DIGITAL INDICATING CONTROLLER

FCS-23A
INSTRUCTION MANUALPreface
Thank you for purchasing our Digital indicating controller FCS-23A.
This manual contains instructions for the mounting, functions, operations and notes when
operating the FCS-23A.
To ensure safe and correct use, thoroughly read and understand this manual before using thiscontroller. To prevent accidents arising from the misuse of this controller, please ensure theoperator receives this manual.

Abbreviations used in this manual
Symbol
PV
SV
MV
OUT
AT

Term
Process variable
Desired value
Output manipulated variable
Control output
Auto-tuning

Characters used in this manual
Indication
Number,

/

-1

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Indication
Alphabet
Indication
Alphabet

2

Notes• This instrument should be used in accordance with the specifications described in the manual.
If it is not used according to the specifications, it may malfunction or cause a fire.
• Be sure to follow the warnings, cautions and notices. If they are not observed, serious injury or
malfunction may occur.
• Specifications of the FCS-23A and the contents of this instruction manual are subject to change
without notice.
• Care has been taken to assure that the contents of this instruction manual are correct, but if
there are any doubts, mistakes or questions, please inform our sales department.
• This instrument is designed to be installed through a control panel. If it is not, measures must be
taken to ensure that the operator cannot touch power terminals or other high voltage sections.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos CO., LTD. is not liable for any damage or secondary damage(s) incurred as aresult of using this product, including any indirect damage.

SAFETY PRECAUTIONS (Be sure to read these precautions before using our products.)
The safety precautions are classified into categories: “Warning” and “Caution”.
Depending on the circumstances, procedures indicated by
Caution may cause serious
results, so be sure to follow the directions for usage.

Warning

Procedures which may lead to dangerous conditions and cause
death or serious injury, if not carried out properly.

CautionProcedures which may lead to dangerous conditions and cause
superficial to medium injury or physical damage or may degrade
or damage the product, if not carried out properly.

Warning• To prevent an electric shock or fire, only Shinko or other qualified service personnel may
handle the inner assembly.
• To prevent an electric shock, fire or damage to the instrument, parts replacement may only
be undertaken by Shinko or other qualified service personnel.

SAFETY PRECAUTIONS• To ensure safe and correct use, thoroughly read and understand this manual before using
this instrument.
• This instrument is intended to be used for industrial machinery, machine tools and measuring
equipment. Verify correct usage after purpose-of-use consultation with our agency or main office.
(Never use this instrument for medical purposes with which human lives are involved.)• External protection devices such as protective equipment against excessive temperature rise,etc. must be installed, as malfunction of this product could result in serious damage to thesystem or injury to personnel. Also proper periodic maintenance is required.
• This instrument must be used under the conditions and environment described in this manual.
Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life or damage occurring
due to the instrument being used under conditions not otherwise stated in this manual.
Caution with respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the
manufacture of weapons of mass destruction (i.e. military applications, military equipment,etc.), please investigate the end users and the final use of this instrument.
In the case of resale, ensure that this instrument is not illegally exported.
3

1. Installation Precautions

CautionThis instrument is intended to be used under the following environmental
conditions (IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )that does not change rapidly, and no icing• An ambient non-condensing humidity of 35 to 85%RH• No large capacity electromagnetic switches or cables through which large current isflowing• No water, oil or chemicals or where the vapors of these substances can come into
direct contact with the unit
• Take note that ambient temperature of this unit - not the ambient temperature of thecontrol panel - must not exceed 50 (122 ) if mounted through the face of a control
panel. Otherwise the life of electronic components (especially electrolytic capacitor)
may be shortened.
Note: Avoid setting this instrument directly on or near flammable material eventhough the case of this instrument is made of flame-resistant resin.

2. Wiring Precautions

Caution• Do not leave wire remnants in the instrument, as they could cause a fire and/or malfunction.
• Use the solderless terminal with an insulation sleeve in which an M3 screw fits whenwiring the FCS-23A.
• The terminal block of this instrument is designed to be wired from the left side.
The lead wire must be inserted from the left side of the terminal, and fastened with theterminal screw.
• Tighten the terminal screw within the specified torque. If excessive force is applied tothe screw when tightening, the screw or case may be damaged.
• Do not apply a commercial power source to the sensor connected to the input terminal
nor allow the power source to come into contact with the sensor, as the input circuit
may be burnt out.
• This controller has no built-in power switch, circuit breaker or fuse. It is necessary to
install them near the controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)• For a 24V AC/DC power source, do not confuse polarity when using direct current (DC).

3. Operation and Maintenance Precautions

Caution• It is recommended that AT (auto-tuning) be performed during the trial run.
• Do not touch live terminals. This may cause electric shock or problems in operation.
• Turn the power supply to the instrument OFF when retightening the terminal andcleaning. Working on or touching the terminal with the power switched ON may result
in severe injury or death due to electric shock.
• Use a soft, dry cloth when cleaning the instrument.
(Alcohol based substances may tarnish or deface the unit.)• As the display section is vulnerable, do not strike or scratch it with a hard object orpress hard on it.
4Caution• Setup by the DIP switch and Rotary switch inside of the controller is required
before the power is turned on.
• Default values of the FCS-23A:
Sensor input: K
Control action: Fuzzy self-tuning PID, Heating control action
Alarm 1 (A1): No alarm action, No standby action
Unit / :Program start Auto/Manual: Manual start
Refer to Chapter “3. Setup” (page 8).

5

---

CONTENTS ---1. ModelPage
1.1 Model ---------------------------------------------------------------------------------------- 7
1.2 How to Read the Model Label --------------------------------------------------------- 7
2. Name and Functions of Sections ------------------------------------------------ 8

3. Setup
3.1 Removing the Internal Assembly ----------------------------------------------------- 9
3.2 Switch Setting (Multi-function) -------------------------------------------------------- 9
3.3 Insertion of the Internal Assembly --------------------------------------------------- 12

4. Mounting to the Control Panel
4.1 Site Selection ---------------------------------------------------------------------------- 13
4.2 External Dimensions (Scale: mm) -------------------------------------------------- 13
4.3 Panel Cutout (Scale: mm) ------------------------------------------------------------ 13
4.4 Mounting ---------------------------------------------------------------------------------- 14
5. Wiring ----------------------------------------------------------------------------------------- 15
5.1 Terminal Arrangement ----------------------------------------------------------------- 16
5.2 Wiring Examples ------------------------------------------------------------------------ 17

6. Settings
6.1 Operation Flowchart -------------------------------------------------------------------- 18
6.2 Settings
6.2.1 Main Setting Mode ------------------------------------------------------------------ 20
6.2.2 Sub Setting Mode ------------------------------------------------------------------- 21
6.2.3 Auxiliary Function Setting Mode 1 ----------------------------------------------- 24
6.2.4 Auxiliary Function Setting Mode 2 ----------------------------------------------- 26
6.2.5 Program Mode ----------------------------------------------------------------------- 28
6.2.6 Control Output OFF Function ---------------------------------------------------- 30
6.2.7 MV, Remaining Step Time Indication ------------------------------------------- 30
7. Set Value Memory Function (SM Option) -------------------------------------- 31

8. Operation
8.1 When Using the FCS-23A as a Temperature Controller ---------------------- 32
8.2 When Using the FCS-23A as a Simplified Programmable Controller ----- 33

9. Action Explanations
9.1 Standard Control Action --------------------------------------------------------------- 34
9.2 ON/OFF Control Action ---------------------------------------------------------------- 35
9.3 Pattern End Action ---------------------------------------------------------------------- 35
9.4 Alarm 1 (A1), Alarm 2 (A2) Action --------------------------------------------------- 36

10. Control Actions
10.1 Fuzzy Self-tuning ---------------------------------------------------------------------- 38
10.2 PID ---------------------------------------------------------------------------------------- 38
10.3 AT of This Controller ------------------------------------------------------------------ 39

11. Specifications
11.1 Standard Specifications -------------------------------------------------------------- 40
11.2 Optional Specifications --------------------------------------------------------------- 43
12. Troubleshooting ----------------------------------------------------------------------- 45
13. Character Table ------------------------------------------------------------------------ 47
6

1. Model
1.1 Model
Alphanumeric characters underlined represent the control output (OUT), input or options.
[Example]

FCS-23A - R / M,

A2
Alarm 2 (A2) output
Multi-range input
Relay contact output

Standard specifications
FCS–2
Control action
Alarm (A)Control output
(OUT)
Input

3 A3
A

/

R
S
A
M

PID control *1
Alarm types are selectable. *2
Relay contact
Non-contact voltage (for SSR drive)
Direct current
Multi-range *3*1: PID, Fuzzy self-tuning PID, PD, ON/OFF control can be selected by internal DIP switch.
*2: 12 types of alarm plus No alarm action can be selected by internal DIP and Rotaryswitches.
*3: An input type can be selected by DIP and Rotary switches from thermocouple (10types) and RTD (3 types).
Optional specifications
Code
Name
A2
Alarm 2 (A2) output (including Pattern end 2 output)
C5
RS-485
Serial communicationC
RS-232CSM
Set value memory number external selection
LA
Loop break alarm output
BL
Screw type mounting brackets
BK
Color: BlackIP
Drip-proof/Dust-proofTC
Terminal cover(For detailed options, see Section “11.2 Optional specifications”.)
1.2 How to Read the Model Label
The model labels are attached to the case and the inner assembly.

