Testing Alarm Relays; Preparing For Testing; Testing The Relay - GE DigitalFlo XGM868i Service Manual

1.6 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.

1.6.1 Preparing for Testing

Prepare for the testing procedure by connecting an ohmmeter to the NO and COM pins of the desired alarm on the
option card. Refer to Figure 4 on page 12 to identify NO, NC and COM pins for the desired alarm on terminal block J2.

1.6.2 Testing the Relay

1. From the Keypad Program, press the right arrow key to scroll to the CALIB menu. Press [Enter].
2. In the Cal window, scroll to Slot 1. Press [Enter].
Note: The Slot 1 option only appears at the above prompt if an option card is installed in this slot.
3. Scroll to the desired Output. (
The procedure for testing all the alarms is the same. However, when testing a different output, be sure to
IMPORTANT:
reconnect the ohmmeter at terminal block J2. See Figure 4 on page 12 for the correct pin numbers.
4. Do one of the following:
•
Press [Enter] on Close. The ohmmeter should yield a reading of about zero.
•
Press [Enter] on Open. The ohmmeter should yield an infinite reading.
Note: To test the NC relay position, move the ohmmeter lead from the NO pin to the NC pin and repeat the above test.
In this case, the ohmmeter readings will be infinite when Close Alarm is selected and zero when Open Alarm is
selected.
Procedure Options
This completes testing of the Slot 1 alarm relays. Do one of the following:
•
To test the normally-open and normally-closed contacts for another alarm relay, return to Step 3 in Testing the
Relay above.
•
To calibrate/test additional inputs/outputs, proceed to the appropriate section.
•
To leave the Keypad Program, press [Escape] twice.
DigitalFlow™ XGM868i Service Manual
will be used as an example in this manual.) Press [Enter].
Output A
Chapter 1. Calibration
7