Please be sure to hand this instruction manual to the final user.

For SUPER HEATER

Temperature Control Unit TCU series
MANUAL●Please be sure to read before use.
◆ Thank you for purchasing the TCU series temperature control unit.
◆ Check the name plate of the main unit to see if the model, product number, and voltage are thesame as the product you ordered.

１． Precautions for use
２． Installation
３． Power Supply
４． Wiring
５． Terminal structure / arrangement
６． Maintenance and inspection
７． Names and functions of each part
８． Service Terminal
９． Normal Operation
１０． Shut down
１１． Hot Start operation
１２． Timer operation / stop
１３． When using an external sensor
１４． When using external operation
１５． When using the cooling operation function
１６． Unlock
１７． When setting a temperature alarm
１８． Output terminal function setting
Temperature control unit TCU series
・ ＴＣＵ８Ｋ

１９． Anomaly detection
２０． When using a remote controller

・ ＴＣＵ１２Ｋ
・ ＴＣＵ２０Ｋ

Electrical connection diagram
The contents of this instruction manual are subject
to change without notice. In addition, the figures
and indications in the instruction manual do notguarantee the actual specifications. It is prohibitedto modify or copy this instruction manual without
the permission of the manufacturer.

KANSAI ELECTRIC HEAT CORP.

１．Precautions for use ※Please be sure to check before use.
To use the temperature control unit without any
trouble◆ Describes important precautions that have caused failures that have occurred in the past. Please check itwith your company's usage.
●

Installation location of the temperature control unit If the atmosphere contains dust,
dust, conductive suspended matter such as carbon fiber, oil, oil smoke, oil mist,
moisture, and water vapor, if they adhere to or mix inside the temperature control
unit. It may lead to the failure of the temperature control unit.

● It cannot be used in flammable gas, flammable gas, plating or corrosive

atmosphere environment. Please contact us in advance.
● Input terminals 1 to 5 will break down when voltage is applied. In addition, output

terminals 6 to 9 will break down if a voltage higher than the rating is applied.
● Do not connect or bind the service terminal wiring to the AC power line, power line,or harmonic line. Noise will damage internal electronic devices.
●●

Do not stop the operation of the temperature control unit with an electromagnetic
contactor provided on the primary side of the temperature control unit. The surge
voltage damages internal electronic devices.
Induced lightning surges caused by lightning strikes can lead to accidents such as
damage to the temperature control unit, malfunction, or fire. When using thetemperature control unit in a place that may be affected by lightning strikes, besure to take measures against lightning strikes by installing an arrester (lightning
arrester).

● Be sure to use a commercial power supply (50 / 60Hz) with a sinusoidal waveform as
the power supply for the temperature control unit. Never use a power supply from afrequency converter, etc. that has a distorted wave containing harmonics. Internal
electronic devices may be damaged by harmonics, noise, etc.
● Periodically clean the cooling fins and exhaust fan (TCU20K only) of the SSC (heater
control element) inside the temperature control unit. If dust collects on the cooling finsand exhaust fan of the SSC, the cooling efficiency of the SSC will decrease and it may
cause a malfunction.
● Keep the breaker (NFB) of this machine ON at all times, and do not turn it ON /OFF as an operation switch. The surge voltage damages internal electronic devices.

－１－

２．Installation① This unit is for installation or rear mounting only. Be sure to install it horizontally with the operation surface vertical. The main bodyfixing brackets (2 pieces) are enclosed in the instruction manual bag at the time of shipment. If necessary, install it at the installation
position and back position (4 mounting screws are installed at the main unit installation position).

Also, attach the breaker cover (red: enclosed in the
instruction manual) to the long holes on the top andbottom of the main body breaker (be sure to attach
the breaker cover to prevent ON / OFF of the main
body breaker as an operation switch).

② For installation, refer to the figure on the rightand secure a sufficient mounting space.
In particular, the space on the back of the machine(35 mm or more) is an important space for cooling theinside of the machine regardless of whether it isinstalled or mounted on the back.Also, do not install
this unit in a place such as the upper part of the heatgenerating part that may cause the temperature to
rise.

Installation position
Fixing bracket mounting③ Places that cannot be installed Place with…

Back position
Fixing bracket mounting

・Place with vibration

・Places with conductive suspended matter (carbon fiberetc.)

・Places above 1000m above sea level

・

Near combustibles

・acid gas, corrosive gas, etc. are floating

・Places with low atmospheric pressure

・

Ambient temp other than -5 to＋ 40℃

・

ambient humidity of 85% R.H. or higher

・Upper part of heat generating part・

ambient humidity of 85% R.H. or higher

・back side is in close contact with a wall, etc.

・Places with a lot of dust, dust, etc.

・In a closed room and in a case・Places exposed to wind and rain outdoors

３．POWER SUPPLY① Ask an electrician for power connection and grounding work
② Be sure to use a commercial power supply (50 / 60Hz) with a sine wave waveform as the power supply forthis unit. Never use a power supply that has distorted waves containing harmonics. Also, take sufficientmeasures to prevent surge voltage and noise from entering the power supply.
③ Please provide a dedicated circuit. When installing an earth leakage breaker, determine the capacity of the sensitivity current according to the tablebelow (generally, the sensitivity current of the earth leakage breaker is about 10 times the initial leakage current).

MODEL
ＴＣＵ８Ｋ・１２Ｋ
ＴＣＵ２０Ｋ④

Earth Leakage Circuit Breaker (ELB) Sensitivity Current Guide

５０ｍＡ
１００ｍＡ

To prevent electric shock accidents, perform grounding work (300V or less: D-class grounding, 600V or
less: C-class grounding).
注意

Please note that wiring that is too long will cause a voltage drop.

注意

Be sure to shut off the power supply during wiring and inspection. Even if the breaker (NFB) of the main body of the temperature control unit is turned off, theoperation circuit is still energized, so be sure to turn off the factory power supply (primary power supply). If you work with the power turned on, you will get an
electric shock.

注意

If you provide an outlet for the connection, ensure sufficient capacity. Please refrain from using the outlet as much as possible because theoutlet may generate heat or break down due to poor contact due to deterioration over time, phase loss, etc.