(1)
(2)
(3)

Model label
FCS-23A-R/M
A2
LA
No.

(e.g.)
Relay contact output, Multi-range input
Alarm 2 (A2) output
Loop break alarm output(1) Model, (2) Options, (3) Serial number7

2. Name and Functions of Sections
(1)

(3)
(4)

(2)

(5)
(6)

(Fig. 2-1)
Displays and indicators(1) PV display (Red)
Indicates the PV or setting characters in the setting mode.
(2) SV display (Green)
Indicates the SV, MV, Time or set values in each setting mode.
(3) OUT indicator (Green)
Lights when OUT (control output) is ON.
(For Direct current output type, flashes corresponding to the MV in 125ms cycles.)(4) A1 indicator (including Pattern end 1 output) (Red)Lights when the Alarm 1 (A1) output or Pattern end 1 output is ON.
(5) A2 indicator (including Pattern end 2 output) (Red) (Option)
Lights when the Alarm 2 (A2) output or Pattern end 2 output is ON.
(6) AT indicator (Yellow)
Flashes during AT (auto-tuning).
Keys
Increase Key: Increases the numeric value on the SV display during setting mode.
Decrease Key: Decreases the numeric value on the SV display during setting mode.
Mode Key:
Switches a setting mode and registers set values.
To register each set (or selected) value, press this key.
OUT/OFF Key: Performs the control output ON/OFF or Program control Start/Stop.
In any mode, if the
key is pressed for approx. 1 second,
the Control output OFF function will work.
To release the function, press the key for 1 second.

8

3. Setup
3.1 Removing the Internal Assembly
Before the power supply to this instrument is turned on, draw the internal assembly out
from the case in the direction indicated by the arrow by pushing the latch (bottom of the
instrument) while holding the instrument by the top and bottom.

Draw out the FCS-23A toward you
by pushing the latch.

Latch(Fig. 3.1-1)

3.2 Switch Setting (Multi-function)
Using a small flat blade screwdriver or tweezers, set the following with the DIP and
Rotary switches.
Sensor input, Alarm 1 (A1) type, Alarm 2 (A2) type, Control action,
Heating (reverse)/Cooling (direct) action, Alarm 1 (A1) standby and Alarm 2 (A2)standby actions, Unit / , Program start Auto/Manual
Rotary switch (SW301) will be equipped only when the A2 option is ordered.
Control action

Alarm 2 typeHeating/Cooling action

Alarm 1 type

Alarm 1 standby action

Sensor input

Alarm 2 standby action/
Sensor input
Program start Auto/Manual

Rotary switch

DIP switch(Fig. 3.2-1)
9

The following items can be selected by the DIP switch (SW304).
Default value: All switches OFF(Table 3.2-1)
Item

DIP
SW304
No.

Control action

1
and
2

Heating/Cooling
actionAlarm 1 (A1)standby action
Alarm 2 (A2)standby action
(*1)
/

3
4
5

Selection
Fuzzy self-tuning PID control
PID control
PD control
ON/OFF control
Heating (reverse) action
Cooling (direct) action
No standby action
Standby action
No standby action

No.1: OFF
No.1: ON
No.1: OFF
No.1: ON
No.3: OFF
No.3: ON
No.4: OFF
No.4: ON
No.5: OFF

Standby action

No.5: ON

7

Program startAuto/Manual(*3)

8

No.2: OFF
No.2: OFF
No.2: ON
No.2: ON

No.6: OFF
No.6: ON

6

Sensor input(*2)

Switch status

K, J, R, B, N, PL- ,Pt100, JPt100 (With decimal point)
S, E, T, C,
Pt100 (Without decimal point)
Manual start

No.8: OFF

Automatic start

No.8: ON

No.7: OFF
No.7: ON(*1) The standby function will work only when the A2 option is ordered.
(*2) Use the Rotary switch (SW303) and DIP switch (SW304) together for sensor input
selection.
(*3) Program start Auto/Manual: For Program control
Manual start:
The preset program starts by pressing the
key.
Automatic start: The preset program automatically starts from Step 1 after 2 seconds
of warm-up status after power-on.

10

Select a sensor type using the Rotary switch (SW303) and DIP switch (SW304).
Default value: K -200 to 1370
Note: If the input type is changed, Scaling high/low limit will become thealtered input range high/low limit value.
(Table 3.2-2)
Rotary
DIP
SW303
SW304
No.
No. 7
0
OFF

Sensor type
K

Range (DIP SW304 No.6)
OFF

ON-200 to 1370

-320 to 2500

1
2
3
4
5
6
7

OFF
OFF
OFF
OFF
OFF
OFF
OFF

J
R
B
PLN
Pt100
JPt100-200 to 1000
0 to 1760
0 to 1820
0 to 1390
0 to 1300-199.9 to 850.0-199.9 to 500.0-320 to 1800
0 to 3200
0 to 3300
0 to 2500
0 to 2300-199.9 to 999.9-199.9 to 900.0

0
1
2
3
7

ON
ON
ON
ON
ON

S
E
T
C (W/Re5-26)
Pt100

0 to 1760
0 to 1000-199.9 to 400.0
0 to 2315-200 to 850

0 to 3200
0 to 1800-199.9 to 750.0
0 to 4200-320 to 1560

If DIP switch (SW304) No.7 is set to “ON”, do not set Rotary switch (SW303)
No. 4, 5 and 6.

The alarm type and the pattern end output for Program control can be selected by
the Rotary switches (SW302) and (SW301).
Rotary switch (SW301) will be equipped only when A2 option is ordered.
Rotary SW302: Alarm 1 (A1) type, Pattern end 1 output
Rotary SW301: Alarm 2 (A2) type, Pattern end 2 output
Note: If an alarm type is changed, the alarm set value becomes 0 (0.0).
Default value: No alarm action(Table 3.2-3)
Alarm 1 (A1) typeNo alarm action
High limit alarm
Low limit alarm
High/Low limits alarm
High/Low limit range alarm
Process high alarm
Process low alarm
Pattern end 1 output

Rotary
SW302
No.
0
1
2
3
4
5
6
7
11

Alarm 2 (A2) typeNo alarm action
High limit alarm
Low limit alarm
High/Low limits alarm
High/Low limit range alarm
Process high alarm
Process low alarm
Pattern end 2 output

Rotary
SW301
No.
0
1
2
3
4
5
6
7

3.3 Insertion of the Internal Assembly
After the setup is completed, insert the internal assembly into the case.
Firmly insert the assembly until it is locked by the latch at the bottom of the instrument.
(There will be a clicking sound.)Caution
Do not confuse the top and bottom of the internal assembly.
If inserting the assembly into the case by force in the wrong direction, the PCB may
be damaged.

12

4. Mounting to the Control Panel

4.1 Site Selection
This instrument is intended to be used under the following conditions(IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:(1) A minimum of dust, and an absence of corrosive gases(2) No flammable, explosive gases(3) No mechanical vibrations or shocks(4) No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )that does not change rapidly, and no icing(5) An ambient non-condensing humidity of 35 to 85%RH(6) No large capacity electromagnetic switches or cables through which large current flows(7) No water, oil or chemicals or where the vapors of these substances can come into
direct contact with the unit
(8) Take note that ambient temperature of this unit - not the ambient temperature of thecontrol panel - must not exceed 50 (122 ) if mounted through the face of a control
panel. Otherwise the life of electronic components (especially electrolytic capacitor)
may be shortened.

44.5

4.2 External Dimensions (Scale: mm)
One-touch type mounting brackets

10

48

100

(Fig. 4.2-1)

44.5
59.7

Screw type mounting brackets

48

10

100

(Fig. 4.2-2)

75

45+0.50

4.3 Panel Cutout (Scale: mm)

+0.5
45 0

+0.5
n x 48-3 0
Lateral close mounting
n: Number of units mounted

+0.5
45 0
13

(Fig. 4.3-1)

4.4 Mounting

CautionAs the case is made of resin, do not use excessive force while screwing in themounting bracket.
The torque should be 0.12N•m.

• When using the One-touch type mounting bracket
Mounting panel thickness: 1 to 3mm.
Mount one-touch mounting brackets 1
to the instrument first, then insert the
FCS-23A 2 from the front of thepanel.
If Soft front cover (FC-48-S) is used,
the mounting panel thickness will be
1 to 2.5mm.

