104
(b) In the heating-cooling control
*1
Be sure to use the shielded compensation lead wire.
*2
Be sure to use the shielded cable.
Use the compensation lead wire for the cable of the thermocouple. If the compensation lead wire is not used, and when the
cold junction temperature compensation resistor is away from the end tip of thermocouple, the (ambient) temperature
difference may lead to a faulty temperature process value (PV).
Heating
L1H
L1C
CH1+
CH1-
Filter
Filter
CH2+
CH2-
Object
to be
controlled
*1
*1
*2
*2
*2
NZ2GF2B-60TCTT4
Internal
circuit
Internal
circuit
Internal
circuit
L2H
COM-
*2
24VDC
Internal
circuit
L2C
Internal
circuit
Cooling
NZ2GF2B-60TCTT4
Reference junction
Compensation lead wire (OK)
Shielded cable (NG)
Cold junction temperature
compensation resistor
(Ambient) temperature difference
Terminal block
A: Reference junction of the
thermocouple
B: Cold junction temperature
compensation resistor
A
B
Содержание NZ2GF2B-60TCRT4
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Страница 233: ...231 CHAPTER 8 FUNCTIONS 8 8 4 CC Link IE Field Network Function 3 Click the OK button on the following window ...
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