注意

The temperature control unit is a device mainly used in the industrial environment. When used in a residential environment, etc., there is arisk of radio interference. At that time, the user of this product may have to take appropriate measures to reduce the obstacle.

４.WIRING① Ask an electrician for wiring.
② Please reconfirm the control capacity of the TCU series and the capacity of the super heater you purchased.
③ Since the terminal structure, terminal arrangement, etc. of the TCU series differ depending on the model, check the model you
purchased and make sure to wire according to this manual and the instruction manual of the super heater and blower unit.

④ For wiring, use the three entry holes on the underside and both sides of the machine. When entering from both sides,
replace the entry plate on the bottom surface and the side panels on both sides.

⑤ Be sure to use the attached heater cord and sensor cord for wiring with the super heater. The sensor cord comes witha wire board for the super heater, so replace it with the wire board for the super heater.
Atten

Only use the attached heater cord and sensor cord for wiring with the super heater. It may cause a malfunction.

Atten

Do not pass the sensor cord through the same duct as the AC power line, power line, and harmonic line, and do notconnect adjacent wiring or bundling. If it is affected by noise, it may cause a malfunction.

Atten

If hot air operation is performed without wiring the sensor connector and blower unit error input connector, the heater will break.

－２－

５．Terminal structure /Terminal arrangement
TCU8K・12K《SUPER HEATER : ＳＨ４１・ＳＨ５１・ＳＨ６１》
ＴＣＵ８Ｋ： 3 phase Less than ８ｋＷ・ ２５Ａ
ＴＣＵ１２Ｋ ： 3 phaseLess than１２ｋＷ・ ３５Ａ
Blower vol. Less than ３．７ｋＷ

Heater control capacity ・ Maximum load current（at ２００Ｖ）
Blower （Max controllable motor capacity）（It is set to the blower specifications that we instructed when ordering.）

service terminal

Heater output terminal

Blower output terminal

screw size Ｍ３．５

screw size Ｍ４screw size Ｍ５（Tightening torque：1.4N・m）（Tightening torque：1.8N・m）（Tightening torque：3.0N・m）

Blower error input connector

E UB VB WBＥPower input terminal

screw size Ｍ６（Tightening torque：3.7N・m）

SENSOR CONNECTOR

U

V

W

Blower output terminal

Heater input terminal

Connect to the power supply
terminals UB / VB / WB andground terminal E of the blower
unit FH series.
※ When connecting to theblower unit, use the power
cord that came with theblower unit.
※ If you prepare a blower,
connect the power line andground wire of the blower.
Only the blower specified to
us at the time of ordering canbe connected.

Connect to the heater power
supply terminals U / V / W andground terminal E of super heaters
SH41 to 61.
※
Use the attached heater cord.
※ If you prepare the wires,consider the voltage dropwhen sizing the power supply.
（applied wire less than 5m
SH41：2㎜2 SH51：3.5㎜2
SH61：5.5㎜2）※ Determine the size of the power

E

R

S

T

Power input terminal
Supply the original power supply(factory power supply).

※ Determine the size ofthe power supply inconsideration of thevoltage drop.

Sensor input connector（９Ｐ）
Connect to the sensor connector of Super Heater
SH41-61.
※ Use the attached sensor code.
※ A wire board for SH41-61 is attached to thesensor code.

supply in consideration of thevoltage drop.

（applied wire less than 1.25～2㎜2
blower less than 3.7kW

Blower unit error input connector（３Ｐ）
Connect the pressure signal cord attached to the blower units FH50 and FH60.
※ If you are using the blower unit FH30, FH40, or if you are using the blower prepared by
the customer, wiring to this connector is not required.

Be sure to connect the blower unit FH series or the blower prepared by the customer to theblower output terminal. Operating without connection may cause a heater disconnection or afire.
● Wire the sensor and input / output signal terminals separately from the AC power line, power line, and harmonicline to avoid malfunction due to noise, etc. (shield processing is recommended).

Please refer to the wiring electrical diagram at the end of the book for wiring examples.

－３－

TCU20K《SUPER HEATER : ＳＨ７１》

Heater control capacity ・ Maximum load current（at ２００Ｖ）

lower （Max controllable motor capacity）

3 PHASE LESS THAN ２０ｋＷ ・ ５８Ａ
Blower vol. Less than ３．７ｋＷ（It is set to the blower specifications that we instructed when ordering.）

service terminal

Heater output terminal

Blower output terminal

screw size Ｍ３．５

screw size Ｍ４screw size Ｍ５（Tightening torque：1.4N・m）（Tightening torque：1.8N・m）（Tightening torque：3.0N・m）

screw size Ｍ６（Tightening torque：3.7N・m）

SENSOR CONNECTOR

Blower error input connector

E UB VB WBPower input terminal

E U1 V1 W1 U2 V2 W2

Blower output terminal

Heater input terminal

Connect to the power supply
terminals UB / VB / WB andground terminal E of the blower
unit FH series.
※ When connecting to theblower unit, use the power
cord that came with theblower unit.
※ If you prepare a blower,
connect the power line andground wire of the blower.
Only the blower specified to
us at the time of ordering canbe connected.

Connect to the heater power
supply terminals U1, V1, W1, U2,
V2, W2, and ground terminal E of
the super heater SH71.
※ Use the attached sensor
code.
※ If you prepare the wires,consider the voltage dropwhen sizing the power supply.
（applied wire less than 5m
5.5㎜2）E

R

S

T

Power input terminal
Supply the original power supply(factory power supply).

※ Determine the size ofthe power supply inconsideration of thevoltage drop.

Sensor input connector（９Ｐ）
Connect to the sensor connector of Super Heater
SH71※ Use the attached sensor code.
※ A wire board for SH71 is attached to thesensor code.

※ Determine the size of the power
supply in consideration of thevoltage drop.

（applied wire less than 5m
1.25～2㎜2 blower less than
3.7kW

Blower unit error input connector（３Ｐ）
Connect the pressure signal cord attached to the blower units FH50 and FH60.
※ If you are using the blower unit FH30, FH40, or if you are using the blower prepared by
the customer, wiring to this connector is not required.

Be sure to connect the blower unit FH series or the blower prepared by the customer to theblower output terminal. Operating without connection may cause a heater disconnection or afire.
● Wire the sensor and input / output signal terminals separately from the AC power line, power line, and harmonicline to avoid malfunction due to noise, etc. (shield processing is recommended).