12

1(Fig. 4.4-1)• When using the Screw type mounting bracket (Option code: BL)
Mounting panel thickness: 1 to 8mm
If Soft front cover (FC-48-S) is used, mounting panel thickness will be 1 to 7.5mm.
Insert the FCS-23A from the front of the panel.
Attach the mounting brackets to the slots at the top and bottom of the case,and secure the controller in place with the screws provided.

(Fig. 4.4-2)
14

5. Wiring
Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result insevere injury or death due to electric shock.
Moreover, the instrument must be grounded before the power supply to the
instrument is turned on.

Caution• The terminal block of this instrument is designed to be wired from the left side.
The lead wire must be inserted from the left side of the terminal, and fastened by theterminal screw.
• Use a thermocouple and compensating lead wire according to the sensor input
specifications of this controller.
• Use a 3-wire RTD system according to the sensor input specifications of this controller.
• This controller does not have a built-in power switch, circuit breaker or fuse.
Therefore, it is necessary to install them in a circuit externally, near the controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)• For a 24V AC/DC power source, do not confuse polarity when using direct current (DC).
• When using a relay contact output type, externally use a relay according to thecapacity of the load to protect the built-in relay contact.
• When wiring, keep the input wires (thermocouple, RTD, etc.) away from AC sources
or load wires.
• Use a thick wire (1.25 to 2.0mm2) for grounding.
Lead wire solderless terminal
Use a solderless terminal with an insulation sleeve in which an M3 screw fits as shown
below.
The torque should be 0.63N•m.
Solderlessterminal
Y typeRing type

Manufacturer

Model

Nichifu Terminal Industries CO.,LTD.
Japan Solderless Terminal MFG CO.,LTD.
Nichifu Terminal Industries CO.,LTD.
Japan Solderless Terminal MFG CO.,LTD.

TMEV1.25Y-3
VD1.25-B3A
TMEV1.25-3
V1.25-3

3.2mm

5.8mm or less

5.8mm or less

3.2mm

(Fig. 5-1)

15

Torque0.63N•m

5.1 Terminal Arrangement

24V DC

1

6

2

7

1
100 to 240V AC
or 24V AC

6

SM

2

7

3

8

4

9

5

10

A1/P.end 1
A2/P.end 2/LA

RS-232

C, C5

TX (Wire color: Yellow)
RX (Wire color: Blue)
COM (Wire color: Black)[Control output]
Non-contact voltage
output or
Direct current output[Control output]
Relay contact output
A
B

8
RTD

TC

B
10

RS-485
YA ( ) (Wire color: Yellow)
YB ( ) (Wire color: Blue)
COM (Wire color: Black)
YA ( ) (Wire color: Yellow)
YB ( ) (Wire color: Blue)
COM (Wire color: Black)(Fig. 5.1-1)
A1:
Alarm 1 output
A2:
Alarm 2 output
P. end 1: Pattern end 1 output
P. end 2: Pattern end 2 output
LA:
Loop break alarm output
SM:
Set value memory number external selection
C, C5:
Serial communication• Dotted lines show options, and no terminal is equipped unless specified.
• If Alarm 2 (A2 option) and Loop break alarm (LA option) are ordered together,
they utilize common output terminals.
• Serial communication C/C5 option cannot be ordered in combination with theA2, LA or SM option.
For Alarm 2, even if Alarm 2 (Pattern end 2) is ordered, there is no output.
However, setting items, communication commands and the indicator are stillavailable.

165.2 Wiring Examples
3-phase[FCS-23A-R/M]
100 to 240V AC
24V AC/DCPower supply
for Alarm unit*

Electromagnetic

switchAlarm unit (fortemperature alarm)
Heater

Thermocouple
Electric furnace(Fig. 5.2-1)* To prevent the unit from harmful effects of unexpected level noise, it is recommended
that a surge absorber be installed between the electromagnetic switch coils.

[FCS-23A-S/M]
Single phase

24V

SSR

Thermocouple

Alarm unit (fortemperature alarm)

HeaterElectric furnace(Fig. 5.2-2)• For a 24V AC/DC power source, do not confuse polarity when using direct current (DC).

17

6. Settings
6.1 Operation Flowchart
Power ON
(*1)

(*1)

(1 sec)Control output OFF function

PV/SV display mode(*1)
(1 sec)(3 sec)Standby mode (Program control)

MV indication

Remaining step time indication (*2)+[Main setting mode]
[
] SV

+

[Sub setting mode](3 sec)[] Set value memory number[Auxiliary function setting mode 1][] Set value lock[] AT Perform/Cancel (*3)[

] SV high limit[] Proportional band[

] SV low limit[] Integral time[

] Sensor correction[] Derivative time[

] Instrument number[] Proportional cycle[] Communication speed[] Manual reset[] Communication protocol[] Alarm 1 (A1) value[] Alarm 2 (A2) value[] Loop break alarm time[

] Loop break alarm span18

: Setting items with dotted lines are optional, and they appear only when the options are ordered.

: This means that if theis pressed, the unit proceeds to the next setting item.
+: Press the
key while holding down thekey.
+(3 sec): Press the
key for approx. 3 sec while holding down thekey.
++(3 sec): Press thefor approx. 3 sec while holding down the,.
+(3 sec): Press thefor 3 sec while holding down thekey.
If theis pressed for 3 sec, the unit reverts to the PV/SV display mode from any mode.
(*1) Warm-up status lasts 2 sec after power-on, then starts from previous controller status (last shutdown).
(*2) Remaining step time is indicated only during Program control.
(*3) If AT is performed, the unit reverts to the PV/SV display mode.
If AT is cancelled, the unit proceeds to the [Proportional band].
(*4) Selectin this mode, and press the. The unit reverts to the PV/SV display mode.

++(3 sec)[Auxiliary function setting mode2][] Scaling high limit[] Scaling low limit[] PV filter time constant[] OUT high limit

[

[
[

+

(3 sec)[] Indication whencontrol output OFF[Program mode][]Fixed value control/
Program control(*4)[] SV rise rate[

] Step 1 time[

] SV fall rate[

] Step 2 time[

] Step 3 time[

] Step 4 time[

] Step 5 time[

] Step 6 time[

] Step 7 time

] OUT low limit] OUT ON/OFF hysteresis] A1 action
Energized/De-energized] A2 action
Energized/De-energized[] A1 hysteresis[] A2 hysteresis[] A1 action delay time[

] A2 action delay time19

6.2 Settings
The PV display indicates the Sensor characters selected in [Sensor input], and the SV
display indicates input range high limit or Scaling high limit value for approx. 2 seconds(warm-up status) after power-on. See (Table 6.2-1).
During this time, all outputs and LED indicators are in OFF status.
Control will then start, indicating PV on the PV display and SV on the SV display.
While control output OFF function is working, the PV display indicates the item selected in[Indication when control output OFF].
(Table 6.2-1)
Input

PV display

SV display

PV display

SV display

K
J
R
B
PLN
S
E
T
C(W/Re5-26)
Pt100
JPt100
Pt100
Notes before key operation• Pressing the
key for approx. 1 second from any mode enables the control output
OFF function.
Once the control output OFF function is enabled, the function cannot be released even if
the power to the instrument is turned OFF and ON again.
To cancel the function, press the
key again for approx. 1 second.
• If theis pressed for 3 sec, the unit reverts to the PV/SV display mode from any mode.
6.2.1 Main Setting ModeIn the PV/SV display mode, if the
key is pressed, the unit proceeds to the Main
setting mode.
The SV can be increased or decreased using theor
key.
If thekey is pressed, the SV will be registered, and the controller will revert to the
PV/SV display mode.
Character

Name, Function, Setting range
SV• Sets SV (desired value).
• Setting range: SV low limit to SV high limit

20

Default value06.2.2 Sub Setting ModeIn the PV/SV display mode, if the
key is pressed while holding down thekey, the unit moves to the Sub setting mode.
The set value can be increased or decreased using theor
key.
Pressing the
key registers the set value, and proceeds to the next setting item.
Pressing the
key at the last setting item registers the set value, and the unit
reverts to the PV/SV display mode.
Character
Name, Function, Setting range
Default value
Set value memory number
1• Selects the number (file) to be set or to be retrieved.
• Selection range: 1 to 7
AT Perform/Cancel
AT Cancel• Sets AT (Auto-tuning) Perform or Cancel.
If thekey is pressed after selecting AT Perform, the unit reverts to
the PV/SV display mode.
• Not available if ON/OFF or PD control is selected in [Control action].
AT (Auto-tuning):• If the AT Perform is selected, the AT indicator flashes and the controller
reverts to the PV/SV display mode.
• After AT is finished, the AT indicator is turned off, and P, I and D values
are automatically set.
• During AT, none of the settings can be performed.
• If the AT is cancelled while processing, P, I, D values revert to theprevious values at which AT was performed.
• If thekey is pressed during AT, control output OFF function is
activated, and pressing the
key again cancels the AT.
• AT will be forced to stop if it has not been completed within 4 hours.
• Selection item:: AT Cancel: AT Perform
Proportional band
2.5%
• Sets the proportional band.
• Not available if ON/OFF control is selected in [Control action].
• Setting range: 0.1 to 999.9%
Integral time
200 sec• Sets the integral time.
Setting the value to 0 disables the function (PD control).
• Not available if ON/OFF control or PD control is selected in [Control
action].
• Setting range: 0 to 3600 seconds
Derivative time
50 sec• Sets the derivative time.
Setting the value to 0 disables the function (PI control).
• Not available if ON/OFF control is selected in [Control action].
• Setting range: 0 to 3600 seconds

