INSTRUCTION MANUALFORMICROCOMPUTER BASEDTEMPERATURE INDICATING CONTROLLER

GCM-200

PV

OUT1

OUT2

HB
AT

SV

A1

A2

MODE

OUT
OFF

GCM

Thank you for your purchase of our Microcomputer based Temperature Indicating Controller
GCM-200.
This manual contains instructions for the mounting, functions, operations and notes when
operating the GCM-200.
For model confirmation and unit specifications, please read this manual carefully before
starting operation.

To prevent accidents arising from the use of this controller, please ensure the operator
using it receives this manual.

NOTES TO USERS

GCM-200***** Note to users *****
Before operating this controller, make sure that you have understood the following.

Warning
Turn the power supply to the instrument OFF before wiring or checking.
Working or touching the terminal with the power switched ON may result in an
Electric Shock which could cause severe injury or death.
Moreover, the instrument must be grounded before the power supply
to the instrument is turned on.

Caution• This instrument should be used according to the specifications described in the
manual. If it is used outside the specifications, it may malfunction or cause fire.
• Be sure to follow the warnings, cautions and notices. Failure to do so could cause
serious injury or malfunction.
• 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.
• Specifications of the GCM-200 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 arecorrect, but if there are any doubts, mistakes or questions, please inform our sales
department.
• Be sure to turn the power supplied to the instrunment OFF when cleaning.
• Wipe the instrument using a dry soft cloth.
(If the paint thinner is used for wiping, the instrument may be deformed or discolored.)• The display parts are more easily damaged. Do not strike them with hard objects orpress hard on them.
• Any unauthorized transfer or copying of this document, in part or in whole,is prohibited.
• Shinko Technos is not responsible for any damages or secondary damages incurred
as a result of using this product, including any indirect damages.

Notice• It is recommended that PID auto-tuning be performed on the trial run.
• It is advised to provide the protective device against environmental conditions as may
cause damage to the device or contribute to the deterioration of its parts.
2

CONTENTS

GCM-200--- CONTENTS --1. Model names
1.1 Model names --------------------------------------------------------------------------------- 5
1.2 How to indicate the model nameplate -------------------------------------------------- 5
2. Name and functions of the sections -------------------------------------------- 6

3. Operations
3.1 Operation flow chart ------------------------------------------------------------------------- 7
3.2 Operations(1) PV/SV display mode ------------------------------------------------------------------ 8(2) Main setting mode --------------------------------------------------------------------- 9(3) Sub setting mode
Auto-tuning Perform/Cancel or Auto-reset Perform --------------------------- 9Main proportional band setting ----------------------------------------------------- 10
Cooling proportional band setting -------------------------------------------------- 10
Integral time setting -------------------------------------------------------------------- 11
Derivative time setting ----------------------------------------------------------------- 11
Main proportional cycle setting ------------------------------------------------------ 11
Cooling proportional cycle setting -------------------------------------------------- 11
Temperature alarm 1 (A1) setting -------------------------------------------------- 11
Temperature alarm 2 (A2) setting -------------------------------------------------- 12
Heater burnout alarm setting -------------------------------------------------------- 12(4) Auxiliary function setting mode
Setting value lock designation ------------------------------------------------------ 13
Main setting value high limit setting ------------------------------------------------ 13
Main setting value low limit setting ------------------------------------------------- 13
Sensor correction setting ------------------------------------------------------------- 13
Main output high limit setting -------------------------------------------------------- 14
Main output low limit setting --------------------------------------------------------- 14
Main output ON/OFF action hysteresis setting --------------------------------- 14
Cooling action mode selection ------------------------------------------------------ 14
Cooling output high limit setting ---------------------------------------------------- 14
Cooling output low limit setting ----------------------------------------------------- 15
Cooling output ON/OFF action hysteresis setting ------------------------------ 15
Overlap band/Dead band setting --------------------------------------------------- 15
Sensor selection ----------------------------------------------------------------------- 15
Temperature alarm 1 (A1) action selection ------------------------------------- 16
Temperature alarm 2 (A2) action selection ------------------------------------- 16

3

CONTENTS

GCM-200

Temperature alarm 1 (A1) hysteresis setting ------------------------------------ 17
Temperature alarm 2 (A2) hysteresis setting ------------------------------------ 17
Heating/Cooling selection ------------------------------------------------------------ 17(5) Control output OFF function ---------------------------------------------------------- 17
4. Running ---------------------------------------------------------------------------------------- 18

5. Action explanations
5.1 Standard action ------------------------------------------------------------------------------ 19
5.2 Heater burnout alarm action -------------------------------------------------------------- 19
5.3 Heating and Cooling actions (Option D )Heating (reverse) and Cooling (direct) actions ----------------------------------- 20
When setting Dead band --------------------------------------------------------------- 21
When setting Overlap band with Relay contact output ------------------------- 22
5.4 ON/OFF action ------------------------------------------------------------------------------ 23
5.5 Temperature alarm 1 (A1) and 2 (A2) action ----------------------------------------- 24

6. Control actions
6.1 Explanations of PID ------------------------------------------------------------------------ 25
6.2 PID auto-tuning of this controller -------------------------------------------------------- 26
6.3 Auto-reset (offset correction) ------------------------------------------------------------- 27
7. Other functions ---------------------------------------------------------------------------- 27

8. Mounting to control panel
8.1 Site selection -------------------------------------------------------------------------------- 28
8.2 External dimension drawing ------------------------------------------------------------- 28
8.3 Panel cutout drawing ---------------------------------------------------------------------- 28
8.4 Current transformer (CT) dimension drawing --------------------------------------- 29
8.5 Mounting -------------------------------------------------------------------------------------- 29

9. Wiring connection
9.1 Terminal arrangement --------------------------------------------------------------------- 30
9.2 Wiring connection examples ------------------------------------------------------------ 31

10. Specifications
10.1 Standard specifications ------------------------------------------------------------------ 33
10.2 Optional specifications ------------------------------------------------------------------- 35
11.Troubleshooting ---------------------------------------------------------------------------- 37
12. Character table ----------------------------------------------------------------------------- 39

4

MODEL NAMES

GCM-200

1. Model names

1.1 Model names
Standard models
GCM–2 3Control action
3
Temperature alarm–
0A

Output

/

R
S
A

Input

E
R

GCM-200 type
PID control
No alarm action
Alarm action is applied *Relay contact
Non-contact voltage
DC current
Thermocouple K, J, E
RTD Pt100, JPt100

8 types of alarm action and no alarm action are selectable by key operation.
Alphanumeric character to represent the functions or type is applied to the.
[Example]

GCM–23A – R/E, W

Heater burnout alarm output
Thermocouple input
Relay contact output
Temperature alarm action is applied
72(W) x 72(H) x 100(D)mm

