DigitalFlow™ XGM868i Service Manual 49
Appendix B. Calibration and Testing with PanaView
B.4.6 Testing Alarm Relays
Alarm relays may be added to the Model XGM868i by installing an appropriate option card in Slot 1. This option card
contains two or four alarm relays, which are designated A, B, C and D.
Prepare for the testing procedure by connecting an ohmmeter to Alarm A of the option card. See Figure 4 on page 12 to
identify the NO, NC and COM pins for Alarm A on terminal block J2.
1. In the center pane of the Calibration/Test window, double-click on Slot 1.
2. Double-click on the desired output to open the Alarm Relay menu. (Output A will be used as an example in this
manual.)
IMPORTANT: The procedure for testing Alarms B, C or D is identical to that for testing Alarm A. However, be sure to
reconnect the ohmmeter on terminal block J2. See Figure 4 on page 12 for the correct pin numbers.
3. The center pane now offers three choices:
• Double-clicking on Close should yield an ohmmeter reading of about zero.
• Double-clicking on Open should yield an infinite ohmmeter reading.
• Double-clicking on Exit closes the Alarm Relay menu, and returns you to the Output window.
4. Repeat steps 2 and 3 until both the normally-open and normally-closed contacts for all alarm relays have been
tested. Then click [Exit Page] to return to the Slot 1 window and calibrate additional inputs/outputs, or click [Exit
Page] again to close the Calibration/Test menu.
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