External Wiring Of The Nz2Gf2B-60Tctt4 - Mitsubishi Electric NZ2GF2B-60TCTT4 User Manual

6.6.1

External wiring of the NZ2GF2B-60TCTT4

(1) In the temperature input mode
*1 Be sure to use the shielded compensation lead wire.
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).
102
Unused
Temperature
measurement object
*1
*1
Reference junction
Compensation lead wire (OK)
Shielded cable (NG)
A
Cold junction temperature
compensation resistor
(Ambient) temperature difference
NZ2GF2B-60TCTT4
L1
Internal
L2
L4
Internal
COM-
CH1+
Filter
CH1-
Internal
CH2+
Filter
CH2-
CH4+
Filter
CH4-
NZ2GF2B-60TCTT4
Terminal block
A: Reference junction of the
B
thermocouple
B: Cold junction temperature
compensation resistor
circuit
circuit
circuit