21

Character

Name, Function, Setting range
Default value
Proportional cycle
R/M: 30 sec• Sets the proportional cycle.
S/M: 3 sec• Not available for Direct current output type or if ON/OFF control isselected in [Control action].
• For the relay contact output type, if the proportional cycle time isdecreased, the frequency of the relay action increases, and the lifeof the relay contact is shortened.
• Setting range: 1 to 120 seconds
0.0
Manual reset• Sets the reset value to correct the offset (deviation between SV and PV
in equilibrium status).
• Available only when PD control is selected in [Control action].
• Setting range: Proportional band converted value[However, in the range of –199.9 to 999.9 ( )]How to set manual reset:
When SV>PV, set the positive (+) value (SV–PV).
When SV<PV, set the negative (–) value (SV–PV).
0
A1 value• Sets the action point of Alarm 1 (A1) output.
• Setting the value to 0 or 0.0 disables the function (except Process
high and Process low alarm).
• Not available if the Rotary switch is set to No.0 or No.7
• Setting range: Refer to (Table 6.2.2-1).
0
A2 value• Sets the action point of Alarm 2 (A2) output.
• Setting the value to 0 or 0.0 disables the function (except Process
high and Process low alarm).
• Not available if A2 output (option) is not ordered or if Rotary switch is set
to No.0 or No.7 in [A2 type] even if it is ordered.
• Setting range: Refer to (Table 6.2.2-1).
0 minutes
Loop break alarm time
• Sets the time to assess the Loop break alarm.
• Available only when Loop break alarm (LA option) is ordered.
• Setting range: 0 to 200 minutes
Loop break alarm span0
• Sets the span to assess the Loop break alarm.
• Available only when Loop break alarm (LA option) is ordered.
• Setting range:
Thermocouple, RTD without decimal point: 0 to 150
Thermocouple, RTD with decimal point: 0.0 to 150.022[A1, A2 setting range]
Alarms with the standby function have the same setting range.
(Table 6.2.2-1)
Alarm typeHigh limit alarm
Low limit alarm
High/Low limits alarm
High/Low limit range alarm
Process high alarm
Process low alarm

Setting range–Input span to Input span ( )–Input span to Input span ( )0 to Input span ( )0 to Input span ( )Input range low limit to Input range high limit
Input range low limit to Input range high limit

*1
*1
*1
*1
*2
*2

• For RTD input, the negative low limit value is –199.9.
[Loop break alarm]
The alarm will be activated when the PV does not rise as much as the span or more
within the time it takes to assess the loop break alarm after the MV has reached 100%or the output high limit value.
The alarm will also be activated when the PV does not fall as much value as the spanor more within the time it takes to assess loop break alarm after the MV has reached
0% or the output low limit value.
When the control action is Direct (Cooling), read “fall” for “rise” and vice versa.

23

6.2.3 Auxiliary Function Setting Mode 1
In the PV/SV display mode, if the
key is pressed for approx. 3 seconds while
holding down thekey, the unit proceeds to Auxiliary function setting mode 1.
The set value can be increased or decreased by pressing theor
key.
Pressing the
key registers the set value and proceeds to the next setting item.
Pressing the
key at the last setting item registers the set value, and the unit
reverts to the PV/SV display mode.
Character
Name, Function, Setting range
Default value
Set value lock
Unlock• Locks the set values to prevent setting errors.
The setting item to be locked differs depending on the selection.
• When selecting Lock, set the necessary items in the status Unlock,then select Lock 1, Lock 2 or Lock 3.
• Fuzzy self-tuning or AT will not function if [] or [] isselected.
• Be sure to select Lock 3 when changing the set value frequently via
communication function considering the life of non-volatile memory.
• Selection item:(Unlock): All set values can be changed.
(Lock 1): None of the set values can be changed.
(Lock 2): Only SV can be changed.
(Lock 3): All set values can be changed temporarily. However,changed values revert to their previous value after
power-off because they are not saved in the
non-volatile memory.
Since this function has no relation to the memory life,
it is well suited when used together with Shinkoprogrammable controllers (with SVTC option).
[About Lock 3]
When using the FCS-23A as a Fixed value controller
The data in the selected Set value memory number can be temporarilychanged.
However, if the memory number is changed, the data in the previous
memory number is cancelled, and returns to the previous values.
When using the FCS-23A as a Programmable controller
The data in the currently performing step number can be temporarilychanged. However, if the step number is changed, the data cancelled,
and returns to the previous values.
During program standby status, the data changes will be invalidated.

24

Character

Name, Function, Setting range
SV high limit

Default value
400• Sets the SV high limit within the Scaling low limit value/Scaling high limit
value range.
• Setting range: SV low limit to Scaling high limit value
SV low limit0• Sets the SV low limit within the Scaling low limit value/Scaling high limit
value range.
• Setting range: Scaling low limit value to SV high limit
Sensor correction
0.0• Sets the sensor correction value.
• Setting range: –100.0 to 100.0 ( )[Sensor correction function]
This corrects the input value from the sensor. When a sensor cannot be
set at the exact location where control is desired, temperatures
measured by the sensor may deviate from the temperature in thecontrolled location. When controlling with plural controllers, sometimes
the measured temperatures (input value) do not concur due todifferences in sensor accuracy or dispersion of load capacities.
In such a case, the control can be set at the desired temperature byadjusting the input value of sensors. However, it is effective within the
input rated range regardless of the sensor correction value.
PV after sensor correction= Current PV+ (Sensor correction value)
Instrument number0• Sets the instrument number of this unit. (The instrument numbers should
be set one by one when multiple instruments are connected in Serial
communication, otherwise communication is impossible.)• Available only when the Serial communication (C, C5 option) is ordered.
• Setting range: 0 to 95
Communication speed
9600bps• Selects the communication speed of this instrument.
(The communication speed of this instrument must be equal to that of
the host computer, otherwise communication is impossible.)• Available only when the Serial communication (C, C5 option) is ordered.
• Selection item:: 2400bps: 4800bps: 9600bps: 19200bps
ShinkoCommunication protocol
protocol• Selects the communication protocol of this instrument.
• Available only when the Serial communication (C, C5 option) is ordered.
• Selection item:: Shinko protocol: Modbus ASCII mode

25

6.2.4 Auxiliary Function Setting Mode 2
In the PV/SV display mode, if the
key is pressed for approx. 3 seconds while
holding down theandkeys, the unit proceeds to Auxiliary function setting
mode 2.
The set value can be increased or decreased using theor
key.
Pressing the
key registers the set value, and proceeds to the next setting item.
Pressing the
key at the last setting item registers the set value, and the unit
reverts to the PV/SV display mode.
Character

Name, Function, Setting range
Default value
1370
Scaling high limit value• Sets scaling high limit value.
If scaling high limit value is changed, SV high limit automaticallychanges to the scaling high limit value.
• Setting range: Scaling low limit to Input range high limit value
Scaling low limit value–200• Sets scaling low limit value.
If scaling low limit value is changed, SV low limit automaticallychanges to the scaling low limit value.
• Setting range: Input range low limit to scaling high limit value
PV filter time constant
0.0 sec• Sets PV filter time constant.
However, if the set value is set too large, it affects control result due
to the delay of response.
• Setting range: 0.0 to 10.0 sec
OUT high limit value
100%• Sets the OUT (control output) high limit value.
• Not available if ON/OFF control is selected in [Control action]• Setting range: OUT low limit value to 100%
(Direct current output: OUT low limit value to 105%)
OUT low limit value0%• Sets the OUT (control output) low limit value.
• Not available if ON/OFF control is selected in [Control action]• Setting range: 0% to OUT high limit value(Direct current output: –5% to OUT high limit value)
OUT ON/OFF hysteresis
1.0• Sets OUT (control output) ON/OFF hysteresis.
• Available only when ON/OFF control is selected in [Control action]• Setting range: 0.1 to 100.0 ( )26Character

