YOKOGAWA MG8G, User Manual, Page: 22 / 63

<4. WIRING>
4-1
IM 11P03A03-01E 6th Edition : Jan. 26, 2022-00
4. WIRING
4.1 External Connection Terminals
The external connection terminals are located inside the operation panel. To open the panel,
loosen the two screws on the panel.
Figure 4.1 shows the diagram of the external connection terminals of the MG8G. The terminal
numbers are indicated on the instrument. Be sure to make all connections correctly. The terminal
screw thread is M4. Appropriate crimp terminals should be used. Make sure that terminals G (26)
and FG (27) should remain connected by a supplied jumper plate.
1
2 3
4 5 6 7 8 9
FG
CAL START 4-20mA DC
COM
R3 R2
RANGE CHANGE
ANALOG OUTPUT
+ –
CONTACT INPUT
10
11 12
13 14 15 16 17 18
R3/HI
MAIT • CAL FAIL
R2/LO COM
RANGE-OUT/HL ALM
CONTACT OUTPUT
19 20 21 22 23 24 25 26 27
FG
ZERO SPAN SMPL COM
L N
G FG
SV POWER OUTPUT
AUTO CAL
POWER SUPPLY
JUMPER PLATE
F7.1E.ai
NOT
CONNECTION
Output signal
Automatic calibration
contact input
Ground
Remote range
contact input
High/low limit alarm
contact output or
range contact output
Maintenance mode
contact output FAIL contact output
Automatic calibration
solenoid valve drive signal
Power supply (AC)
Figure 4.1 External Connection Terminals
4.2 Wiring Precautions
WARNING
Please attach a terminal cover before switching on the instrument.