External Wiring - Mitsubishi Melsec-Q Series User Manual

4
SETUP AND PROCEDURES BEFORE OPERATION
4.4.2
(1) Wiring procedure
Compensation
conductors
(*2)
RTD
(*3)
4
- 7 4.4 Wiring

4.4.2 External wiring

External wiring
1) Install a relay terminal block for wiring.
2) Connect the thermocouple and the compensation conductors to the relay
terminal block.
3) When setting the Q68TD-G-H02(H01) to "With cold junction temperature
compensation", connect the cold junction temperature compensation resistor
(RTD), which is supplied with Q68TD-G-H02(H01), to the relay terminal block.
4) Use A6CON4 to wire between the relay terminal block and Q68TD-G-
H02(H01).
Relay
terminal block
CH1
+
-
CH8
+
-
RTD
+
-
G
(*4)
Figure 4.5 Wiring example using relay terminal block
*1 Always use shielded cabled.
In addition, always ground the shield.
*2 Always use shielded compensation conductors.
In addition always ground the shield.
*3 When setting the Q68TD-G-H02(H01) to "With cold junction temperature compensation",
always connect the cold junction temperature compensation resistor (RTD).
*4 When connecting the RTD, always connect the terminals between RTD- and RTD G.
Connector
(A6CON4)
Cable(*1)
Q68TD-G-H02(-H01)
CH1
A1
+
B1
-
CH8
A15
+
B15
-
RTD
B19
+
B20
-
A20
G