Edwards Signaling EBPS Remote Booster Power Supply - Manual (Page 34)

28 Remote Booster Power Supply Technical Reference Manual
Figure 17: Common trouble relay wiring
NC TROUBLE
CO
M
N
O
OU
T
SE
N CO
TB2
(1)
(1) To booster trouble monitoring device
When using the sense circuit as common trouble relays, the BPS operates as
outlined in the following scenarios.
Scenario 1: Trouble on any non-AC power fault
Result:
• Sense 1 opens.
• An AC power failure closes the trouble contact at 20 seconds and activates
Sense 1 at three hours.
For a wiring example, see Figure 16 on page 27.
Scenario 2: Sense 1 activates all four NAC circuits
Result:
• Sense 1 opens.
• An AC power failure closes the trouble contact at 20 seconds and activates
Sense 1 at three hours.
For a wiring example, see Figure 19 on page 30.
Scenario 3: Sense 1 and Sense 2 are operating with multiple CC1 modules
Result:
• A fault on NAC 1 or NAC 2 causes Sense 1 to open.
• A fault on NAC 3 or NAC 4 causes Sense 2 to open.
• A panel-related fault other than an AC failure (e.g., ground fault or battery
fault) causes Sense 1 and Sense 2 to open.
• An AC power failure closes the trouble contact at 20 seconds and activates
Sense 1 at three hours
For a wiring example, see Figure 20 on page 32.