Alarm Relay Contact Information; Table 2-3 Alarm Relay Contact Information - Honeywell UDC2300 Product Manual

Installation

2.4 Alarm Relay Contact Information

Alarm Relays
Alarm relays are designed to operate in a failsafe mode (that is, de-energized during alarm sate). This
results in alarm actuation when power is OFF or when initially applied, until the unit completes self
diagnostics. If power is lost to the unit, the alarms will function.
Unit
Power
Off
On
8

Table 2-3 Alarm Relay Contact Information

Alarm Relay Variable NOT in Alarm State
Wiring
Relay
Contact
N.O. Open
N.C. Closed
N.O. Closed
N.C. Open
UDC2300 Indicator Product Manual
Variable in Alarm State
Indicators Relay
Contact
Off Open
Closed
Open
Off
Closed
Indicators
Off
On
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