Please refer to the wiring electrical diagram at the end of the book for wiring examples.

－４－

６．Maintenance and inspection
TEST BUTTONThis is a test button to check if the breaker(NFB) of the main unit trips normally whenoverheating. Once a month, press the test button
for a few seconds while the operation is stopped(while the power is on), and check the overheat
lamp lighting, overheat operation display (seepage 22), and the trip operation of the circuit
breaker (NFB) of the main unit.

After checking, turn off the main power supply(factory power supply) and the main circuit
breaker (NFB), and then turn them on again.

Inspection and cleaning
Regularly clean the cooling fins and exhaust fan (TCU20K only) of the SSC (heater control element) inside
the TCU series. If dust collects on the cooling fins and exhaust fan (TCU20K only) of the SSC, the cooling
effect of the SSC will be reduced and it may cause a malfunction.

Storage
When storing the temperature control unit for a long period of time, be careful of condensation and freezing. Especiallyin winter, condensation occurs when the temperature of the storage atmosphere drops. If it is stored at a lowtemperature with dew condensation, it will freeze and cause malfunction of electrical parts.

Voluntary inspection
In order to use this machine more safely, we recommend that you carry out a self-inspection if the usage
period exceeds 10 years.
【Self-inspection items】
・ Measurement of insulation resistance value ・ Inspection and cleaning of foreign matter inside the operation panel
・ Tightening inspection of each terminal block ・ Operation of electrical parts and heat generation inspection
・ Other visual inspection※ For self-inspection, ask the nearest electrician.
ATTEN: ： Never perform the insulation withstand voltage test of this machine (already performed at thetime of shipment). It may cause a malfunction.

◆ About energized fire
The temperature control unit automatically resumes operation before the momentary power failure by turning on
the main power again within 1 second after a momentary power failure such as a power failure. Therefore, inorder to prevent energizing fires, it is recommended to install a device that shuts off the primary power supply inthe event of a disaster such as an earthquake.

For the setting method, access our website http://www.kansaidennetsu.co.jp↓
Technical data↓
See "How to deal with energized fires" in the technical data.

－５－７．Names and functions of each part
CONTROL PANEL

⑪
⑫

⑩
⑦
⑧
②
①

⑬

⑨
④
⑤

③
⑥

⑭
⑮

⑱
⑰

⑯

① STOP SWITCH⑨ TIMER SETTING DISPLAY

for stopping the blower operation and hot air operation,and for canceling the timer operation.

② HOT-AIR SWITCH

Displays the set time of the timer. It will be subtracted
by the time count.

⑩ HEATER LAMPThe ON / OFF status of the heater is displayed by lighting and blinking.

Press the switch to start hot air operation. When theoperating condition is switched to hot start operation,
hot start operation is started by pressing the modeswitch at the same time.

⑪ TEMP ALARM LAMP
If the temperature alarm setting is entered, it lights up when thetemperature alarm setting value is reached.

③ BLOW SWITCH
Press the switch to start the blower operation.

⑫ EXTERNAL TEMP CONTROL LAMP
Not used in this machine.

④ TIMER OPERATION SWITCH⑬ EXTERNAL SENSOR LAMP

When you press the switch, you can set the time to start
operation after a while. After setting, press the hot air switch.

Lights when the operating conditions are switched to an external sensor.

⑤ TIMER STOP SWITCH⑭ OVERHEAT LAMP

When you press the switch, you can set the time to stop theoperation after a while. After setting, press the hot air switch.

It lights up when the inside of the heater case becomesabnormally high temperature, and the breaker (NFB) trips.

⑥ EXTERNAL OPERATION SWITCH⑮ TEMP WARNING LAMP
Lights up when the discharge temperature is high or thesuction temperature exceeds the allowable temperatureof the blower, and the circuit breaker (NFB) trips or
blower operation is performed.

By pressing and holding the switch (2 seconds), it can be
operated by the external operation signal and the external
heater on / off signal.

⑦ HOT-AIR TEMP DISPLAY⑯ BLOWER WARNING LAMP

Displays the outlet temperature. When the operating conditionis switched to the external sensor, the temperature of theexternal sensor is displayed.

When the blower is overloaded, it lights up and the operation stops.

⑧ SET TEMP DISPLY DISPLAY⑰ TEST BUTTONThe breaker (NFB) trips by pressing the button.

Displays the set temperature of the discharge port
temperature. When the operating condition is switchedto the external sensor, the set temperature of theexternal sensor is displayed.

⑱ MODE SWITCH
It is used when changing the operating conditions.

－６－

MODEL ： TCU20K

Body fixing bracket(For both installation and back mounting)control panel① Reversed phase lamp
② Breaker for final safety circuit(Voltage trip device)

Power input terminal

Sensor connector

For super heater connection
Heater code, sensor code
(Standard 5m)
Service
Terminal

Entrance hole
(3 directions, lower
surface and both sides)

Blower unit
Abnormal input connector
Blower output terminal
Heater output terminal① Reversed phase lamp
This lamp lights up when the primary power supply is out of phase or the T phase of the primary power supply is out of phase. If it lights up,
replace the two wires of the primary power supply or check for interruption due to T-phase disconnection.

② Circuit breaker for final safety circuit
A breaker that trips when the safety circuit is activated and cuts off all circuits. This breaker should always be on and should
not be turned on / off as an operation switch.

－７－８．Service Terminal● The temperature control unit TCU series is equipped with service terminals for external input
and external output.（Ｍ３．５ １０Ｐterminal Upper tightening torque：１．４Ｎ・ｍ）《Input Terminal》

Terminal ４－５ ： External Sensor Input terminal
Connect to terminal K + → 4 and K- → 5 of the externalsensor [K].
Terminal ３ ：Input Common Terminal
Input common for external operation on / off terminal 1 and external
heater on / off terminal 2.
Terminal ２ ： External heater on / off terminal
It is used when turning on / off the heater (normal operation, hot start) with an externalsignal. The input is compatible with contact output (terminal voltage DC24V 7mA or less).

