External Wiring - Mitsubishi MELSEC-Q Series User Manual

4
SETUP AND PROCEDURES BEFORE OPERATION
4.4.2

External wiring

(1) Wiring procedure
Compensation
conductors terminal block
(*2)
(*3)
RTD
(*4)
*1 Always use shielded cabled.
*2 Always use shielded compensation conductors.
*3 When setting the Q68TD-G-H01 to "With cold junction temperature compensation",
*4 When connecting the RTD, always connect the terminals between RTD- and RTD G.
1) For wiring, set a relay terminal block to outside.
2) Connect the thermocouple and the compensation conductors to the relay
terminal block.
3) When setting the Q68TD-G-H01 to "With cold junction temperature
compensation", connect the cold junction temperature compensation resistor
(RTD), which is supplied with Q68TD-G-H01, to the relay terminal block.
4) Use A6CON4 to wire between the relay terminal block and Q68TD-G-H01.
Relay
CH1
+
-
CH8
+
-
RTD
+
-
G
In addition, always ground the shield.
In addition always ground the shield.
always connect the cold junction temperature compensation resistor (RTD).
Connector
(A6CON4)
Cable(*1)
4.4 Wiring
4.4.2 External wiring
Q68TD-G-H01
CH1
A1
+
B1
-
CH8
A15
+
B15
-
RTD
B19
+
B20
-
A20
G
4
- 6
1
2
3
4
5
6
7
8