Optional code
Code
Description
A2
Temperature alarm 2 output
W
Heater burnout alarm output (including sensor burnout alarm)
DR: Relay contact
Heating/Cooling control output
D
DS: Non-contact voltage
Heating output: Main (OUT1) output
DA: Current
Cooling output: Sub (OUT2) output
MR
Multi-range
BK
Color: BlackIP
Dust-proof•Drip-proof (IP54), only for front panelTC
Terminal coverWarning
Do not take the inner assembly out nor touch the terminal with the power
supply on. Touching the terminal with the power switched ON may result inan Electric Shock which could cause severe injury or death.
1.2 How to indicate the model nameplate
Model nameplates are put on the case and the left side of the inner assembly.
[Model nameplate][Example](1)
Relay contact output, thermocouple input
23A–R/E
Temperature alarm 2 (A2) output
A2(2)
W(20A)
Heater burnout alarm output (20A)K
0 to 400
(3)
N o.
(4)
(1): Model name (2): Option codes(3): Input(4): Instrument number (Indicated only on the inner assembly)
In the case of Heater burnout alarm output, the specified current value isentered in ( ).
5NAME AND FUNCTIONS OF THE SECTIONS

GCM-200

2. Name and functions of the sections
(1)

(2)

(3)

PV

OUT1
OUT2
HB
AT

SV

A1
A2

MODE

(4)
(5)
(6)
(7)
(8)

OUT
OFF

GCM

[Fig. 2-1]

(9) (10)(11) (12)(1) PV display
Indicates the Process variable (PV) with the red LED.
(2) SV display
Indicates the Setting value (SV) with the green LED.
(3) Auto-tuning or Auto-reset action indicator (• AT)
The dot AT on the PV display blinks during the auto-tuning or auto-reset.
(4) Main control output or Heating output [option] action indicator (OUT 1)The green LED is lit when the Control output or Heating output is on.
(5) Cooling output action indicator (OUT 2 ) [Option]
The yellow LED is lit when the Cooling output is on.
(6) Heater burnout alarm output action indicator (HB) (including sensor burnout
alarm) [Option]
The red LED is lit when the Heater burnout alarm or Sensor burnout alarm output is on.
(7) Temperature alarm 1 (A1) output action or Pattern end 1 output indicator (A1)
The red LED is lit when Temperature alarm 1 (A1) output is on.
(8) Temperature alarm 2 (A2) output action or Pattern end 2 output indicator (A2)[Option]: The red LED is lit when Temperature alarm 2 (A2) output is on.
: Increases the numeric value on the SV display during setting
mode.
Continuous pressing of the key makes the value change faster.
(10)
Decrease key: Decreases the numeric value on the SV display during setting
mode.
Continuous pressing of the key makes the value change faster.
(11)
Mode key: Selects a setting mode.
OUT/OFF key : Turns the control output OFF which is the same status as(12)
when the power is turned off.
key is pressed for approx. 1 second, the Control output OFF
In any mode, if thefunction will work. Once the function is enabled, the function cannot be released even if
the insrument power is turned off and on again. To release the function, press the
key again for 1 second.
The setting value is registered by pressing the
key.
(9)

Increase key

6

OPERATIONS

GCM-200

3. Operations
3.1 Operation flowchart
Instrument power ON
Warm-up status (2s)Control output OFF function
PV/SV display mode

[Main setting mode]
Main setting
PV

1s

PV

+
[Sub setting mode]
Auto-tuning Perform/Cancel+
3s[Auxiliary function setting mode]
Setting value lockPV

Auto-reset Perform
PV

Main setting value high limit

PV

PV

*

Main setting value low limit
PV

Main proportional band setting

Sensor correction

PV

PV

Cooling proportional band setting

Main output high limit

PV

PV

Integral time setting

Main output low limit

PVPV

Derivative time setting

Main output ON/OFF hysteresis

PV

PV

Main proportional cycle setting

Cooling action mode

PV

PV

Cooling proportional cycle setting

Cooling output high limit

PV

PV

Temperature alarm 1 (A1) setting

Cooling output low limit

PV

PV

Temperature alarm 2 (A2) setting

Cooling output ON/OFF hysteresis

PV

PV

Heater burnout alarm setting

Overlap/Dead band

PVPV

Sensor selection
PV

Temperature alarm 1 (A1)action selection
PV

Temperature alarm 2 (A2)
action selection
PV

Temperature alarm 1 (A1)hysteresis
PV

Temperature alarm 2 (A2)hysteresis
PV

Heating/Cooling selection
PV(Dotted lines): Options+: Press the
key while thekey is being pressed.
+
3s: Press the keys until
is indicated for approx. 3 seconds being pressed.
1s: Press the key until
is indicated for approx. 1 second.
* If the auto-tuning or auto-reset is designated, and when the
key is pressed, the display reverts to the PV/SV display.

7

OPERATIONS (PV/SV DISPLAY MODE)

GCM-200

3.2 Operations
The PV display indicates the sensor type and the SV display indicates the rated scale
maximum value for approx. 2 seconds after the power is turned on. See [table 3.2-1].
If the Main setting value high limit is set, the display indicates the value.
During this time, all outputs and LED indicators are in their off status.
After that, the actual temperature is displayed on the PV display, main setting valueon the SV display and the control starts
is indicated on the PV display.
If the Control output OFF function is working,key again for approx. 1 second. (page 17)
To cancel the function, press the
The setting items are represented as follows.
Main setting
Setting item
Setting value
PV display

SV display(1) PV/SV display mode
Instrument power ON
Warm-up status[Table 3.2-1]
Rated value[Table 3.2-1]
Input

PV display

SV display

PV display

SV display

K
J
E
Pt100
JPt100PV/SV display mode
ActualMain
Temperature setting value

Mode during the control.
None of the contents of setting items or setting values
can be changed.

8

OPERATIONS (MAIN SETTING MODE)

GCM-200(2) Main setting mode
key is pressed, the Main setting mode willIn the PV/SV display mode, if thebe selected.
If thekey is pressed after the setting, the setting value will be registered and themode will revert to the PV/SV display.
PV/SV display mode
ActualMain setting
Temperature value
Main setting
Settingvalue

Mode to set the setting value for the main control.
Setting range: From Main setting value low limit
to Main setting value high limit[Factory adjusted as 0 ( ) or 0.0 ](3) Sub setting mode
In the PV/SV display mode, if the
key is pressed while thekey is beingpressed, the Sub setting mode will be selected.
If thekey is pressed after the setting, the setting value is registered andthe next setting item will be selected.
PV/SV display mode
ActualMain setting
temperature value+
Auto-tuning Perform/Cancel Mode to designate the Auto-tuning Perform/Cancel
or Auto-reset Performor Auto-reset (offset correction) Perform
Designation
Designation Auto-reset can be performed only during PD action.
(When Perform)

When the P, PI or ON/OFF action is selected,
auto-tuning is not available.
[Factory adjusted as Auto-tuning, Auto-reset Cancel]
SV(Auto-tuning, Auto-reset Cancel)

