Mitsubishi Electric MELSEC iQ-R R60TD8-G - External Wiring Examples

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5 WIRING
5.2 External Wiring
External wiring examples
This section shows the examples of external wiring.
Thermocouple input module
Follow the procedure below for wiring.
1. Install a relay terminal block.
2. Connect thermocouples and compensation lead wires to the relay terminal block.
3. When With cold junction compensation (0) is set to 'Cold junction compensation with/without setting' (Un\G298), connect
the provided cold junction compensation resistor (RTD) to the relay terminal block.
4. Wire the relay terminal block to a thermocouple input module using an external device connector.
*1 Use a shielded cable and ground the shields. Do not use a compensation lead wire.
*2 Use a shielded compensation lead wire and ground the shield. Do not use a cable.
*3 Connect the cold junction compensation resistor (RTD) when With cold junction compensation (0) is set to 'Cold junction compensation
with/without setting' (Un\G298).
*4 When connect the cold junction compensation resistor (RTD), connect the terminal of RTD- to the terminal of RTDG.
+
-
CH1
+
-
CH8
+
G
-
RTD
A1
B1
A15
B15
A20
B19
B20
+
-
+
-
+
G
-
RTD
CH1
CH8
RTD
Cable
*1
Relay
terminal block
External device
connector
Thermocouple input module
Compensation
lead wire
*2
A/D
conversion
circuit
A/D
conversion
circuit
A/D
conversion
circuit
*4
*3