Mitsubishi Electric M800W Series Connection And Set Up Manual page 382

M800W/M80W Series Connection and Setup Manual
12 Connection of Remote I/O Unit
(c) Connecting with the thermocouple input signal
Thermocouple
FG
Cold junction compensation resistor
(Pt100)
Thermocouple
FG
Cold junction compensation resistor
(Pt100)
Thermocouple
FG
Cold junction compensation resistor
(Pt100)
Thermocouple
FG
Cold junction compensation resistor
(Pt100)
Stabilized power supply
24VDC(+)
0V
FG
- Connect the shield to FG pin of AI connector. Ground the thermocouple tip side, too.
- Do not connect or disconnect the cables between units while the power is ON.
- Keep the lead length of cold junction compensation resistor as short as possible (2 cm or shorter as a guide).
FCU8-DX409
AI
3
5
Shield
1
4
6
7
9
Shield
12
8
10
15
17
Shield
13
16
18
19
21
Shield
24
20
22
DCIN
1
2
3
343
Cold junction
compensation
V+
resistor
V-
(Pt100)
FG
CH1
CJ+
CJ-
Set the lead length 2cm or
shorter including the length to
insert to AI connector. (As a guide)
V+
V-
FG
CH2
CJ+
CJ-
V+
V-
FG
CH3
CJ+
CJ-
V+
V-
FG
CH4
CJ+
CJ-
+24V
0V
FG
AI
CJ+
CJ-
2cm or shorter
IB-1501268-K