SV(Auto-tuning, Auto-reset Perform)

9OPERATIONS (SUB SETTING MODE)

GCM-200• If the Auto-tuning Perform is designated and the
key ispressed, the mode reverts to the PV/SV display and the dot AT
on the PV display blinks.
• When the Auto-tuning is finished, the dot AT on the PV display
will be unlit, and the P, I and D values are set automatically.
• During the Auto-tuning, none of the settings can be performed.
• If the Auto-tuning is released in the process, the PID values
return to the former values.
key is pressed, the control• During the auto-tuning, if the
key is pressed
output OFF function works. When theagain, the function will be cancelled.

key is• If the Auto-reset Perform is designated and thepressed, the mode reverts to the PV/SV display, and the dot AT
on the PV display blinks.
• When the Auto-reset is started, it begins the offset correction
at once.
• In order to avoid mis-operations, other settings can not be
performed for 4 minutes after the Auto-reset begins.
• When the Auto-reset is finished, the dot AT on the PV display
is turned off, and the corrected value is set automatically.

Main proportional band setting
Setting value

Mode to set the proportional band for Main control.
ON/OFF action when setting the value to 0 or 0.0
Setting range:
For TC or RTD input: 0 to 999 ( )RTD input with decimal point: 0.0 to 99.9 ( )[Factory adjusted as 10 (20 ) or 10.0 ]Cool proportional band setting
Setting value

Mode to set the proportional band for cooling
control.
Cooling control ON/OFF action when setting
the value to 0.0
Available only when the option [code: D ] isapplied.
Setting range: 0.0 to 10.0 (Multiplying factor tothe main control proportional band value)[Factory adjusted as 1.0 times]
10

OPERATIONS (SUB SETTING MODE)

GCM-200

Integral time setting
Setting value

Mode to set the integral time.
Setting range: 0 to 999s
Setting the value to 0 disables the function andbecomes PD action.
[Factory adjusted as 200s]

Derivative time setting
Setting value

Mode to set the derivative time.
Setting range: 0 to 300s
Setting the value to 0 disables the function andbecomes PI action.
[Factory adjusted as 50s]

Main proportional cycle
setting
Setting value

Mode to set the proportional cycle for Main control.
Setting range: 1 to 120s
Not available for ON/OFF action or for the current
output type
[Factory adjusted as 30s for Relay contact output
type, and 3s for Non-contact voltage output type]
With the Relay contact output type, if the
Proportional cycle time is decreased, thefrequency of the relay action increases, andthe life of the relay contact is shortened.

Cooling proportional cycle
setting
Setting value

Mode to set the proportional cycle for the Cooling
control.
Not available when the ON/OFF action is selected
for the cooling output.
Available only when the option [DR] or [DS] isapplied.
Setting range: 1 to 120s
[Factory adjusted as 30s for Relay contact output
type, and 3s for Non-contact voltage output type]

Temperature alarm 1 (A1)setting
Setting value

Mode to set the action point for the Temperature
alarm 1 (A1) output.
Setting the value to 0 or 0.0 disables the function(except during the process value alarm action).
Not available if No alarm is selected in Temperature
alarm 1 (A1) action selection
Setting range: See [table 3.2-2] (page 12).
[Factory adjusted as 0 ( ) or 0.0 ]11OPERATIONS (SUB SETTING MODE)
Temperature alarm 2 (A2)setting
Setting value

GCM-200

Mode to set the action point for the Temperature
alarm 2 (A2) output.
Setting the value to 0 or 0.0 disables the function(except during the process value alarm action).
Not available if No alarm is selected in Temperature
alarm 2 (A2) action selection or when the option[A2] is not applied.
Setting range: See [table 3.2-2] below.
[Factory adjusted as 0 ( ) or 0.0 ]Heater burnout alarm setting
Setting value

Mode to set the Heater current value for Heaterburnout alarm.
Available only when the option [W] is applied.
Setting range: When W (20A), 0 to 20A
When W (50A), 0 to 50A[Factory adjusted as 0A]
Setting the value to 0 disables the Heater burnout alarm function.
Self-holding is not available for the alarm output.
PV/SV display mode
ActualMain setting
Temperature
value
Setting range of Temperature alarm 1 (A1) and 2 (A2)
[Table 3.2-2]
Alarm type
Setting range
High limit alarm–199 to input range maximum value ( )Low limit alarm–199 to input range maximum value ( )High/Low limits alarm(0 to input range maximum value) ( )High/Low limit range alarm(0 to input range maximum value) ( )Process high alarm
Input range minimum to input range maximum
High limit alarm with standby–199 to input range maximum value ( )Low limit alarm with standby–199 to input range maximum value ( )High/Low limits alarm with standby(0 to input range maximum value) ( )When the decimal point is applied for the RTD input
Alarm type
Setting range
High limit alarm–19.9 to 99.9
Low limit alarm–19.9 to 99.9
High/Low limits alarm(0.0 to 99.9)
High/Low limit range alarm(0.0 to 99.9)
Process high alarm
Input range minimum to input range maximum
High limit alarm with standby–19.9 to 99.9
Low limit alarm with standby–19.9 to 99.9
High/Low limits alarm with standby(0.0 to 99.9)
12

OPERATIONS (AUXILIARY FUNCTION SETTING MODE)

GCM-200(4) Auxiliary function setting mode
key is pressed for approx. 3 seconds while
In the PV/SV display mode, if the
key is being pressed, the Auxiliary function setting mode can be selected.
thekey is pressed after the setting, the setting value is registered and the next
If thesetting item is selected.
PV/SV display mode
ActualMain setting
Temperature
value+
for approx. 3s
Setting value lockMode to lock the setting value to prevent errors.
designation
The setting item to be locked depends on the
Designation
designation. [Factory adjusted as Unlock status.]
When designating Lock status, designate Lock 1
or 2 after setting necessary items in Unlock status.
Unlock status. All setting values are changeable.
Lock 1: None of the setting items in the Mainand Sub setting mode can be changed.
Lock 2: None of the setting items in the Sub
setting mode can be changed.
Though Lock 1 and Lock 2 are designated, they will not work
to the setting items in the Auxiliary function setting mode.
When Lock 1 and Lock 2 are designated, PID auto-tuning
or auto-reset will not function.
Main setting value
Mode to set the high limit of main setting value.
high limit setting
Setting range: Main setting value low limit to
Setting value
Rated scale maximum value[Factory adjusted as Rated scale maximum value]
Main setting value
low limit setting
Setting value

Sensor correction setting
Setting value

Mode to set the low limit of main setting value.
Setting range: Rated scale minimum value toMain setting value high limit[Factory adjusted as Rated scale minimum value]

Mode to set the correct value of the sensor.
Setting range: –199 to 200 ( )With a decimal point, –19.9 to 20.0
[Factory adjusted as 0 ( ) or 0.0 ]Sensor correction function
Corrects the input value from the sensor. When a sensor cannot
be set at a location where control is desired, the sensor measuring
temperature may deviate from the temperature in the controlled
location. When controlling with multiple controllers, the accuracyof sensors has influence on the control. Therefore, sometimes themeasuring temperature (input value) does not concur with thesame setting value. In such a case, the control can be set withdesired temperature by shifting the input value of sensors.
13

OPERATIONS (AUXILIARY FUNCTION SETTING MODE)

GCM-200

Main output high limit setting
Setting value

Mode to set the high limit value of the main output.
Setting range: Main output low limit value to 105%
Setting greater than 100% is effective to the Current
output type. [Factory adjusted as 100%]
Not available for the ON/OFF action.

