Connecting The Alarms - GE Moisture Image 1 Series Service Manual

June 2003

Connecting the Alarms

1-6
You can order the Series 1 with high and low alarm relays for each
channel. Hermetically sealed alarm relays are also available. Each
alarm relay is a single-pole double-throw contact set that contains the
following contacts (see Figure 1-4):
•
normally open (NO)
•
normally closed (NC)
•
armature contacts (C)
Make connections for the high and low alarm relays on the desired
channel(s) on the terminal blocks labeled ALM A and ALM B on the
back panel of the electronics unit. Use Table 1-3 to make high and
low alarm connections. See Figure 1-5 for the terminal block
locations.
Table 1-3: Alarm Connections
Connect Low Alarm:
NO contact
C contact
NC contact
Connect High Alarm:
NO contact
C contact
NC contact
Note: The alarm terminal block has an addition Return connection
that you can use to ground the alarms if desired.
Figure 1-4: Alarm Relay Contact Points
To ALM A Terminal Block:
pin NO
pin C
pin NC
To ALM B Terminal Block:
pin NO
pin C
pin NC
NC
C
NO
Installing Optional Features