Terminal １ ： External operation on / off terminal
It is used when starting / stopping with an external signal. The input is compatible
with contact output (terminal voltage DC24V 7mA or less).

《Output Terminal》
Contact Capacity more than ＤＣ５Ｖ １０ｍＡ以上、ＤＣ３０Ｖ １Ａ（non-voltage contact signal output）

Terminal ６－７－８ ： Output Terminal
Contact Output（Internal Relay）
It is a terminal that turns on when the output function set by the output terminal function is activated.

（Select one of the three output functions from blow, heater, operation,
abnormality, and temperature alarm.）※ 出力端子機能の設定は、P.20をご参照ください。

Terminal ９ ： Output Common Terminal
for Output Terminal ６、７、８ output common （Output common total less than ３Ａ）。

Attn

： When using the service terminal, be sure to shut off the main power supply before wiring. You will get an electric shock if
you wire while the power is on. Also, be sure to attach the terminal cover after wiring.

Attn： When wiring the service terminal, avoid wiring and binding adjacent to the AC power line, power line,
and harmonic line.

－８－９．Normal Operation （Hot-Air Operation）① Turn on the factory power supply (primary power supply).

② Turn on the breaker (NFB) of the main unit.

The stop lamp (green) lights up, and "nFb" flashes in the hot air
temperature section and "oFF" flashes in the set temperaturesection.

※ It cannot be operated in this state.

When you press the blower switch, the blower③ lamp (green) lights up and the blower operation
starts.

The current temperature is displayed in the hot air temperaturesection, and "0" is displayed in the set temperature section (during
the first operation).

※ From the second time, the previously set value will be
displayed in the set temperature section.

④ Use the up and down keys to set any hot air
temperature.

※ It can be set in minuites with the up and down keys.

⑤ When you press the hot air switch, the hot air lamp (orange) lights up and hot air operation starts.
The heater lamp (green) lights up and blinks the ON /OFF status of the heater.
If the hot air temperature does not rise to the set
temperature, adjust by reducing the supply air
volume.

If normal operation is performed when the blower unit
FH series is not used or when the blower circuit is
not connected to the temperature control unit TCU
series, the super heater will be heated empty andmay cause a heater disconnection or fire.

－９－

１０．Shut down
● To stop the super heater during normal operation, press the stop switch.
Also, if you do not use the super heater for a long time, turn off the factory power supply side as well.

① Press the stop switch.

② If you do not use the super heater for a long time, turnoff the power supply on the factory side.
All displays turn off.

The stop lamp (green) lights up and all operations are stopped.

※ It is not necessary to turn off the breaker (NFB) of the mainbody.

If the residual heat of the main unit flows back when the operation is stopped, be sure to perform thecooling operation until the temperature of the A sensor for hot air detection of the super heater
becomes about 70 ° C or less, and then press the stop switch to stop the operation.
* Use the cooling operation function on page 17 if necessary.

※ Be sure to stop with the stop switch before turning off the factory power supply or the breaker of the main unit. If the factory power supply or the
breaker of the main unit is turned off without stopping with the stop switch while the super heater is operating, it may cause a malfunction.

※ If the breaker of the main unit is turned off and then turned on again while the super heater is being operated or stopped by external
operation, the external operation mode will be canceled. If the power is cut off while using in the external operation mode, be sure toturn it off with the factory power supply (primary power supply) (the external operation mode is maintained when the factory power
supply is turned on again).

Do not stop the operation of the super heater with an electromagnetic contactor provided on
the primary side of the temperature control unit. The surge voltage damages internal electronic
devices.
Always turn on the breaker (NFB) of the temperature control unit, and do not turn it on / off as
an operation switch. The surge voltage damages internal electronic devices.
● About operation at the time of momentary power failure at the time of power failure・In the case of a momentary power failure on the factory side due to a power outage, etc., the operation
state before the power failure is automatically restored after the power is turned on again (return)regardless of the power turn-on time.

－１０－１１．Hot Start operation
Hot start operation is an operation method in which the super heater is energized when there is no wind to
perform preheating operation, and the required hot air discharge temperature (Max.500 ° C) is discharged
within a few seconds at the same time as the air is blown.
● Do not supply air during hot start operation. If even a small amount of air flows, the A sensor for hot air
temperature detection of the super heater detects the temperature and controls it, so it may not be
possible to obtain an arbitrary hot start temperature.
● During hot start operation, it is managed by either the A sensor for hot air temperature detection of thesuper heater and the B2 sensor for hot start temperature detection. If the hot air temperature detection A
sensor setting is extremely low, control may start before the set temperature of the hot start temperaturedetection B2 sensor is reached due to radiant heat or updraft.
● There are restrictions on the mounting posture of the super heater during hot start operation. Please also
check the instruction manual for the super heater.
① Press and hold the mode switch in the stopped
state (about 2 seconds).

② Set the temperature section to "on" with the up
key.

"HoT" is displayed in the hot air temperature section, and"oFF" is displayed in the set temperature section.

③ Press the mode switch again.

④"SHT" is displayed in the hot air temperature section, and"0" is displayed in the set temperature section (at the first
operation: the previous set value is displayed after thesecond operation).

※

－１１－

Set any hot start temperature (Max.500 ℃) tothe set temperature with the up / down keys.

It can be set in 1℃ increments with the up and down keys.

⑤ Press the mode switch twice to return to thestopped state.

⑥ Hold down the mode switch and press the hot air
switch.
"Hot" and hot start temperature (B2 sensor temperature forhot start detection) are displayed alternately in the hot air
temperature section, the hot air lamp lights up, the blower
lamp blinks, and the hot start operation starts.

※ The heater lamp (green) lights up and blinks the ON / OFF
status of the heater.

⑦ Press the hot air switch again to start hot air
operation.

⑧

To switch to hot start operation again, perform
step (6) above.

The A sensor temperature for hot air temperature detection
is displayed in the hot air temperature section, and the set
temperature for normal operation (hot air operation) is
displayed in the set temperature section.

By pressing the stop switch, the hot start operation is stopped.

※ If you want to perform hot start operation again under the same temperature conditions after pressing thestop switch, only the operations after ⑥ above are required.
During hot start operation, a unique control function is provided to prevent damage to theheater due to a sudden temperature rise. The upper limit of the heater output is suppressed to
2/3, and the heater is controlled so that the hot start temperature indicated value rises atabout 2.5 ° C per second.