Main output low limit setting
Setting value

Mode to set the low limit value of the main output.
Setting range: –5% to Main output high limit value
Setting less than 0% is effective to the Current
output type. [Factory adjusted as 0%]
Not available for the ON/OFF action.

Main output ON/OFF
action hysteresis setting
Setting value

Mode to set the ON/OFF action hysteresis for themain control output.
Setting range: 0.1 to 99.9 ( )[Factory adjusted as 1.0 ( )]Available only when the ON/OFF action isdesignated.

Cooling action mode selection
Selection

Mode to select the Cooling action,
Air cooling, Oil cooling or Water cooling.
[Factory adjusted as Air cooling]
This display is not available when the option [Dis not applied or when ON/OFF action.
Air cooling](Linear characteristic)

Oil cooling(The 1.5th power of the Linear
characteristic)
Water cooling (The 2nd power of the Linear
characteristic)
Cooling output
high limit setting
Setting value

Mode to set the high limit value of the cooling output.
Setting range:
Cooling output low limit value to 105%
Setting greater than 100% is effective to theCurrent output type.
[Factory adjusted as 100%]
This display is not indicated when the option [D ] isis not applied or when ON/OFF action of cooling output.
14

OPERATIONS (AUXILIARY FUNCTION SETTING MODE)

GCM-200

Cooling output
low limit setting
Setting value

Mode to set the low limit value of the cooling output.
Setting range: –5% to cooling output high limit value
Setting less than 0% is effective to the Current
output type.
[Factory adjusted as 0%]
This display is not indicated when the option [D ] is
not applied or when ON/OFF action of cooling output.

Cooling output ON/OFF
action hysteresis setting
Setting value

Mode to set the ON/OFF action hysteresis for thecooling control output.
Setting range: 0.1 to 99.9
[Factory adjusted as 1.0 ( )]This display is indicated only when the option [D ]is applied and when ON/OFF action of cooling output.

Overlap band/Dead bandsetting
Setting value

Mode to set the Overlap band and Dead bandfor the Heating control output and Cooling
control output.
+ setting value: Dead band– setting value: Overlap band
Setting range : (0 to 100%) of Heating
proportional band
[Factory adjusted as ]Sensor selection
Selection

Mode to select the input type from Thermocoupleor(6 types) and RTD (6 types), and the unit
Available only when the option [MR] is applied.

SV

K

SV

J

SV

E

SV

Pt100

SV

JPt100

SV

Pt100

SV

JPt10015

OPERATIONS (AUXILIARY FUNCTION SETTING MODE)
SV

K

SV

J

SV

E

SV

Pt100

SV

JPt100

GCM-200

Select a sensor type according to the using input
sensor. For example, if J sensor type is selectedthough K sensor type is used, it will cause an error.
Temperature alarm 1 (A1)action selection
Selection

Mode to select the Temperature alarm 1 (A1) action.
Not available for the GCM-230 type.
[Factory adjusted as No alarm action]SV

No alarm action

SV

High limit alarm actionSV

Low limit alarm action

SV

High/Low limits alarm action

SV

High/Low limit range alarm action

SV

Process high alarm action

SV

High limit alarm action with standbySV

Low limit alarm action with standby

SV

High/Low limits alarm action with standby

Temperature alarm 2 (A2)
action selection
Selection

Mode to select the Temperature alarm 2 (A2) action.
Available only when the option [A2] is applied.
Action selection initial value are the same as
those of Temperature alarm 1 (A1).

16

OERATIONS (CONTROL OUTPUT OFF FUNCTION)

GCM-200

Temperature alarm 1 (A1)hysteresis setting
Setting value

Mode to set the hysteresis for the Temperature
alarm 1 (A1).
Not available for the GCM-230 type.
Setting range: 0.1 to 99.9
[Factory adjusted as 1.0 ( )]Temperature alarm 2 (A2)hysteresis setting
Setting value

Mode to set the hysteresis for the Temperature
alarm 2 (A2).
Available only when the option [A2] is applied.
Setting range and initial value are the same as
those of Temperature alarm 1 (A1) hysteresis setting.

Heating/Cooling selection
Selection

Mode to select the control action type Heating(reverse) or Cooling (direct).
[Factory adjusted as Heating (reverse)]

SV

Heating (reverse) action

SV

Cooling (direct) action

PV/SV display mode
ActualMain setting
temperaturevalue(5) Control output OFF function
A function to turn the control output OFF even if the power to the instrument is
supplied. The function is used when required to halt the control action or when the
GCM-200 is not being used in multiple controllers.
Control output OFF function can be selected from any mode by pressing the
key for approx. 1 second.
PV/SV display mode
ActualMain setting
temperature
value
for approx. 1s
1s
Control output OFF function

Sensor selection
Selection

for approx. 1s

NoticeOnce the Control output OFF function is enabled, the function cannot be released
even if the power to the instrument is turned OFF and turned ON again.
key again for approx. 1 second.
To cancel the function, press the17

RUNNING

GCM-200

4. Running
After the controller has been mounted to the control panel and wiring iscompleted, it can be started in the following manner.
(1) Turn the power supply to the GCM-200 ON.
For approx. 2s after the power is switched ON, the type of sensor will be
indicated on the PV display, and the rated scale maximum value will be
indicated on the SV display. See [table 4-1] below.
If the Main setting value high limit is set, the value is indicated on the
SV display.
During this time, all outputs and LED indicators are in their OFF status.
After that, the actual temperature is indicated on the PV display and Main
setting value on the SV display.
While the Control output OFF function is working,PV display.

is indicated on the[Table 4-1]
Input

PV display

SV display

PV display

SV display

K
J
E
Pt100
JPt100(2) Input the setting value, referring to Chapter 3. Operations.
(3) Turn the load circuit power ON.
Starts the control action so as to keep the controlled object at the main
setting value.

