11 checking contact i/o, 1 checking contact output, Caution – Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 User Manual

Page 111

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IM 11M13A01-02E

7-12

7.11 Checking Contact I/O

Conduct the contact input and output checking as well as operational checking of the

solenoid valves for automatic calibration.

7.11.1

Checking Contact Output

To check the contact output, follow these steps:

(1) Press the Setup key in the basic panel display to display the Execution/Setup display.

Select Maintenance in that display.

(2) Select Contact check then contact output in the Maintenance panel display to display

the Output contact check display (see Figure 7.15.2).

(3) In this display, select the desired output contact for checking. The display, which

enables the closing and opening of contacts, then appears. Use the display to conduct
continuity checking.

Output contact 1 : Open

Output contact 2 : Open

Output contact 3 : Open

Output contact 4 : Open

Enter

Output contacts

F7.15.2E.EPS

Figure 7.15.2 Output Contact Check Panel Display

CAUTION

• 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
10.4, “Reset” later in this manual).

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