－１２－

１２．Timer operation /Ｓtop
Before operating the timer and stopping the timer, set the hot air temperature and air volume adjustment as desired.
Set the timer while the operation is stopped (the timer cannot be set during the blowing operation or hot air operation).
※Timer operation and timer stop cannot be performed in the external operation mode.

● Timer operation (operation over time)① Press the timer operation switch.

② Use the up and down keys to set any time.
It can be set in 1 minute increments up to 99 hours 59
minutes. When you release the up / down key after
completing the setting, it will switch from blinking to lit after
2 seconds and the set value will be registered.

The timer operation lamp (green) lights up, "00.00." Flashes on thetimer display, or the previously set time lights up.

③ Press the hot air operation switch.
Time count (timer set time subtraction) starts(dot display blinks), and hot air operation starts
when the time count reaches "00.00". In addition,
the hot air lamp (orange) blinks during the time
count, and switches to lighting after the hot air
operation starts.
※ After the time count is completed, the timer
display will be "00.00.".
※ Press the stop switch to stop the timer operationand time count.

※ When the hot start operation mode is set to "on", it will be in the hot start operation state during the time count. Please note thatafter the time count, the hot air operation will start ignoring the arrival of the hot start set temperature.

● Timer stop (stop after time)① Press the timer stop switch.

② Use the up and down keys to set any time.
It can be set in 1 minute increments up to 99 hours 59
minutes. When you release the up / down key after
completing the setting, it will switch from blinking to lit after
2 seconds and the set value will be registered.

The timer stop lamp (green) lights up, "00.00." Flashes on
the timer display, or the previously set time lights up.

③ Press the hot air operation switch.
Time counting (timer setting time subtraction) is started(dot display blinks), and hot air operation is performed.
Hot air operation is stopped when the time countreaches "00.00". In addition, the hot air lamp (orange)
lights up during hot air operation, and switches toblinking after the hot air operation ends.
※ After the time count is completed, the timer
display will be "00.00.".
※ Press the stop switch to stop the timer operationand time count.

※ When the hot start operation mode is set to "on", the hot start operation state is entered after the time count ends, and control
continues at the hot start temperature.

－１３－１３．When using an external sensor● The temperature at a remote location can be controlled by an external sensor. Make the settings after connecting theexternal sensor to the external sensor input terminal block of the service terminal.

● When using an external sensor, the hot air temperature setting of the set temperature value is the settingof the external temperature sensor position, and the hot air temperature indication of the hot air
temperature value is the temperature of the external sensor position.
① Connect the external sensor to the external sensor input terminals 4 (+) and 5 (-) of the service terminal
without mistakes for plus and minus.
③ Press the mode switch once again.

② Press and hold the mode switch (about 2 seconds).
"HoT" is displayed in the hot air temperature section, and"oFF" is displayed in the set temperature section.

"ESn" is displayed in the hot air temperature section, and"oFF" is displayed in the set temperature section.

④ Set the temperature section to "on" with the up
key.

⑤ After setting the desired temperature and air
volume, start hot air operation.

After setting, press the mode switch once to return to thenormal operation status display.

When the external sensor setting is turned on, the externalsensor lamp (orange) lights up.

※ If the discharge port temperature of the super heater reaches the maximum discharge temperature before reaching the set
temperature of the external sensor, the control is performed at the maximum discharge temperature of the super heater, so thetemperature set by the external sensor may not be reached. If the upper limit of the maximum discharge temperature of the superheater is exceeded, a temperature abnormality (see page 24) will occur and the operation will stop. When setting the temperature of
the external sensor, consider the mounting position of the super heater and the external sensor.
※ If the external sensor is set while the external sensor is not connected, burnout will be activated and operation will not be possible (see page 25).
※ When the external sensor is no longer used, return the set temperature section to "oFF" in item (4) above.

－１４－

１４．When using external operation● Super heater operation stop and hot start operation can be operated by an external signal.
Normal operation by external signal (hot air operation)① Connect an external signal (non-voltage contact signal) to the external operation on / off terminal and external heater on / off terminal of the service terminal.
・External operation on / off terminal：

Input terminal 1- 3

・External heater on / offterminal：

Input terminal 2- 3

Terminal voltage DC24V 7mA or less

② After setting the desired temperature and air volume, press and hold

③ Operate with an external operation signal.

the external operation switch in the stopped state (about 2 seconds).

The external operation lamp (orange) lights up.

In the case of ventilation operation by turning on theexternal operation on / off signal and turning off the external
heater on / off signal, the ventilation lamp (green) lights up.

In the case of hot air operation with external operation on /off signal ON and external heater on / off signal ON, the hot
air lamp (orange) lights up.

※ After the super heater is stopped by external operation, it cannot be restarted for about 20
seconds (in the standby state for restart, the air blow or hot air lamp blinks and starts 20 seconds
after the stop). Also, if the external heater is turned on / off frequently, the internal relay will havea short life, so do not turn the heater on / off frequently.
※ In the external operation mode, the blower switch and hot air switch are disabled (cannot be operated).
※ To reset the external operation, press the stop switch. In addition, timer operation and timer stop cannot be performed by external operation.
※ The external operation mode is canceled when the NFB of the main unit is turned off. It is not released when the factory power
supply (primary power supply) is turned off.

－１５－

From hot start operation by external signal to normal operation(hot air operation)① Connect an external signal (non-voltage contact signal) to the external operation on / off terminaland external heater on / off terminal of the service terminal.
・External operation on / off terminal：

Input terminal 1- 3

・External heater on / offterminal：

Input terminal 2- 3

Terminal voltage DC24V 7mA or less

② Enable the hot start operation mode and set the hot start temperature.
Refer to P11-12 for how to set the hot start operation mode.

③ After setting the desired hot air temperature and air④ Turn on the external heater on / off terminal by
an external signal.

volume, press and hold the external operation switch
in the stopped state (about 2 seconds).

"Hot" and hot start temperature (B2 sensor temperature forhot start detection) are displayed alternately in the hot air
temperature section, the hot air lamp lights up, the blower
lamp blinks, and the hot start operation starts.

