Caution during Use 
 
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Caution during Use   
  Follow instructions in 'Cautions during Use'. Otherwise, It may cause unexpected accidents. 
  Check the polarity of the terminals before wiring the temperature sensor. 
For RTD temperature sensor, wire it as 3-wire type, using cables in same thickness and 
length. 
For thermocouple (CT) temperature sensor, use the designated compensation wire for 
extending wire. 
  Keep away from high voltage lines or power lines to prevent inductive noise. 
In case installing power line and input signal line closely, use line filter or varistor at power 
line and shielded wire at input signal line. 
Do not use near the equipment which generates strong magnetic force or high frequency 
noise. 
  Do not apply excessive power when connecting or disconnecting the connectors of the 
product. 
  Install a power switch or circuit breaker in the easily accessible place for supplying or 
disconnecting the power. 
  Do not use the unit for other purpose (e.g. voltmeter, ammeter), but temperature controller. 
  When changing the input sensor, turn off the power first before changing. 
After changing the input sensor, modify the value of the corresponding parameter. 
  Power supply should be insulated and limited voltage/current or Class 2, SELV power 
supply device. 
  Do not overlapping communication line and power line. 
Use twisted pair wire for communication line and connect ferrite bead at each end of line to 
reduce the effect of external noise. 
  Make a required space around the unit for radiation of heat. 
For accurate temperature measurement, warm up the unit over 20 min after turning on the 
power. 
  Make sure that power supply voltage reaches to the rated voltage within 2 sec after 
supplying power. 
  Do not wire to terminals which are not used. 
  Install DIN rail vertically from the ground. 
  This unit may be used in the following environments. 
①Indoors (in the environment condition rated in 'Specifications') 
②Altitude max. 2,000m 
③Pollution degree 2 
④Installation category II 
The above specifications are subject to change and some models may be discontinued without 
notice. 
Be sure to follow cautions written in the instruction manual, user manual and the technical 
descriptions (catalog, homepage).