18

ACTION EXPLANATIONS

GCM-200

5. Action explanations
5.1 Standard action
ActionControlactionHeating (reverse) action

Cooling (direct) action

Proportional band

Proportional band

ON

ON

OFF

OFF

Relay contact

Setting

Setting

H 5

H 5

H 5

H 5

H 5

H 5

C 6

C 6

C 6

C 6

C 6

C 6

L 7

L 7

L 7

L 7

L 7

L 7

Current

OutputNon-contact
voltage

(*1)

(*1)

+
6
12Vdc

+
6
12/0Vdc

+
6
0Vdc

+
6
0Vdc

+
6
0/12Vdc

+
6
12Vdc

7

7

7

7

7

7

(*1)

(*1)
+
6
20mAdc7+

20 to 4mAdc

+
6
4mAdc

+
6
4mAdc

4 to 20mAdc+
6
20mAdc

7

7

7

7

7

6

6

+

(*2)

(*2)
Indicator[OUT1] Green

Unlit

Lit

Unlit

Lit

(*1) Cycle action is performed according to deviation.
(*2) Changes continuously according to deviation.
5.2 Heater burnout alarm action
ON

8

8

9

9

OFF
Setting
Small

Load current

Large

19

Lit

Unlit

ACTION EXPLANATIONS

GCM-200

5.3 Heating and Cooling actions [Option D ]Heating (reverse) and Cooling (direct) actions
Cooling action
Cooling P-band

Heating action
Heating P-band
ActionHeating

Cooling

Setting

Relay
contact

Output Non-contact
voltage

H 5

H 5

C 6

C 6

L 7

L 7

H 5

17

C 6
18

+
6
12/0Vdc

17

7

7

7
Indicator[OUT1] Green
Indicator[OUT2] Yellow

18

18

(*1)

(*1)

17

0Vdc

+
6
0Vdc

18

7

18

+

(*1)

Current

17

L 7

+
6
12Vdc

+
6
20mAdc

17

+
+
6
17
20 to 4mAdc 4mAdc
7
18
(*2)

+

0/12Vdc

17

+

12Vdc
18

(*1)
+
+
17
6
4mAdc 4 to 20mAdc
7

18

17

+

20mAdc
18

(*2)
Unlit

Lit
Unlit

Lit

(*1) Cycle action is performed according to deviation.
(*2) Changes continuously according to deviation.

20

ACTION EXPLANATIONS

GCM-200

When setting Dead band
ActionHeating action

Cooling action
Proportional band

Dead band

Proportional band
Control action
Setting
5
6

Relay
contact

7

5

5

6

17

17

17

18

18

18

6

7

7

(*1)
Noncontact
Output voltage

Current

+
6
12Vdc
7

+
6
20mAdc7(*1)+
6
12/0Vdc

+
6
0Vdc

17

7
(*1)

7

18

6

+

20 to 4 mAdc

7
(*2)

+

0Vdc

17

+

17

+

0/12Vdc

12Vdc

18

18

(*1)
+
6
4mAdc

17

7

+

4mAdc

+
17
4 to 20mAdc

20mAdc

18

18

18

17

+

(*2)

Indicator[OUT1] Green

Lit

Unlit

Indicator[OUT2] Yellow

Unlit

Lit

(*1) Cycle action is performed according to deviation.
(*2) Changes continuously according to deviation.

21

ACTION EXPLANATIONS

GCM-200

When setting Overlap band with Relay contact output.
Heating proportional band
Cooling proportional band
Overlap band

Control action

SettingHeating
output

5

5

5

6

6

6

7

7

7
(*1)

Relay
contact
outputCooling
output

17

17

17

18

18

18

(*1)
Indicator[OUT1] Green

Lit

Unlit

Indicator[OUT2] Yellow

Unlit

Lit

(*1) Cycle action is performed according to deviation.

22

ACTION EXPLANATIONS

GCM-200

5.4 ON/OFF action
ActionControlactionHeating (reverse) action

Cooling (direct) action

Hysteresis

Hysteresis
ON

ON
OFF

OFF
Main setting

Current

OutputNon-contact
voltage

Relay contact

Main setting
5

5

5

5

6

6

6

6

7

7

7

7

+
6
12Vdc

+
6
0Vdc

+
6
0Vdc

+
6
12Vdc

7

7

7

7

+
6
20mAdc

+
6
4mAdc

+
6
4mAdc

+
6
20mAdc77

7

7Indicator[OUT1] Green

Lit

Unlit

part: Acts ON or OFF.

23

Unlit

Lit

ACTION EXPLANATIONS

GCM-200

5.5 Temperature alarm 1 (A1) and 2 (A2) action
Low limit alarm
Hysteresis

High limit alarm
Hysteresis
Temperature
alarm action

ON

ON

OFF

OFF
Main
settingAlarmsettingAlarmsettingMainsetting

15

15

15

15

16

16

16

16

OutputIndicator

Temperature
alarm action

Lit
Unlit
High limit alarm with standby
Hysteresis

Unlit
Lit
Low limit alarm with standby
Hysteresis

ON

ON

OFF

OFF
Main
settingAlarmsettingAlarmsettingMainsetting

15

15

15

15

16

16

16

16

OutputIndicator
Unlit
Lit
High/Low limit range alarm
Hysteresis

Lit
Unlit
High/Low limits alarm
Hysteresis
Temperature
alarm action

ON

ON

OFF

OFF
Alarm
settingMainsetting

Alarm Main Alarm
setting setting setting

Alarmsetting

15

15

15

15

15

15

16

16

16

16

16

16

Lit

Unlit

OutputIndicator

Lit

High/Low limits alarm with standby

Hysteresis
Temperature
alarm action

Lit
Process high alarm
Hysteresis

ON

ON

OFF

OFF
Alarm
settingMainsetting

Unlit

Unlit

Alarm
settingAlarmsetting

15

15

15

15

15

16

16

16

16

16

Lit

Unlit

OutputIndicator

Lit

Standby function works at
part.
Output terminals for Temperature alarm 2:
24

Unlit

17 – 18

Lit

CONTROL ACTIONS

GCM-200

6. Control actions
6.1 Explanations of PID(1) Proportional band (P)Proportional action is the action which the control output varies in proportion
to the deviation between the setting value and the processing temperature.
If the proportional band is narrowed, even if the output changes by a slightvariation of the processing temperature, better control results can be obtained
as the offset decreases.
However, if when the proportional band is narrowed too much, even slight
disturbances may cause variation in the processing temperature, and control
action changes to ON/OFF action and the so called hunting phenomenon occurs.
Therefore, when the processing temperature comes to a balanced position
near the setting value and a constant temperature is maintained, the mostsuitable 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,
the returning speed to the setting point is quickened. However, the cycleof oscillation is also quickened and the control becomes unstable.
(3) Derivative time (D)Derivative action is used to restore the change in the processing temperatureaccording to the rate of change. It reduces the amplitude of overshoot andundershoot width.
If the derivative time is shortened, restoring value becomes small, and if thederivative time is made longer, an excessive returning phenomenon may
occur and the control system may be oscillated.