The external operation lamp (orange) lights up.

⑤ Turn on the external operation on / off terminalby an external signal.

⑧

The A sensor temperature for hot air temperature detection
is displayed in the hot air temperature section, and the set
temperature for normal operation (hot air operation) is
displayed in the set temperature section.

When switching to hot start operation again, turnoff the external operation on / off terminal by an
external signal.

※ After the super heater is stopped by external operation, it cannot be restarted for about 20 seconds(in the standby state for restart, the air blow or hot air lamp blinks and starts 20 seconds after thestop). Also, if the external heater is turned on / off frequently, the internal relay will have a shortlife, so do not turn the heater on / off frequently.
※ In the external operation mode, the blower switch and hot air switch are disabled (cannot be operated).
※ To reset the external operation, press the stop switch. In addition, timer operation and timer stop cannot be performed by external operation.
※ The external operation mode is canceled when the NFB of the main unit is turned off. It is not released when the factory power
supply (primary power supply) is turned off.

－１６－

１５．When using the cooling operation function● The cooling operation function can be used only when the operation stop by the timer is selected. After performing hot air operation
with a timer, perform air blowing operation for an arbitrary time and stop the operation.

※ Since our super heater has a low watt density of the heater, it does not require cooling operation to prevent
disconnection of the heater. Therefore, please use this cooling operation function to prevent burns to pipes, etc. due
to residual heat after the operation is stopped, and to cool dry and heated products after work.

① While holding down the mode switch in the stopped② Set the temperature section to "on" with the up
key and press the mode switch once.

state, keep pressing the up key of the timer.
"T-2" is displayed in the hot air temperature section, and"oFF" is displayed in the set temperature section.

"00.00." Flashes on the timer display.

③ Use the up and down keys to set any coolingtime.

④ Press the timer stop switch to set the hot air
operation time.

After setting, press the mode switch once to return to thenormal operation status display.

⑤ Press the hot air operation switch.
After the hot air operation by the timer operation iscompleted, the cooling operation (blower operation) by thetimer is started. In addition, the ventilation lamp (green)lights up during the cooling operation.

Time counting (dot display blinking) starts and hot air operation is
performed. In addition, the hot air lamp (orange) lights up during hot
air operation.

When the time count reaches "00.00.", The cooling operation (blower
operation) stops and the blow lamp (green) blinks.

※ Press the stop switch to stop the timer operation (the timer
setting time returns to the default value).
※ Even if the timer stop is selected with the hot start mode
set to "on", if the cooling operation is set, it will be stopped
after the cooling operation is completed (it will not return tothe hot start state).

－１７－

１６．Unlock※Make changes in the stopped state with theexternal operation function released.

● In order to use the temperature alarm and output terminal function settings, it is necessary to change eachparameter. Before changing each parameter, first unlock the parameter.
② Press the mode key 6 times.

① Hold down the mode key and hold down the hot
air temperature up key.

"Loc" is displayed in the hot air temperature section, and"Lc1" is displayed in the set temperature section.

"P" is displayed in the hot air temperature section and"20.0" is displayed in the set temperature section.

③ Use the down key to change the set temperaturesection to "---".

④ After changing, press the mode key once toreturn to the normal operation status display.
This completes unlocking.

※ The factory lock mode is "Lc1". "---" unlocks, "Lc2" locks only temperature setting, air volume setting, timer setting, and other settings. If you wantto fix the temperature setting, air volume setting, and timer setting and prevent erroneous setting, you can change it to "Lc2" and use it.

To re-lock after unlocking, change the "----" display of the set temperature section to "Lc1" by the same operation as above.

You can change each parameter by unlocking it, but never change any parameters otherthan those described in this manual.
Changing it may cause dangerous driving conditions and malfunctions. Also, please notethat we do not guarantee any changes.

－１８－

１７．When setting a temperature alarm● An alarm signal can be output when the discharged hot air temperature exceeds an arbitrary fixed range with respect
to the set temperature. Please use it as needed (it is disabled at the time of shipment).

① Select the temperature alarm output signal "A1" for any of the output terminal functions.
※ Refer to P.20-21 for how to select the output terminal function.

③ Press the mode switch once.

② After unlocking in the stopped state, press andhold the mode switch (about 2 seconds).

"A1" is displayed in the hot air temperature section, and "0"
is displayed in the set temperature section.

"HoT" is displayed in the hot air temperature section, and"oFF" is displayed in the set temperature section.

※ If you set the hot start mode to "on", press the mode switch
twice.

④ Use the up and down keys to set any temperature range.

⑤ Start hot air operation.

After setting, press the mode switch twice to return to thenormal operation state.

If it is set to "10", the alarm lamp (red) lights up when the set outlet
temperature is + 10℃ or higher and -10 ℃ or lower, and an alarm is output
from the service terminal (except when the temperature rises when hot air
operation starts).

※After making the change, lock it again and operate.
※ The temperature alarm does not stop the operation of this machine.
※ When the temperature alarm setting is 0, the temperature alarm output is disabled.
※ The temperature alarm is output as a non-voltage contact signal (contact capacity AC250V 1A DC30V 1A) from the terminal forwhich the temperature alarm output is selected by the output terminal function.

－１９－

１８．Output terminal function setting
At the time of shipment, the output terminals (service terminals: 6-7-8-9) are set to blower output, heater
output, and abnormal output. You can change these output settings as you like.
《Factory settings》●

Outputterminal●

Outputterminal

6

Blower output signal "Fan"： It is output during blower operation.

7

Heater output signal "HET"：It is output during normal operation (hot air operation) and during hot
start operation (it is not output during blower operation, stop, or
abnormality).

Abnormal output signal "ALM"
Output8: Output when an error occurs.
terminal※ Output terminal 9 is a common common.
●《Changeable output settings》●●

Temperature alarm output signal "A1"
： Output when the temperature alarm is activated.
Operation output signal "rUn"： It is output during normal operation (hot air operation) and during blower operation(it is not output during hot start operation, stop, or abnormal condition).

※ The abnormal output signal is output when each temperature sensor is connected in reverse, or when all abnormalities are detected except for
negative temperature detection and reverse phase abnormality (when pressure is abnormal, all operations are output when stopped).

