<5. Wiring>
5-11
IM 11M12G01-02EN 1sh Edition : Mar. 25, 2021-00
Table 5.2 Identication of Contact Input ON/OFF
Closed Open
Resistance
Voltage -1 to 1 VDC 4.5 to 25 VDC
5.2.9 Wiring for ZR40H Automatic Calibration Unit
This wiring is for operating the solenoid valve for the zero gas and the span gas in the ZR40H
COMMON SPAN ZERO
to ZR802G terminal "AC-COM"
to ZR802G terminal "AC-SPAN"
to ZR802G terminal "AC-ZERO"
Wiring inlet
2-G1/2, Pg13.5, M20 or 1/2NPT
ZERO
SPAN
COMMON
Span gas solenoid valve
Zero gas solenoid valve
Terminal screw : M4
Figure 5.13 Automatic Calibration Unit
Cable Specications
Use a 3-core cable for the above wiring.
Wiring Procedure
M4 screws are used for the terminals of the converter. Each cable should be terminated with
crimp-on terminals suitable to M4 screws. M4 screws are used for the terminals of the solenoid
valve as well.