25

CONTROL ACTIONS

GCM-200

6.2 PID auto-tuning of this controller
In order to decide each value of P, I, D and ARW automatically, this system
makes the controlled object’s temperature fluctuate.
(1) When the difference between setting value and processing temperatureis large when the temperature rises.
Fluctuation is applied at the temperature 20 lower than the setting value.
Settingvalue

Temperature 20( ) lower than the setting value(1) PID calculation(2) PID decided(3) Controlling action
is performed withthe values set by
PID auto-tuning.

TemperatureTime

AT starting point
(1)

(2)

(3)

(2) When the control is stable or when control temperature is within ±20
of setting value.
Fluctuation is applied at the setting value.

Setting value
TemperatureTime

AT starting point
(1)

(2)

( )

(1) PID calculation(2) PID decided(3) Controlling action
is performed withthe values set by
PID auto-tuning.

(3)(3) When the control temperature is 20 ( ) or higher than the setting value
Fluctuation is applied at the temperature 20 ( ) higher than the setting value.
Temperature 20 ( ) higher than the setting value
Temperature
Setting
value

Time

AT starting point
(1)

(2)

26

(3)

(1) PID calculation(2) PID decided(3) Controlling action
is performed withthe value set by
PID auto-tuning.

OTHER FUNCTIONS

GCM-200

6.3 Auto-reset (offset correction)
Auto-reset is performed to correct the offset at the point at which PV indicationis stabilized within the proportional band during the PD action.
Since the corrected value is internally memorized, it is not necessary to performthe auto-reset again as long as the process is the same. However,when the proportional band is set to 0, the corrected value is cleared.
Auto-reset is performed
Setting value
Offset span

Temperature
Offset is correctedTime

7. Other functions(1) Burnout alarm(Overscale)
When the thermocouple or RTD is burnt out or when the input value rises tothe [Rated scale maximum value +1 (or 99.9+0.1*)] or greater, the control
output is turned OFF (main output low limit value for the current output type)].
and the PV display blinks [(* In the case the scale has a decimal point.)(Underscale)
When the input value falls to [Rated scale minimum value –50] or less, thecontrol output is turned OFF (main output low limit value for the current outputtype), and the PV display blinks [].
For the RTD input, if the input falls to [Rated scale minimum value –1(or –19.9–0.1*)] or less, the control output is turned OFF, and the PV display
blinks [] (main output low limit value for the current output type).
(* In the case the scale has a decimal point.)(2) Self-diagnosis
The CPU is monitored by a watchdog timer, and when any abnormal status isfound on the CPU, the controller is switched to warm-up status.
(3) Automatic cold junction temperature compensation (Thermocouple input type)This detects the temperature at the connecting terminal between thethermocouple and the instrument, and always keeps it set to the same status
at which the reference junction is located at 0 [32 ].

27

MOUNTING TO CONTROL PANEL

GCM-200

8. Mounting to control panel

8.1 Site selection
This instrument is intended to be used under the following environmental conditions(IEC61010-1): Overvoltage category , Pollution degree 2

Mount the controller in a place with:(1) A minimum of dust, and an absence of corrosive gases(2) No flammable, explosive gasses(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 suddenly(5) An ambient non-condensing humidity of 35 to 85%RH(6) The controller away from large capacity electromagnetic switches or cables
through which large current is flowing(7) No water, oil or chemicals or where the vapors of these substances can comeinto direct contact with the controller
8.2 External dimension drawing
PV

OUT1

OUT2

HB
AT

SV

A1

A2

MODE

OUT
OFF

GCM

[Fig. 8.2-1]
8.3 Panel cutout drawing

Lateral close mounting
n: Number of units mounted[Fig. 8.3-1]
28

MOUNTING TO CONTROL PANEL

GCM-200

8.4 Current transformer (CT) dimension drawing

CTL-6-S (for 20A)

CTL-12-S36-10L1 (for 50A)
[Fig. 8.4-1]

8.5 Mounting
Mounting panel thickness is 1 to 15mm.
Insert the GCM-200 from the front of the panel.
Slot the mounting bracket to the holes at the top and bottom of the case,and screw in place.

NoticeAs the case is made of resin, do not use excessive force while screwing in
the mounting bracket. The torque is approximately 0.12N•m.

Up
Up

1

OUT

2

OUT

HB

AT

A1

PV
A2

SV
OUT

OFF

DE

MO

M

GC

29

WIRING CONNECTION

GCM-200

9. Wiring connection

Warning
Turn the power supply to the instrument off before wiring or checking.
Working or touching the terminal with the power switched on may resultin Electric Shock which could cause severe injury or death.
Moreover, the instrument must be grounded before the power supply to the
instrument is turned on.
9.1 Terminal arrangement
Heater burnout alarm (HB) [W] or[A2] (when D is applied)(including sensor burnout alarm)
1

8

15

2

9

16

24Vdc 3100 to 240Vac 3
or 24Vac

1017 Alarm 2 [A2] or

4

4

11

Ground2

PowersupplyAlarm 1 (A1)
outputCooling output(OUT2)
18 DR, DS, DA

CT input

H 5
Main output
Heating output(OUT1)
C 6
-R/
-S/
-A/

6
7

12

19

B 19

13

20

B 20

・

L 7

21

TC

A 21

・
RTD

[Fig. 9.1-1]

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 fastenedwith the terminal screw.
Dotted lines shows options, no terminal is equipped if it is not specified.
Use terminals 17-18 when only the option [A2] is applied.
When the option [A2] and [W] are applied together, use terminals 17-18 for the
option [A2] and terminals 8-9 for the option [W].
When the option [D ] and [A2] are applied together, use terminals 17-18 forthe option [D ] and terminals 8-9 for the option [A2].

30

WIRING CONNECTION

GCM-200

n Solderless terminal
Use a solderless terminal with insulation sleeve to fit to the M3 screw as shown below.
3.2mm

5.8mm or less

5.8mm or less

3.2mm

Solderlessterminal
Y typeRound type

Manufacturer

Model name

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

1.25Y-3
VD1.25-B3A
1.25-3
V1.25-3

Tightening torque
0.6N•m (6kgf•cm)
Max. 1.0N•m (10kgf•cm)

9.2 Wiring connection examples

Notices• 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 thiscontroller.
• This controller has neither built-in power switch nor fuse. Therefore it isnecessary to install them in the circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V, rated current 2A)• When using 24Vdc of power source, do not confuse the polarity.
• For the relay contact output type, externally use an auxiliary electromagnetic
switch according to the capacity of the load to protect the built-in relay contact.
• When wiring, keep the input wire (Thermocouple, RTD, etc.) away from ACsource and the load wire to avoid external interference.
• Use a thick wire (1.25 to 2.0mm ) for the earth ground.
2

Heater burnout alarm output [Option code: W](1) This alarm is not available for detecting
heater current under phase control.
(2) Use the current transformer (CT) provided,CTand pass one lead wire of heater
circuit into the hole of the CT.
(3) When wiring, keep CT wire away fromAC source and load wire to avoid theinterference from external.