※ For each output signal, the internal relay contact terminals 6-9, 7-9, and 8-9 are turned on when the selected function is activated.
(Non-voltage contact signal, contact capacity DC30V, 1A)

Before setting the output terminal function, unlock it in the stopped state.

【When changing the output terminal

6】① Hold down the mode switch and press and hold the hot air② Use the up and down keys to change the set
temperature section to any output function.

temperature down key at the same time for 10 seconds.
"OT1" is displayed in the hot air temperature section, and "Fan" is displayed in
the set temperature section. Ignore the "A1F" display on the hot air
temperature section on the way.

③ After setting, press the mode switch three times to return to the normal stopped state.

－２０－【When changing the output terminal 7】① While holding down the mode switch, press and holdthe hot air temperature down key at the same time for
10 seconds, and after "oT1" is displayed on the hot
air temperature section, press the mode switch once.

② Use the up and down keys to change the set
temperature section to any output function.

"OT2" is displayed in the hot air temperature section, and"HET" is displayed in the set temperature section. Ignore
the "A1F" display on the hot air temperature section on theway.

③ After setting, press the mode switch twice to return to the normal stopped state.
【When changing the output terminal 8】① While holding down the mode switch, press and hold the② Use the up and down keys to change the set
temperature section to any output function.

hot air temperature down key at the same time for 10
seconds, display "oT1" on the hot air temperaturesection, and then press the mode switch twice.
"OT3" is displayed in the hot air temperature section, and"ALM" is displayed in the set temperature section. Ignore
the "A1F" display on the hot air temperature section on theway.

③ After setting, press the mode switch once to return to the normal stopped state.
After setting, be sure to lock it before starting operation.

－２１－

１９．Anomaly detection◆

When an abnormality is detected, the buzzer sounds at the same time as the abnormality isdisplayed. Depending on the recovery method of each abnormality, the buzzer sound will also
stop when the abnormality is cleared.

１９－１ Overheat (burnout)
IIf the temperature inside the heater case becomes abnormally high, it will be detected as overheating. Or, if
the B2 sensor for overheat prevention temperature detection is broken, it will be detected as burnout.
Then, the breaker (NFB) of the main body trips and all operations are stopped.
Whenoverheating●
The overheat lamp (red) lights up, and "nFb" flashes in the
hot air temperature section and "Tcb" flashes in the set
temperature section.

《Main cause》
・ No air is supplied・ Clogged super heater inlet wire net
・ Clogged air source filter
・ Blower motor lock due to foreign matter
・ Sufficient exhaust port for furnace body etc. cannot be secured
・ The resistance (pressure loss) of the discharge port is large
due to the proximity of the target work, etc.

《How to return》
After removing the cause of overheating and coolingsufficiently, turn off the main power supply (factory power
supply) and the main body breaker (NFB), and then turnthem on again.

１９－２ Abnormal temperature
If the outlet temperature exceeds the upper limit, or if the suction temperature exceeds the upper limit, it will stop or
enter the ventilation operation state. The operation is also stopped in the event of burnout such as disconnection ofeach sensor or abnormal temperature inside the temperature control unit.

● When the outlet temperature upper limit is exceeded at theoutlet sensor

The abnormal temperature lamp (red) lights up, "nFb"
flashes in the hot air temperature section, "TcA" flashes
in the set temperature section, and the breaker (NFB) of
the main unit trips and all operations stop.

《Main cause》
・ Exceeding the upper limit of outlet temp when using an external sensor
・ Air volume reduction due to excessive pressure loss
・ Super heater inlet Reduced air volume due toclogging of wire mesh・ Air volume reduction due to clogging of air source filter
・ Air volume reduction of the air source《How to return》
Eliminate the cause of the discharge port
temperature upper limit being exceeded, andafter cooling sufficiently, turn off the main power
supply (factory power supply) and the main bodybreaker (NFB), and then turn them on again.

Note: Be sure to shut off the main power supply (factory power supply) when checking the wiring or
rewiring in the event of an abnormality.
－２２－

● When the inlet temperature upper limit is exceeded
The abnormal temperature lamp (red) lights up, the current
discharge temperature is displayed in the hot air temperaturesection, and "Tcc" is blinking in the set temperature section,and the system is in the blowing operation state.

《Main cause》
・ When the upper limit (100 ° C) of the intake gas
temperature of the heater is exceeded《How to return》
After the temperature of the suction port has
dropped, it can be released by pressing the stop
switch.

※ In this case, the upper limit of the inlet temperature will
be an abnormality in the inlet temperature detection
sensor installed inside the heater.

● Outlet sensor burnout
The abnormal temperature lamp (red) flashes, "---"
flashes in the hot air temperature section, "TcA" flashes
in the set temperature section, and the main body breaker(NFB) trips and all operations stop.

《Main cause》
・ Disconnect sensor disconnection
・ Disconnection of outlet sensor wiring《How to return》
Please turn off the power supply on the primaryside and request repair.

● When the internal temperature of the temperature control unit is abnormal
The abnormal temperature lamp (red) flashes, "OH"flashes in the hot air temperature section, and "ALM"
flashes in the set temperature section, and the system isin the blowing operation state.

《Main cause》
・ Temperature control unit installation Atmospheretemperature is high・ Effect of heat dissipation temperature of the furnace bodywhen installed on the upper part of the furnace body

《How to return》
It can be released by stopping the operation withthe stop switch, turning off the breaker (NFB) of
the main body after the internal temperature of
the temperature control unit has dropped.

Note: Be sure to shut off the main power supply (factory power supply) when checking the wiring or
rewiring in the event of an abnormality.
－２３－

１９－３ Blower abnormality
When the blower becomes overloaded, overcurrented or locked, all operations will stop.
● When the blower is abnormal
The blower abnormality lamp (red) lights up, and "THr"flashes in the hot air temperature section and "ALM"
flashes in the set temperature section.

《Main cause》
・ Blower bearing wear
・ Abnormal voltage (voltage other than rated)
・ Piping with large pressure loss
・ Use of nozzles with extremely narrow
openings, etc.
《How to return》
After confirming the cause of the abnormality
and removing it, turn off the breaker (NFB) of themain unit and then turn it on again.

