Testing The Alarm Relays; Accessing The Calibration Menu - GE DigitalFlow GS868 Service Manual

1.7 Testing the Alarm Relays

Alarm relays may be added to the Model GS868 by installing an Alarms Option Card in one (or more) of the six
expansion slots. Each option card includes three alarm relays, which are designated as A, B, and C. To test the alarm
relays, connect an ohmmeter to the option card terminal block as shown in Figure 4 below. Refer to the menu map in
Figure 6 on page 15 as a guide.
For this discussion, assume that the option card has been installed in

1.7.1 Accessing the Calibration Menu

[CAL]
1. Press the key to enter the Calibration Program.
[Fx]
2. Press to calibrate the desired slot. (The option bar will include a slot listing for each installed option card.)
[F1]-[F3]
3. Press to select alarm relay A, B or C, respectively.
DigitalFlow™ GS868 Service Manual
Terminal Block (Option Card)
9
C
NC
C
COM
C
NO
B
NC
B
COM
B
NO
A
NC
-
A
+
COM
A
NO
1
Figure 4: Typical Ohmmeter Connections
Ohmmeter
Slot x
.
Chapter 1. Calibration
11