Name, Function, Setting range
Default value
A1 action Energized/De-energized
Energized• Selects A1 action Energized/De-energized.
• Not available if Rotary switch is set to No.0 or No.7 in [A1 type]• Selection item:: Energized,: De-energizedA2 action Energized/De-energized
Energized• Selects A2 action Energized/De-energized.
• Not available if A2 option is not ordered or if Rotary switch is set to No.0
or No.7 in [A2 type].
• Selection item:: Energized,: De-energizedA1 hysteresis
1.0• Sets A1 hysteresis.
• Not available if the Rotary switch is set to No.0 or No.7 in [A1 type]• Setting range: 0.1 to 100.0
A2 hysteresis
1.0• Sets A2 hysteresis.
• Not available if A2 option is not ordered, or if the Rotary switch is set toNo.0 or No.7 in [A2 type] even if the A2 option is ordered.
• Setting range: 0.1 to 100.0
A1 action delay time
0 sec
• Sets A1 action delay time.
When setting time has elapsed after the input enters the alarm output
range, the alarm is activated.
• Not available if the Rotary switch is set to No.0 or No.7 in [A1 type].
• Setting range: 0 to 9999 seconds
A2 action delay time
0 sec
• Sets A2 action delay time.
When setting time has elapsed after the input enters the alarm output
range, the alarm is activated.
• Not available if A2 option is not ordered or if the Rotary switch is set toNo.0 or No.7 in [A2 type] even if A2 option is ordered.
• Setting range: 0 to 9999 seconds
OFF isIndication when control output OFF
indicated• Selects the indication when the control output is off.
on the PV• Selection item:
display.
: OFF is indicated on the PV display.
: No indication (all unlit): Only PV is indicated.

27

Character

Name, Function, Setting range
SV rise rate
• Sets the SV rise rate (Rising value per minute).
Setting the value to 0 or 0.0 disables the function.
• Setting range: 0 to 9999 /min.
With a decimal point: 0.0 to 999.9 /min.
SV fall rate

Default value
0 /minute0 /minute• Sets the SV fall rate (Falling value per minute).
Setting the value to 0 or 0.0 disables the function.
• Setting range: 0 to 9999 /min.
With a decimal point: 0.0 to 999.9 /min.
Alarm 1 (A1), 2 (A2) Energized/De-energized function[If the alarm action Energized is selected]
When the alarm output indicator is lit, the alarm output (terminals 7-8, 9-10) is
conducted (ON). When the alarm output indicator is unlit, the alarm output is notconducted (OFF).
[If the alarm action De-energized is selected]
When the alarm output indicator is lit, the alarm output (terminals 7-8, 9-10) is notconducted (OFF). When the alarm output indicator is unlit, the alarm output isconducted (ON).
High limit alarm (when Energized is set) High limit alarm (when De-energized is set)
A1 hysteresis

A1 hysteresis
ON

ON
OFF

OFF
SV

A1: Alarm 1+ A1 valueSV+ A1 value

For Alarm 2(A2), read “A2” for “A1”.
(Fig. 6.2.4-1)

6.2.5 Program Mode
In PV/SV display mode, if the
key is pressed for approximately 3 seconds while
holding down thekey, the units moves to the Program mode.
Theor
key increases or decreases the set values (numeric value).
Pressing the
key registers the set value, and proceeds to the next setting item.
If thekey is pressed at the last setting item, the set value is registered and the unit
reverts to the PV/SV display mode.
• Data in Set value memory numbers (1 to 7, set in Fixed value control) is assigned to
Steps 1 to 7 respectively.
For example, data in Set value memory number 1 becomes Step 1 data, and data in Set
value memory number 2 becomes Step 2 data, and so on.
• If the Pattern end output is selected and the Program control is performed, the Patternend output is turned on when the program is completed.
• If thekey is pressed while the Pattern end output is on, the Pattern end output will
be turned off. If the
key is pressed again, the program will be performed.
28• The following shows the program pattern example.
Set the step time to 00.00 for the unnecessary steps.
[Program example]
Step number
1
2
3
4
5
6
7
(Set value memory number)
Step SV500
500 1000 1000 200
200100
Proportional band
2.0
1.8
2.0
1.8
2.5
1.8
2.0
Integral time
180
80
180
80
200
80
200
Derivative time
30
20
30
20
50
20
50
A1 value
2
5
2
5
10
0
5
OUT high limit
100
100
100
100
100
100
100
OUT low limit
0
0
0
0
0
0
0
Step time
00:30 01:00 00:40 01:00 02:00 00:30 01:00
1000

500

0
Character

Name, Function, Setting range
Default value
Fixed value control/Program control switching
Fixed value• Fixed value control or Program control can be selected. control• If thekey is pressed after selecting the fixed value control, thecontroller will revert to the PV/SV display mode.
If thekey is pressed after selecting Program control, steptime from Step 1 to Step 7 can be set.
• Selection item:: Fixed value control: Program control
Step 1 time
00.00
• Sets Step 1 time. (Available only for Program control)(e.g.) When setting 1 hour 58 minutes, set as [].
• Setting range: 00.00 to 99.59
Step 2 time
00.00
• Sets Step 2 time. (Available only for Program control)• Setting range: 00.00 to 99.59
Step 3 time
00.00
• Sets Step 3 time. (Available only for Program control)• Setting range: 00.00 to 99.59
Step 4 time
00.00
• Sets Step 4 time. (Available only for Program control)• Setting range: 00.00 to 99.59
Step 5 time
00.00
• Sets Step 5 time. (Available only for Program control)• Setting range: 00.00 to 99.59
29

Character

Name, Function, Setting range
Step 6 time

Default value
00.00• Sets Step 6 time. (Available only for Program control)• Setting range: 00.00 to 99.59
Step 7 time
• Sets Step 7 time. (Available only for Program control)• Setting range: 00.00 to 99.59

00.00

6.2.6 Control Output OFF Function
Control output OFF function []• The control action and output of an instrument (or instruments) can be turned off
without turning off their power supplies using this function.
• Pressing the
key for approx. 1 second from any mode enables the control
output OFF function. The PV display indicates the setting item selected in[Indication when control output OFF].
To cancel the function, press the
key again for approx. 1 second.
• Once the control output OFF function is enabled, the function cannot be released
even if the power to the instrument is turned OFF and ON again.
To cancel the function, press the
key again for approx. 1 second.
• During Program control, thekey becomes the Program Start/Stop key, andthe control output OFF function is disabled.

6.2.7 MV, Remaining Step Time Indication
MV indication
In the PV/SV display mode, press the
key for approx. 3 seconds.
Keep pressing the
key until the MV appears, though the SV setting mode
appears while processing.
The MV indicator lights. The SV display indicates MV. The 2nd dot from the righton the SV display flashes.
For the fixed value control, when the
key is pressed again, the unit reverts
to the PV/SV display.
Remaining step time indication
For Program control, if the
key is pressed while in MV indication, remaining
step time will be indicated on the SV display. The TIME indicator lights.
By pressing the
key again, the unit reverts to the PV/SV display mode.

30

7. Set Value Memory Function (SM Option)
If the SM option is ordered, 2 files (8 pieces of data per file) of data can be memorized
by external operation.
Control can be performed by selecting the desired file.
One file contains the following data:
SV, PID, A1 value, A2 value, OUT high limit, OUT low limit
The SM option cannot be ordered in combination with A2, LA or C/C5 option.
Wiring example of Set value memory number external selection

1
2
3

6

3(

)

(Color of wire: Red)

2(NC) 7
1(

)

8

4

9

5

10

3
2

NC
(Color of wire: Blue)

1

Contact input:
Set value memory number 2 can be selected by connecting terminals 1 and 3.

Open collector input:
When selecting Set value memory number 2 by the Open collector, connect No.1 pin
to the collector and No. 3 pin to the emitter.

• If Set value memory number 2 is selected by external operation, it is impossible
to select Set value memory number by front key operation.
• The memory number cannot be changed during setting mode or AT (auto-tuning).

31

8. Operation
After the controller is mounted to the control panel and wiring is completed, operate theunit following the procedures below.
8.1 When Using the FCS-23A as a Temperature Controller(1) Turn the power supply to the FCS-23A ON.
For approx. 2 seconds after power-on, the sensor type and the temperature unit
selected in [Sensor input] will be indicated on the PV display, and input range high limit
value will be indicated on the SV display.
See (Table 8.1-1).
During this time, all outputs and LED indicators are in OFF status.
After that, control starts, indicating PV on the PV display and SV on the SV display.
When the Control output OFF function is working, the item selected in [Indication whencontrol output OFF] mode is indicated on the PV display.
(Table 8.1-1)
Input

PV display

SV display

PV display

SV display

K
J
R
B
PLN
S
E
T
C(W/Re5-26)
Pt100
JPt100Pt100(2) Input each set value.
Refer to Section “6. Settings”.
When controlling by Fuzzy self-tuning PID, select ”Perform” in [AT Perform/Cancel]
to start control in optimal conditions.
(3) Turn the load circuit power ON.
Control starts, so as to reach, and then maintain the control target at the SV.