Heater31

11
12

CT input terminals

Power source

WIRING CONNECTION

GCM-200[GCM-23A-R/E]
3-phase100 to 240V AC
or 24V AC/DCPower supply for
Alarm unit
Ground1

Electromagnetic
switch

2

8
9

3

10

17

4

11

18

5
6

12

19

13

20

7

14

21

15
16

Alarm unit (forTemperature alarm)

Heater
Thermocouple
Electric furnace[Fig. 9.2-1]* To prevent the unit from harmful effects of unexpected level noise, it isrecommended that a surge absorber be installed between the electromagnetic
switch coils.
[GCM-23A-S/E, W]
Single-phase

Alarm unit (for Heaterburnout alarm)
Ground
24V
CT

SSR

1

8

15

2

9

16

3

10

17

4

11

18

5

12

19

6

13

20

7

14

21

Thermocouple
HeaterElectric furnace[Fig. 9.2-2]
The connectable SSRs in parallel are 4 units if the Shinko SSRs
(SA-200 series) are used.
AC or DC is available to supply voltage 24V, however, do not confuse
the polarity when DC is applied.
32

SPECIFICATIONS

GCM-200

10. Specifications
10.1 Standard specifications
Mounting method: FlushSetting: Input system using membrane sheet key
Display
PV display: Red LED display 3 digits, size 8(W) x 14.3(H)mm
SV display: Green LED display 3 digits, size 5.5(W) x 10(H)mm
Accuracy (Indication and setting):
Within 0.3% of maximum scale range 1digit, orwithin 2 (4 ), whichever is greater
Input sampling period: 0.25 seconds(When the option [W] is applied, 0.5 seconds)
Input
Thermocouple: K, J or E
External resistance, 100 or less
RTD
: Pt100, JPt100, 3-wire system
Allowable input lead wire resistance,
10 or less per wire
Control output
Relay contact: 1a1bControl capacity,
250Vac 3A (resistive load)
250Vac 1A (inductive load cosø=0.4)
Non-contact voltage : For SSR drive
12+20Vdc maximum 40mAdc (short circuit protected)
Current: 4 to 20mAdc
Load resistance, maximum 550
Temperature alarm 1 (A1) output
Action: ON/OFF action
Hysteresis setting range: 0.1 to 99.9 ( )Output: Relay contact 1aControl capacity, 250Vac 3A (resistive load)
250Vac 1A (inductive load cosø =0.4)
Controlling action
PID action (with auto-tuning function)
Proportional band (P) : 0 to 999 ( ) (ON/OFF action when set to 0)
0.0 to 99.9 (ON/OFF action when set to 0.0)
Integral time(I) : 0 to 999s (PD action when set to 0)
Derivative time(D) : 0 to 300s (PI action when set to 0)
Proportional cycle: 1 to 120s
33

SPECIFICATIONS

GCM-200

PD action (with auto-reset function)
Proportional band (P): 0 to 999 ( ) (ON/OFF action when set to 0)
0.0 to 99.9 (ON/OFF action when set to 0.0)
Derivative time(D): 0 to 300s (P action when set to 0)
Proportional cycle : 1 to 120s
ON/OFF action: Hysteresis, 0.1 to 99.9 ( )Supply voltage: 100 to 240Vac 50/60Hz, 24Vac/dc 50/60Hz
Allowable voltage fluctuation
100 to 240Vac : 85 to 264Vac
24Vac/dc: 20 to 28Vac/dc
Ambient temperature: 0 to 50 (32 to 122 )Ambient humidity: 35 to 85%RH (non-condensing)Power consumption: Approx. 8VA
Insulation resistance: 10M or greater at 500Vdc(When the type of main output or cooling output is current or non-contact voltage
output, insulation test must not be carried out between output terminal and input
terminal or between output terminal and CT input terminal.)
Dielectric strength
Between input terminal and ground terminal, 1.5kVac for 1 minuteBetween input terminal and power terminal, 1.5kVac for 1 minuteBetween power terminal and ground terminal, 1.5kVac for 1 minuteBetween output terminal and ground terminal, 1.5kVac for 1 minuteBetween output terminal and power terminal, 1.5kVac for 1 minute
Weight: Approx. 250g
External dimension : 72 x 72 x 100mm (W x H x D)
Material: Base and Case, Flame resistant resin
Color: Base and Case, Light gray
Attached functions : Control output OFF function
Setting value lock function
Setting value limiting function
Sensor correction function
Power failure countermeasureSelf-diagnosis function
Automatic cold junction temperature compensating function
Sensor burnout function [overscale, underscale]
Accessories: Mounting bracket
1 set
Instruction manual
1 copyCurrent transformer 1 piece(CTL-6-S)[When the option W (20A) is applied.](CTL-12-S36-10L1) [When the option W (50A) is applied.]
Terminal cover
1 piece [When the option TC is applied.]34

SPECIFICATIONS

GCM-200

10.2 Optional specifications
Temperature alarm 2 (A2) output [Option code: A2]
The alarm action point is set by deviation to main setting (except Process value
alarm). When the input exceeds the range, the output turns ON or OFF(in the caseof High/Low limit range alarm).
Setting accuracy : Within 0.3% of maximum scale range 1digit, orwithin 2 (4 ), whichever is greater
Action: ON/OFF action, Hysteresis, 0.1 to 99.9 ( )Output: Relay contact 1aControl capacity, 250Vac 3A (resistive load)
250Vac 1A (inductive load cosø=0.4)
Heater burnout alarm output (Including sensor burnout alarm)[option code: W]
Watches the heater current with CT (current transformer), and detects theburnout. (This option cannot be applied to the current output type.)
When the option [W] is applied, the input sampling period is 0.5 seconds.
Rating: 20A [Option W (20A)] or
50A [Option W (50A)], Must be specified
Setting accuracy : 5%
Action point: Setting value
Action: ON/OFF action
Output: Relay contact 1a (No self-holding)Control capacity, 250Vac 3A (resistive load)
250Vac 1A (inductive load, cosø=0.4)
Heating/Cooling control output [option code: D ]The specifications of heating side are the same as those of the Main output.
Cooling side proportional band: Multiplying factor to the heating side proportionalband is 0.0 to 10.0.
(ON/OFF action when setting the value to 0.0.)
Cooling side proportional cycle: 1 to 120s
Overlap/Dead band setting range: (0 to 100%) of the Heating proportional bandOutput[DR] Relay contact 1aControl capacity, 250Vac 3A (resistive load)
250Vac 1A (inductive load cosø=0.4)[DS] Non-contact voltage (for SSR drive)+2
12 0 Vdc maximum 40mAdc (short circuit protected)[DA] Current
4 to 20mAdc
Load resistance: Maximum 550
Cooling action mode selection function:
Key selectable, Air cooling (Linear characteristic), Oil cooling (1.5th powerof the linear characteristic) or Water cooling (2nd power of the linear
characteristic).
35

SPECIFICATIONS

GCM-200

Multi-range [option code: MR]or
A sensor type can be selected from K, J, E, Pt100 or JPt100, and the unit
is selectable.
Color black [option code: BK]
Front panel : Dark grayCase
: Black
Terminal cover [option code: TC]
Electrical shock protecting terminal coverDust-proof•Drip-proof [option code: IP]
Dust-proof and Drip-proof specification (IP54)
Effective for only panel surface, case part is excluded.
To protect the controller from water leak between the control panel and controller,
take note of the following.
(1) Use the screw type mounting bracket.
(2) The panel cutout dimension should be proper and have no burrs.
(3) The control panel surface to be mounted should be vertical.
Front cover FC-72-S (soft type, sold separately) is recommended to strengthen the
Dust-proof and Drip-proof specification.

