Wiring For Zr40H Automatic Calibration Unit - YOKOGAWA ZR22G User Manual

(2) The ON/OFF level of this contact input is identified by the resistance or voltage. Connect a
contact input that satisfies the specifications in Table 5.2.
Table 5.2
Resistance
Voltage
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
Automatic Calibration Unit, in a system where the calibration gas flow rate is automatically
controlled (e.g. System configuration 3). When installing this wiring, proceed as follows:
Span gas solenoid valve
Zero gas solenoid valve
COMMON SPAN
Figure 5.13
Cable Specifications
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.
Identification of Contact Input ON/OFF
Closed
200 Ω or less
-1 to 1 VDC
Wiring inlet
2-G1/2, Pg13.5, M20 or 1/2NPT
ZERO
to ZR802G terminal "AC-COM"
to ZR802G terminal "AC-SPAN"
to ZR802G terminal "AC-ZERO"
Terminal screw : M4
Automatic Calibration Unit
Open
100 kΩ or more
4.5 to 25 VDC
COMMON ZERO
SPAN
<5. Wiring>
IM 11M12G01-02EN 1sh Edition : Mar. 25, 2021-00
5-11