American Power Conversion 250 A - Manual (Page 71)

InfraStruXure Power Generation System 61
Customizing and Updating the ATS
How to Connect User Input Contacts and
Relay Outputs to the ATS
Overview
The ATS can monitor external contact closure events. Possible applications include:
• Magnetic contact switches
• Window foil
• Tamper switches
• Heat detectors
• Water sensors
• Pressure sensors
• Building smoke and fire detection systems
You can set input contacts to cause alarm conditions based on their current state in relation to a user-
defined normal state. Relay outputs can map internal alarms and events to outside devices (see
“Contacts & Relays” on page 46 for information about setting up alarms).
Make contact closure connections (NO or NC) at the
user interface circuit board located on the user
connection plate. You can make eight connections—
four input contacts and four relay outputs. The user
connection plate is on the roof of the ATS enclosure.
You can make these connections from inside the enclosure, or you
can remove the user connection plate from the ATS to make the
connections. A Phillips or standard screwdriver is needed to
loosen the two captive screws. Use the knockout in this plate to
route cables to the user interface board. If you decide to remove
the plate, make sure not to disturb the existing connections.
Note
The terminal block on the user interface board accepts wire sizes
from 12 to 30 AWG or 2.5 to 0.2 mm
2
.
1 2 3 4
AT
S
E
N
AT
S
0
AT
S
1
AT
S
2
EPO
Contact
– +
EPO 24V
AC/DC Contact Inputs Contact Outputs
USER INTERFACE
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