32

8.2 When Using the FCS-23A as a Simplified Programmable Controller(1) Turn the power supply to the FCS-23A ON.
For approx. 2 seconds after power-on, the sensor type and the temperature unit
selected in [Sensor input] are indicated on the PV display, and input range high limit
value is indicated on the SV display.
See (Table 8.1-1).
During this time, all outputs and LED indicators are in OFF status.
After that, the unit enters the PV/SV display mode.
When the Control output OFF function is working, the setting item selected in[indication when control output OFF] is indicated on the PV display.
(2) Input each set value and step time
Refer to Section “6. Settings”.
The PV display indicates the PV, and the unit enters standby mode.
(3) Turn the load circuit power ON.
(4) Program control start
If “Automatic start” is selected in [Program start Auto/Manual], the unit will switch towarm-up status for approx. 2 seconds after power-on, then Program control
automatically starts from Step 1.
If “Manual start” is selected in [Program start Auto/Manual], the unit will switch towarm-up status for approx. 2 seconds after power-on. The unit proceeds to standby
status. In this status, if the
key is pressed, Program control starts from Step 1.
For Program control start, SV start (0 ) is used.
During Program control (RUN), the Step number (Set value memory number) can bechanged, however it is not effective.
To terminate Program control while processing
Program control will be terminated if the
key is pressed for approx. 1 sec or
longer.
To switch the indication of MV and Remaining step time
In the PV/SV display, if the
key is pressed for approximately 3 seconds, the MV
is indicated. If the
key is pressed again, the remaining step time will be
indicated.
Instrument status when power is restored
After restoration following a power failure during Program control, the FCS-23A
resumes performance from the point at which power was lost.
The PV display flashes until the step at which the power failure occurred is finished.

33

9. Action Explanations
9.1 Standard Control Action
ActionHeating (reverse) action

Cooling (direct) action

Proportional band

Proportional band

ON

Controlaction

ON

OFF

OFF
SV

Relay contact6

Non-contact
voltage+ 6

Direct current

OutputSV+620mA DC

+6

+6

+6

+6

+6

20 to 4mA DC

20mA DC

74mA DC7

4 to 20mA DC

74mA DC
7

6

6

6

6

6

7

7

7

7

7

7

(*1)

(*1)

+ 6

+6

+6

+6

+6

12V DC

12/0V DC

0V DC

0V DC

0/12V DC

12V DC

7

7

7

7

7

7
(*1)

(*1)

7

7
(*2)

(*2)

Indicator[OUT] Green

Unlit

Lit

Unlit

(*1) Cycle action is performed according to deviation.
(*2) Changes continuously according to deviation.
: Turns ON (lit) or OFF (unlit).

34

Lit

9.2 ON/OFF Control Action
ActionHeating (reverse) action

Cooling (direct) action
Hysteresis

Hysteresis
Controlaction

ON

ON

OFF

OFF
SV

Relay contact

6

6

6

7

7

7

7

Non-contact
voltage

Output

6

+ 6

+ 6

+ 6

+ 6

Direct current

SV

+ 6

12V DC
720mA DC

0V DC
7

+ 6

0V DC
7

12V DC7+ 6

74mA DC
7

Lit

Unlit

+ 6

4mA DC
720mA DC
7

Indicator[OUT] Green

Unlit

Lit

: Turns ON or OFF.

9.3 Pattern End Action
Program control end

Pattern end output isreleased by pressing
the
key.

3

3

3

4

4

4

Unlit

Lit

OUT
OFF

ON
OFF
Time

Pattern end output is turned ON when the Program control is completed,
and it is released when the
key is pressed.
Use terminals 3 and 5 for Pattern end 2 output.
The A2 indicator lights when Pattern end 2 output is ON.

35

Unlit

9.4 Alarm 1 (A1), Alarm 2 (A2) Action
High limit alarm

Low limit alarm
A1
hysteresis

ONA1hysteresis
ON

Alarm action
OFF

OFF

-A1 value

Alarm output

SV+A1 value-A1 value

+side

+side

-side

-side

SV

+A1 value

High/Low limit range alarm

High/Low limits alarm
A1
hysteresis

A1
hysteresis
ON

ON

Alarm action
OFF

OFF

SV

A1 valueA1 valueA1 valueSV

A1 value

Alarm output
Process high alarm

Process low alarm
A1
hysteresis

A1
hysteresis
ON

ON

Alarm action
OFF

OFF

A1 valueA1 value
Alarm output
High limit alarm with standby

Low limit alarm with standby
A1hysteresis

A1
hysteresis
ON

ON

Alarm action
OFF

OFF

-A1 value
Alarm output

SV+A1 value-A1 value

+side

+side

-side

-side

36

SV

+A1 value

High/Low limits alarm with standby

High/Low limit range alarm with standby

A1hysteresis

A1
hysteresis
ON

ON

Alarm action
OFF

OFF

A1 valueSV

A1 valueA1 valueSV

A1 value

Alarm output
Process high alarm with standby

Process low alarm with standby
A1hysteresis

A1
hysteresis
ON

ON

Alarm action
OFF

OFF

A1 valueA1 value

Alarm output: A1 output terminals 3 and 4 are closed.
: A1 output terminals 3 and 4 are closed or opened.
: A1 output terminals 3 and 4 are opened.
: Standby functions.

A2 output terminals: 3 and 5
A1 and A2 indicators light when their output terminals are closed,
and go off when their output terminals are opened.
For A2, read “A2” for “A1”.

37

10. Control Actions

10.1 Fuzzy Self-tuning
Fuzzy self-tuning is a function that performs fine adjustment of PID values automatically.
Stable control can be carried out even if the conditions of the production process arechanged due to various external factors (types and rates of production).
(1) When using the controller for the first time, perform the AT (auto-tuning) or set theproper PID values by keypad operation.
(2) When control initiates, the controller performs this function by the previously adjusted
PID values.
(3) When the control result is disordered by disturbance or a change in the process, thecontroller checks the convergence status, and performs a fine adjustment of PID
values if necessary.
The instrument is constantly in self-tuning status, and when deviation occurs, the tuning
starts.
• If the convergence is performed smoothly, the PID values are not changed.
• If the convergent speed is slow, the controller corrects the PID values to accelerate theconvergence.
• When overshoot is generated during the convergence, the controller changes the PID
values to correct this.
• When hunting occurs, the controller checks its waveform and performs a fine adjustment
of PID values.
Even in Fuzzy self-tuning status, when very large hunting occurs and the control is notstabilized, AT automatically starts.
When the AT “Perform” is selected by the keypad, AT initiates, and when the control isstabilized, the AT is released and the controller returns to self-tuning status.
When lock mode [] or [] is selected, Fuzzy self-tuning or AT does not work.

With a control system in which load fluctuation periodically occurs, the Fuzzy
self-tuning PID control may malfunction.
In such a case, use the controller with the PID control.
10.2 PID(1) Proportional band (P)Proportional action is the action which the control output varies in proportion to thedeviation between the SV (desired value) and the processing temperature (PV).
If the proportional band is narrowed, even if the output changes by a slight variation of
the processing temperature, better control results can be obtained as the offset
decreases.
However, if the proportional band is narrowed too much, even slight disturbances may
cause variation in the processing temperature, and control action changes to ON/OFF
control action and the so-called hunting phenomenon occurs. Therefore, when theprocessing temperature comes to the balanced position near the SV and a constanttemperature is maintained, the most suitable value is selected by gradually narrowing the
proportional band while observing the control results.
(2) Integral time (I)Integral action is used to eliminate offset. When the integral time is shortened, thereturning speed to the setting point is accelerated. However, the cycle of oscillation is
also accelerated and control becomes unstable.
(3) Derivative time (D)Derivative action is used to restore the change in the processing temperature according
to the rate-of-change. It reduces the amplitude of overshoot and undershoot width.
If the derivative time is shortened, the restoring value becomes small, and if the derivative
time is extended, an excessive returning phenomenon may occur and the control system
may oscillate.
38

10.3 AT of This Controller
In order to set each value of P, I and D automatically, AT process should be made tofluctuate to obtain an optimal value.
Sometimes the AT process will not fluctuate if AT is performed at or near room
temperature. Therefore AT might not finish normally.
(A) If there is a large difference between the SV and PV as the temperature is rising
The AT process will fluctuate at the temperature 1.5% of input span lower than the SV.
1.5% of input span lower than the SV
SV(4)
TemperatureTime

AT starting point
(1)

(2)

(1) Calculating PID
constant(2) PID constantcalculated(3) Controlled by the
PID constant set
by AT.
(4) 1.5% of input span

(3)

(Fig. 10.3-1)(B) When the control is stable or when PV is within SV 1.5% of input span.
The AT process will fluctuate around the SV.

