YOKOGAWA EXAxt ZR22G, User Manual, Page: 108 / 211

<7. Startup>
7-11
IM 11M12A01-02E
NOTE
If you conduct an open-close check for contact output 4, Error 1 or Error 2 will occur.
This is because the built-in heater power of the detector, which is connected to contact output 4,
is turned off during the above check. So, if the above error occurs, reset the equipment or turn the
power off and then back on to restart (refer to Section 10.6, Reset, later in this manual).
7.11.2 Checking Calibration Contact Output
The calibration contacts are used for solenoid valve drive signals for the ZR40H Automatic
Calibration Unit. When using the ZR40H Automatic Calibration Unit, use the calibration contact
output to check that the wiring connections have been properly completed and check equipment
operation.
(1) Referring to Section 7.11.1, display the contact check display.
(2) Select the “Calibration contacts” to display the panel display as Figure 7.25 shows.
(3) Open the “Zero gas contact” and the “Span gas contact”. This will help check the automatic
calibration unit and wiring connections.
Zero gas contact : Open

Span gas contact : Open
Enter
Calibration contacts
F7.15.3E.ai
Figure 7.25 Calibration Contact Check Display
NOTE
“Open” and “Closed” displayed on the Calibration contacts display indicate actions of drive
contacts and are opposite to the valve open and close actions. If “Open” is displayed on the
Calibration contacts display, no calibration gas flows. If “Closed” is displayed on that display,
calibration gas flows.
7.11.3 Checking Input Contacts
(1) Referring to Section 7.11.1, display the contact check display.
(2) Display the “Input contacts” check display as Figure 7.26 shows. The “Open” or “Closed”
input contact in the display shows the current contact input terminal status and the display
changes according to the contact status. Using this enables you to check that the wiring
connections have been properly completed.
16th Edition : Mar. 19, 2020-00