● When pressure is abnormal (only when using blower unit FH50, FH60)
When the air pressure on the discharge side of the blower units FH50 and FH60 exceeds the maximum
discharge pressure that can be used continuously, an alarm sounds.
Continuous use of discharge side air pressure When the
maximum discharge pressure is exceeded for 10 minutes,
the blower abnormality lamp (red) blinks and all operations
are stopped.
The hot air temperature section and the set temperaturesection display the discharge temperature and set
temperature at that time.

《Main cause》
・ Piping with large pressure loss
・ Use of nozzles with extremely narrow openings, etc.
・ Too much air volume is throttled by valves, etc.
《How to return》
After removing the cause and operating below
the maximum discharge pressure that can beused continuously, it can be released by pressing
the stop switch.
● Frequency anomaly
When the supply frequency from the primary power
supply exceeds the rated frequency (50 / 60Hz) of± 3Hz, "SYS" flashes in the hot air temperaturesection and "ALM" flashes in the set temperaturesection, and all operations stop. ..
《Main cause》
・ Not supplied with rated frequency by using agenerator etc. for the primary power supply《How to return》
After checking the supply of the rated frequency, turn off
the main power supply (factory power supply) and thebreaker (NFB) of the main unit, and then turn it on again.
※ Please refer to the technical data on our website, what to dowhen a frequency abnormality occurs.

Note: Be sure to shut off the main power supply (factory power supply) when checking the wiring or
rewiring in the event of an abnormality.
－２４－

８－４ Other abnormalities● At the time of external sensor burnout
If the temperature of a remote location is controlled using an optional external sensor, all operations willstop when the external sensor burns out such as a disconnection.
"----" flashes in the hot air temperature section and"Tc0" flashes in the set temperature section (the externalsensor lamp is lit).

《Main cause》
・ External sensor disconnection
・ Disconnection of external sensor compensation
conductor
・ Detachment of external sensor terminal《How to return》
After checking the external sensor, you canrelease it by pressing the stop switch.

● Reverse connection of each temperature sensor or negative temperature detection
If each temperature sensor (including the external sensor) is connected in reverse, or if it senses -15 ° Cor less (internal temperature sensor -10℃), all operations will stop.
The display of each sensor blinks in the hot air temperaturesection and in the set temperature section.
・ Outlet sensor： Tc0： TcM ・ inlet sensor
・ B2 sensor for overheat prevention： Tcb
・ External sensor

・ B1 sensor for overheat prevention

： TcA
： Tcc

《Main cause》
・ Reverse connection of external sensor
・ Reverse connection by rewiring each sensor(other than external sensor)
・ Reverse connection by rewiring each sensor(other than external sensor)《How to return》
After checking the external sensor or improving
the negative condition, it can be released bypressing the stop switch. For reverse connection
other than the external sensor, please contact
us for repair.
● When reverse phase is abnormal
If the power line connection is out of phase or the T phase is out of phase, the operation will be disabled.
Each display will be the same as when the breaker (NFB) of the main unit is turned
on, and the reverse phase lamp (red) will blink separately.
《Main cause》
・ Reverse connection of power line, disconnection of T phase《How to return》
・ Replace any two of the power connection lines.
Note: Be sure to shut off the main power supply (factory power supply) when checking the wiring or
reworking the wiring in the event of an abnormality.
－２５－

２０．When using a remote controller (optional)● The optional remote controller RCT-10MC requires a dedicated connector for the temperature control unit.
Therefore, please note that the remote controller cannot be retrofitted after purchasing the temperature
control unit TCU series.
① Install the remote controller by the following method and fix it firmly.
Deferred or suspended using fixing
brackets

Wall-mounted mounting
using fixing brackets※ The remote cable can be attached to all of thetop, bottom, left, and right of the remotecontroller. Use the entry holes (knockouts) oneach side to attach it to any position. Also, if youchange the mounting position, attach the rubberbushing to the entry hole at the bottom to protectit.

② Securely connect the connector (6P) of the remote cable terminal attached to the remote controller to the remotecontroller connector (6P) of the temperature control unit TCU series terminal block.

※③ Start operation according to the instruction manual.
The operation panel of the temperature control unit and the remote controller work together(either can be operated).
note ： Do not wire or bind the remote cable adjacent to the AC power line, power line, or

The remote controller connector (6P) is the lower left connector of the blower output terminal (only for the temp control unit with remote controller mounting specifications).

harmonic line. Noise will damage internal electronic devices. Also, be careful that the
remote cable is not affected by heat. Shorts due to fusing. Also, be sure to shut off themain power supply (factory power supply) when connecting the remote controller.

－２６－Electrical connection diagram● Example of combining genuine manufacturer functions
Perfect temperature control, safety circuit can be secured, and various high-performance functions such asenergy-saving operation in hot start operation can be used.

※1 Wire the temperature sensor wiring and input / output signal wiring separately from the power line, power line, and high-week broken line to avoid malfunction due to noise.
It will be the factory setting. You can select one of the three output signals: blower, heater, operation, abnormality, and temperature alarm output.

※2 Terminal voltage DC24V 7mA or less (contact for non-voltage microload). "On" when ON (closed).
※3 For each sensor, heater, power supply, and pressure signal code, use the code attached to the temperature control unit and blower unit.
※4 The pressure switch and pressure signal code are attached to FH50 and FH60.
※5 The heater power supplies for SH41 to SH61 are U, V, and W phases only.
※6 SH41 to SH61 are delta circuits, and SH71 is an open delta circuit (200V).
※7 Each sensor setting value changes depending on the super heater model and voltage.

《NOTE》● Wire the temperature sensor wiring and input / output signal wiring separately from the power line,
power line, and high-week broken line to avoid malfunction due to noise.

● Provide a dedicated circuit for the power supply and secure sufficient capacity.
● Determine the power line in consideration of the required capacity and length.
● Ask an electrician for wiring work and grounding work.

HOT-AIR GENERATOR.
Manufact
urer

KANSAI ELECTRIC HEAT CORP.
4-18, TAKAIDANISHI 5-CHOMEHIGASHIOSAKA CITY
577-8566 JAPAN
PHONE (06) 6785-6001㈹ FAX (06) 6785-6002
HOMEPAGE

www.kansaidennetsu.co.jp