SV
TemperatureTime

AT starting point
(1)

(2)

(1) Calculating PID
constant(2) PID constantcalculated(3) Controlled by the
PID constant set
by AT.

(3)(Fig. 10.3-2)(C) When the PV is 1.5% of input span higher than the SV
The AT process will fluctuate at the temperature 1.5% of input span higher than the SV.
1.5% of input span higher than the SV
Temperature
(4)
SV

Time

AT starting point
(1)

(2)

(Fig. 10.3-3)
39(3)(1) Calculating PID
constant(2) PID constantcalculated(3) Controlled by the
PID constant set
by AT.
(4) 1.5% of input span

11. Specifications

11.1 Standard Specifications
Mounting:
Flush
Setting:
Input system using membrane sheet key
Display
PV display:
Red LED, 4 digits, character size, 8(H) x 4(W)mm
SV display:
Green LED, 4 digits, character size, 8(H) x 4(W)mm
Accuracy (Indication, setting)
Thermocouple:
Within 0.3% of each input span 1 digit
K, J, T inputs, range less than 0 (32 ):Within 0.5% of each input span 1 digit
R, S inputs, range 0 to 200 (0 to 400 ): Within 6 (12 )B input, range 0 to 300 (0 to 600 ): Accuracy is notguaranteed.
(Cold junction compensation accuracy: 1 , at 0 to 50 )RTD:
Within 0.3% of each input span 1digit
Input sampling period: 125ms
Input
Thermocouple:
K, J, R, S, B, E, T, N, PL- , C (W/Re5-26)
External resistance, 100 or less
When input is burnt out, Overscale
RTD:
Pt100, JPt100, 3-wire system
Allowable input lead wire resistance: 10 or less per wire
When input is burnt out, Overscale
OUT (Control output)
Relay contact:
1aControl capacity:
3A 250V AC (resistive load)
1A 250V AC (inductive load cos =0.4)
Electrical life: 100,000 cycles
Non-contact voltage: For SSR drive+2
12 0V DC maximum 40mA DC (short circuit protected)
Direct current:
4 to 20mA DC (Isolated type)
Load resistance, maximum 550
Alarm 1 output
The alarm action point is set by the deviation from the SV (except Process alarm).
[When A1 action Energized is selected]
When the input goes outside the range, the output turns ON or OFF (in the case of
High/Low limit range alarm).
[When A1 action De-energized is selected]
The output acts conversely.
An alarm can be selected by Rotary switch and DIP switch from 13 types of alarm(including No alarm action) plus Pattern end output: High limit alarm, Low limit alarm,
High/Low limits alarm, High/Low limit range alarm, Process high alarm and Process low
alarm, the standby function which is applied to them respectively, as well as Pattern end
output.
Setting accuracy: Within 0.3% of each input span 1 digit
Action:ON/OFF action
Hysteresis:
0.1 to 100.0 ( )Output:Relay contact 1aControl capacity: 3A 250V AC (resistive load)
1A 250V AC (inductive load cos =0.4)(However, A1, A2 common terminal, Max. 3A)
Electrical life: 100,000 cycles
40

Controlling action
The fuzzy self-tuning PID, PID, PD or ON/OFF control is selectable by DIP switch.
Fuzzy self-tuning PID control
Proportional band (P):
Automatic
Integral time (I):
Automatic
Derivative time (D):
Automatic
Anti-reset windup (ARW): Automatic
Proportional cycle:
1 to 120 sec
Output high/low limit:
0 to 100% (Direct current output: –5 to 105%)
PID control (with AT function)
Proportional band (P):
0.1 to 999.9%
Integral time (I):
0 to 3600 sec (off when set to 0)
Derivative time (D):
0 to 3600 sec (off when set to 0)
Anti-reset windup (ARW): Automatic
Proportional cycle:
1 to 120 sec
Output high/low limit:
0 to 100% (Direct current output, –5 to 105%)
PD control
Proportional band (P):Derivative time (D):Proportional cycle:
Reset:
Output high/low limit:

0.1 to 999.9%
0 to 3600 sec (off when set to 0)
1 to 120 sec
Proportional band converted value
Within a range of –199.9 to 999.9 ( )0 to 100% (Direct current output: –5 to 105%)

ON/OFF control
Hysteresis:
0.1 to 100.0 ( )Supply voltage:
100 to 240V AC, 50/60Hz, 24V AC/DC, 50/60Hz
Allowable voltage fluctuation: 100 to 240V AC: 85 to 264V AC
24V AC/DC:
20 to 28V AC/DC
Ambient temperature:
0 to 50 (32 to 122 )Ambient humidity:
35 to 85%RH (non-condensing)Power consumption:
Approx. 8VA
Circuit insulation configuration
1
2

Electricallyinsulated
Power source
CPU

3
4
5

Control output
(OUT)

6
7
8

Alarm 1 (A1 ) output
Alarm 2 (A2 ) output

Input

9
10

SM option

C , C 5 option

When control output (OUT) is Direct current output type or Non-contact voltage output
type (the SSR drive), Input is not electrically insulated from Control output (OUT).

41

Insulation resistance
10M or more, at 500V DC
Dielectric strength
Between input terminal and power terminal, 1.5kV AC for 1 minuteBetween output terminal and power terminal, 1.5kV AC for 1 minute
Weight:Approx. 140g
External dimensions: 48 x 48 x 100mm (W x H x D)
Material:
Base, Case: Flame-resistant resin
Color:
Base, Case: Light gray
Attached functions: Power failure countermeasureSelf-diagnosis
Automatic cold junction temperature compensation
Burnout[Burnout]
When the thermocouple or RTD input is burnt out, OUT is turned off (for Direct current
output type, OUT low limit value), and the PV display flashes “”.
[Input error indication]
Indication
Contents
Overscale""
Measured value has
flashes.
exceeded Indication
range high limit value.
Underscale
Measured value has""
dropped below
flashes.
Indication range low
limit value.
TC, RTD inputs
Input
T
Pt100
JPt100

Input range–199.9 to 400.0–199.9 to 750.0–199.9 to 850.0–200 to 850–199.9 to 999.9–320 to 1560
–199.9 to 500.0–199.9 to 900.0

OUT1
OFF (4mA) or
OUT low limit value

OFF (4mA) or
OUT low limit value

Indication range–199.9 to 405.0–199.9 to 759.0–199.9 to 860.0–210 to 860–199.9 to 999.9–338 to 1578
–199.9 to 506.0–199.9 to 910.9

Control range–205.0 to 405.0–209.0 to 759.0–210.0 to 860.0–210 to 860–211.0 to 1010.9–338 to 1578
–206.0 to 506.0–211.0 to 910.9

Indication range and Control range for thermocouple inputs other than the above:[Input range low limit value – Input span x 1%] to [Input range high limit value + Input
span x 1%][Self-diagnosis]
The CPU is monitored by a watchdog timer, and when an abnormal status is foundon the CPU, the controller is switched to warm-up status.
[Automatic cold junction temperature compensation] (Thermocouple input type)This detects the temperature at the connecting terminal between the thermocouple
and the instrument, and always maintains it at the same status as if the reference
junction location temperature was at 0 (32 ).
[Power failure countermeasure]
The setting data is backed up in the non-volatile IC memory.
42

