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1. Warning
1.1 Installation and wiring
• This equipment intends to be installed with the following conditions.
• Preserve the creepage and clearance as shown below between the temperature sensor and the
location which indicates or generates the voltages as shown in the following table.
Failure to maintain these minimum distances would invalidate the EN 61010 safety approval.
Before using this product, the user is requested to read the following precautions carefully to ensure the
safety. Safety precautions must be taken by every user to prevent an accident.
The safety requirements are classified into "warning" and "caution" according to the following
interpretation :
SAFETY PRECAUTIONSRead before using
Voltage used or generated
by the other assemblies
Up to 50Vrms or Vdc
Up to 100Vrms or Vdc
Up to 150Vrms or Vdc
Up to 300Vrms or Vdc
Above 300Vrms or Vdc
Clearance
(mm)
0.2
0.2
0.5
1.5
Contact with sales office.
Creepage
(mm)
1.2
1.4
1.6
3.0
Hazardous
voltage
Warning
Suggesting that the user's mishandling can result in
personal death or serious injury.
Caution
Suggesting that the user's mishandling can result in
personal injury or damage to the property.
WARNING Over-temperature Protection
Any control system should be designed with prior consideration that any part of the system has potential to fail.
In case of temperature controlling, a continuance of heating on should be regarded as the most dangerous
state.
The followings are the most probable causes of inducing continuance of heating on:
1) The failure of the controller with heating output constantly on
2) The disengagement of the temperature sensor out from the system
3) The short circuit in the thermocouple wiring
4) Valve or switch contact point outside the system is locked to keep heating on
In any application in which it is apprehended that physical injury or destruction of equipment might occur, please
install an independent safeguard equipment to prevent over-temperature which shut down the heating circuit,
and for additional safety, we recommend this equipment to have its own temperature sensor.
The alarm output signal of the controller is not designed to work as protective measures when the controller is
in failure condition.
Operating temperature -10 to 50 [°C ]
Operating humidity 90%RH or less (Non condensing)
Installation category II
Pollution degree 2
Conforming to IEC1010-1
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