Up

1

OUT

2

OUT

HB

AT

A1

PV
A2

SV
OUT

OFF

DE

MO

M

GC

Designated specifications
Scale range: Shipped as designated scale range
Alarm action: Shipped as designated alarm action (A1, A2)
Cooling action: Shipped as cooling action
Control action: Shipped as PD or ON/OFF action
Hysteresis: Shipped as designated hysteresis

36

TROUBLESHOOTING

GCM-200

11. Troubleshooting
If any malfunctions occur, refer to the following items after checking thepower and the wiring.

Warning
Turn the power supply to the instrument off before wiring or checking.
Working or touching the terminal with the power switched on may
result in an Electric Shock which could cause severe injury or death.
<Indication>
Phenomena
If the PV display is
indicating [
].

] is
If [
blinking on the
PV display.

If [
] is
blinking on the
PV display.
If indicationof PV display
is abnormal or
unstable.

Presumed cause and solution• Control output OFF function is working.
Press thekey for approx. 1s to release
the function. (page 17)• Thermocouple or RTD is burnt out.
[In the case of Thermocouple]
If the input terminal of the instrument isshorted, and if nearby room temperature isindicated, the instrument should be normal
and the sensor may be burnt out.
[In the case of RTD]
If approx. 100 of resistance is connectedto the input terminal between A-B of the
instrument and between B-B is shorted, andif nearby 0 (32 ) is indicated, theinstrument should be normal and the sensor
may be burnt out.
• Lead wire of thermocouple or RTD is not securely
mounted to the instrument terminal.
• Polarity of thermocouple or compensating lead wireis reversed.
• Codes (A, B, B) of RTD do not agree with the
instrument terminal.
• Designation of the Sensor input is improper.
Set the Sensor input properly (page 8).
) is mistaken.
• Temperature unit ( or• Sensor correcting value is unsuitable.
Set the value suitably. (page 13)• Specification of the Thermocouple or RTD is improper.
• AC may be leaking into thermocouple or the RTD
circuit.
• There may be an equipment producing an inductive
fault or noise near the controller.
37

TROUBLESHOOTING<Key operation>
Phenomena
If settings are
impossible.
If the value does
not change by the,
keys.

GCM-200

Presumed cause and solution• Setting value lock (mode 1 or 2) is designated.
Release the lock designation. (page 13)• During PID auto-tuning
Cancel the tuning if necessary. (page 9)• During auto-reset(It takes approx. 4 minutes until auto-reset is finished.)
If the setting indication • Main setting value high limit or low limit may be
set at the point the value does not change.
does not change in
Set it again in the Auxiliary function setting mode.
the rated scale range,
even if thekeys are pressed, andsettings are impossible.
<Control>Phenomena
Presumed cause and solution• Thermocouple or RTD is burnt out.
[In the case of Thermocouple]
If the input terminal of the instrument is connected,
and if nearby room temperature is indicated, theinstrument should be normal and sensor may beburnt out.
If process variable[In the case of RTD]
(temperature) does
If approx. 100 of resistance is connected to the
input terminals between A-B of the instrument andnot rise.
between B-B is shorted, and if nearby 0 (32 )is indicated, the instrument should be normal andsensor may be burnt out.
• Lead wire of thermocouple or RTD is not securely
mounted to the instrument terminal.
If the main output• Main output low limit setting value is set to 100%
remains in ON status.
or greater.
Set the value appropriately. (page 14)
If the cooling output• Cooling output low limit setting value is set to 100%
remains in ON status.
or greater.
Set the value appropriately. (page 15)
If the main output• Main output high limit setting value is set to 0% or
remains in OFF
less.
status.
Set the value appropriately. (page 14)
If the cooling output• Cooling output high limit setting value is set to 0% or
remains in OFF
lessstatus.
Set the value appropriately. (page 14)
If any unexplained malfunctions occur other than the above mentioned, makeinquiries at our agency or the shop where you purchased the unit.
38

CHARACTER TABLE

GCM-200

12. Character table[Main setting mode]
Character
Description
Main setting

Initial value( ) or 0.0

Data

Initial value
CancelData

0[Sub setting mode]
Character
Description
Auto-tuning Perform/Cancel
Auto-reset
Main proportional band
Cooling proportional band
Integral time setting
Derivative time setting
Main proportional cycle
Cooling proportional cycle
Alarm 1 (A1) setting
Alarm 2 (A2) setting
Heater burnout alarm setting[Auxiliary setting mode]
Character
Description
Setting value lock designation
Main setting value high limit
Main setting value low limit
Sensor correction setting
Main output high limit setting
Main output low limit setting
Main output ON/OFF action hysteresis
Cooling action mode selection
Cooling output high limit
Cooling output low limit

Available for PD action
10(20 ) or 10.0

1.0 times
200s
50s
R/ : 30s, S/ : 3s
R/ : 30s, S/ : 3s
0 ( ) or 0.0
0 ( ) or 0.0
0A

Initial value
UnlockRated scale max. value
Rated scale min. value

Cooling output ON/OFF action hysteresis

0 ( ) or 0.0
100%0%
1.0 ( )
Air cooling (Linear)
100%0%1.0 ( )

Overlap band/Dead band setting
Sensor selection
Temperature alarm 1 (A1)
Temperature alarm 2 (A2)
Temperature alarm 1 (A1) hysteresis
Temperature alarm 2 (A2) hysteresis
Heating/Cooling selection

Specified input
No alarm action
No alarm action
1.0 ( )
1.0 ( )
Heating (reverse)

39

Data

***** Inquiry*****

For any inquiries about this unit, please contact the shopwhere you purchased the unit after checking the following.

• Model --------------------------• Type of input -----------------• Option --------------------------• Instrument number ----------[Example]
GCM-200-R/E
KA2, W(20A)
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

Reg. Office : 2-48, 1-Chome, Ina, Minoo, Osaka, Japan
Mail Address : P.O.Box 17, Minoo, Osaka, JapanURL: http://www.shinko-technos.co.jp
E-mail: overseas@shinko-technos.co.jp

Tel : 81-727-21-2781
Fax: 81-727-24-1760

No. GCM21E540

2001.07