[Warm-up indication]
For approximately 2 seconds after power-on, the input type and the temperature unit
are indicated on the PV display, and the input range high limit value is indicated on the
SV display.
[SV ramp function]
When the SV is adjusted, it approaches the new SV by the preset rate-of-change.
(Rising/Falling value per minute)
When the power is turned on, the control starts from the PV, and approaches the SV
by the rate-of-change.
For Program control, this function will not work.
Setting range:
SV rise rate: 0 to 9999 /min ( /min); Thermocouple inputs except T
0.0 to 999.9 /min ( /min); T, RTD inputs
SV fall rate: 0 to 9999 /min ( /min); Thermocouple inputs except T
0.0 to 999.9 /min ( /min); T, RTD inputs(Default value of the SV rise and fall rate: 0 /min. However, setting to 0 disables thefunction.)
Accessories:
One-touch type mounting brackets: 1 set
Instruction manual: 1 copy
Unit label:
1 labelWire harness CO: 1 length (When the C option is ordered.)
Wire harness CO
1 length each (When the C5 option is ordered.)
Wire harness C5
Wire harness E:
1 length (When the SM option is ordered.)
Screw type mounting brackets: 1 set (When the BL option is ordered.)Terminal cover:
1 piece (When the TC option is ordered.)11.2 Optional Specifications
Alarm 2 (Option code: A2)
The alarm action point is set by the deviation from the SV (except Process alarm).
[When A2 action Energized is selected]
When the input goes outside the range, the output turns ON or OFF (in thecase of High/Low limit range alarm).
[When A2 action De-energized is selected]
The output acts conversely.
An alarm can be selected by Rotary switch and DIP switch from 13 types of alarm(including No alarm action) and Pattern end output: High limit alarm, Low limit alarm,
High/Low limits alarm, High/Low limit range alarm, Process high alarm andProcess low alarm, the standby function which is applied to them respectively, as well
as Pattern end output.
When Alarm 2 (A2 option) and Loop break alarm (LA option) are ordered together,
they utilize common output terminals.
Setting accuracy: The same as Indication accuracy
Action:ON/OFF action
Hysteresis:
0.1 to 100.0 ( )Output:Relay contact, 1a
Control capacity: 3A 250V AC (resistive load)
1A 250V AC (inductive load cos =0.4)(However, A1 and A2 common terminal, Max. 3A)
Electrical life: 100,000 cycles
43Loop break alarm (Option code: LA)
Detects the breaking status on the loop such as heater burnout, sensor burnout or
actuator trouble.
When this option and Alarm 2 (A2) option are ordered together, they utilize common
output terminals.
Setting range: Loop break alarm time: 0 to 200 minutes
Loop break alarm span: 0 to 150 ( ), 0.0 to 150.0 ( )Output:Relay contact 1aControl capacity: 3A 250V AC (resistive load)
1A 250V AC (inductive load, cos =0.4)
Electrical life: 100,000 cycles
Serial communication (Option code: C5, C)
The following operations can be executed from an external computer.
(1) Reading and setting of the SV, PID values and various set values(2) Reading of the PV and the action status(3) Function change
Communication line:
EIA RS-485 (C5 option)
EIA RS-232C (C option)
Communication method: Half-duplex communication
Synchronization method: Start-stop synchronization
Communication speed: 2400, 4800, 9600, 19200bps (Selectable by keypad)
Data format
Start bit: 1
Data bit: 7
Parity: Even parity
Stop bit: 1
Communication protocol: Shinko protocol, Modbus ASCII (Selectable by keypad)(When Modbus protocol is selected, the Digital externalsetting is not usable.)
Digital external setting: Receives digital set value from Shinko Programmablecontrollers PC-900, PCD-33A (with SVTC option).
Set the Set value lock of the FCS-23A to “Lock 3”.
Set value memory number external selection (Option code: SM)
Selects the set value memory number from 2 files by external terminals:
Each file contains the following data:
SV, PID values, A1 value, A2 value, OUT high limit value, OUT low limit value
Memory number: 1, 2 (2 files)
Data:
8
The options (A2, LA, C/C5) cannot be ordered in combination with this option.
Color black (Option code: BK)
Front panel: Dark gray
Case:
Black
Terminal cover (Option code: TC)
Electrical shock protection terminal cover
Screw-type mounting brackets (Option code: BL)
Mountable panel thickness: 1 to 8mm
Drip-proof/Dust-proof (IP54) (Option code: IP)
Drip-proof and Dust-proof specification IP54
Effective only for front panel surface, case section is excluded.
Mount the controller vertically to the flat, rigid panel to ensure it adheres to theDrip-proof/Dust-proof specification.
44

The front cover (soft type, FC-48-S, sold separately) is recommended forcomprehensive Drip-proof/Dust-proof protection.

(Fig. 11.2-1)
User specified
Input, Scale range: Shipped with specified input and range.
Alarm type:
Shipped with specified alarm type (A1, A2).
Control action:
Shipped with specified control action. (e.g. PD control).

12. Troubleshooting

If any malfunctions occur, refer to the following items after checking the power andthe wiring.

Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result
in severe injury or death due to electric shock.
<Indication>
Problem
The PV display is
indicating [], noindication or only PV.
The PV display is
flashing [].

Possible cause and solution• Control output OFF function is working.
To release the function, press the
key for approx.
1 sec.
• Thermocouple or RTD is burnt out.
Change each sensor.
[Thermocouple]
If the input terminals of the instrument are shorted, and if avalue around room temperature is indicated, the instrument
is likely to be operating normally, however, the sensor may
be burnt out.

45

Problem
The PV display is
flashing [].

The PV display is
flashing [].

The indication of
the PV display isirregular or unstable.

<Key operation>
Problem• Unable to set the SV,
P, I, D, proportional
cycle, alarm value, etc.
• The values do notchange by the,keys.
The setting indication
does not change within
the input range even if
the
,
keys
are pressed, and newvalues are unable to be
set.
Program control does
not start even if the
key is pressedin the Program mode.

Possible cause and solution[RTD]
If approximate 100 of resistance is connected to the input
terminals between A-B of the instrument and between B-B
is shorted, and if a value around 0 (32 ) is indicated, theinstrument is likely to be operating normally, however, thesensor may be burnt out.
• Check whether the lead wire of thermocouple or RTD issecurely mounted to the instrument input terminals.
• Check if polarity of thermocouple or compensating lead wireis correct.
• Check whether codes (A, B, B) of RTD match with the
instrument terminals.
• Selection of the sensor input is improper.
Set the sensor input properly using Rotary switch (SW303)
and the DIP switch (SW304).
• Temperature unit ( or ) is not correct.
Set it to a proper unit with the DIP switch (SW304).
• Sensor correction value is not suitable.
Set it to a suitable value.
• Specification of the Thermocouple or RTD is improper.
• AC is leaking into thermocouple or the RTD circuit.
Use an ungrounded type sensor.
• There may be equipment that interferes with, or makes
noise near the controller.
Keep equipment that interferes with or makes noise awayfrom the controller.

Possible cause and solution• Set value lock (Lock 1 or Lock 2) is selected.
Release the lock selection.
• AT (Auto-tuning) is performing.
Cancel AT.
• SV high limit or SV low limit in Auxiliary function setting
mode 1 may be set at the point where the value does notchange.
Set it to a suitable value while in Auxiliary function setting
mode 1.

• Step time has not been set.
Set the step time.

46

<Control>
ProblemPV does not rise.

Possible cause and solution• Thermocouple or RTD is burnt out.
Replace the sensor.
• Check whether the lead wire of thermocouple or RTD issecurely mounted to the instrument terminals.
Control is not• Control output OFF function is working.
performing.
Press thekey to cancel Control output OFF function.
(Only PV display is• Program mode is selected.
indicated.)
To start Program control, press thekey.
To perform Fixed value control, press the
key forapprox. 3 sec while holding down the
key.
Control output (OUT)• OUT low limit value is set to 100% or higher in Auxiliary
remains in an ON
function setting mode 2.
status.
Set it to a suitable value.
Control output (OUT)• OUT high limit value is set to 0% or less in Auxiliary function
remains in an OFF
setting mode 2.
status.
Set it to a suitable value.
For all other malfunctions, please contact our main office or dealers.

13. Character Table<Main setting mode>
Character
SV

Item

Default

Data

Default

Data

0<Sub setting mode>
Character
Item
Set value memory number
AT Perform/Cancel
Proportional band
Integral time
Derivative time
Proportional cycle
Manual reset
Alarm 1 value
Alarm 2 value
Loop break alarm time
Loop break alarm span
<Auxiliary function setting mode 1>
Character
Item
Set value lockSV high limit
SV low limit
Sensor correction
Instrument number
Communication speed
Communication protocol

1
AT Cancel
2.5%
200 sec
50 secR/M: 30 sec, S/M: 3 sec
0.0
000 minutes
0
Default
Unlock400
00.0
09600bps
Shinko protocol

47

Data

<Auxiliary function setting mode 2>
Character
Item
Scaling high limit value
Scaling low limit value
PV filter time constant
OUT high limit value
OUT low limit value
OUT ON/OFF hysteresis

Default
1370-200
0.0 sec
100%0%
1.0
Alarm 1 action Energized/De-energized Energized
Alarm 2 action Energized/De-energized Energized
Alarm 1 hysteresis
1.0
Alarm 2 hysteresis
1.0
Alarm 1 action delay time
0 sec
Alarm 2 action delay time
0 sec
Indication when control output OFF OFF on the PV display
SV rise rate
0 /minuteSV fall rate
0 /minute<Program mode>
Character
Item
Fixed value control/Program control
Step 1 time
Step 2 time
Step 3 time
Step 4 time
Step 5 time
Step 6 time
Step 7 time

Default

Data

Data

Fixed value control

00.00
00.00
00.00
00.00
00.00
00.00
00.00

***** Inquiries *****For any inquiries about this unit, please contact the vendor
where you purchased the unit after checking the following.
[Example]• Model --------------------------- FCS-23A-R/M• Input type ---------------------- K• Option --------------------------- A2, C5• Serial number ----------------- No. xxxxxx
In addition to the above, please let us know the details of themalfunction, if any, and the operating conditions.

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION

Head Office: 2-5-1, Senbahigashi, Minoo, Osaka, Japan
http://www.shinko-technos.co.jp
URL:
Tel : 81-72-727-6100
E-mail:overseas@shinko-technos.co.jp
Fax: 81-72-727-7006
No. FCS21E10 2012.10