Specifications

Section 20 00-02-2003
06-21-10 - 16 -
Configuring Latching and Non-Latching/Fail-safe and Normal Modes
The alarm relays can be configured to operate in a latching or non-latching mode, Fail-safe or
Normal mode.
Latching Mode – When an alarm or shutdown condition is reached, the output
remains in the alarm condition until it is reset.
Non-Latching Mode – The output is automatically reset when the alarm condition no
longer exists.
Fail-safe Mode – Should a loss of power occur, when in fail-safe mode the switch
reverses the relay settings.
Normal Mode – In Normal mode when a power loss occurs, the relays remain in the
states indicated in the diagram below. Normal does not reverse the relay
settings.
NOTE: To differentiate between the “Failsafe” and “Normal” settings on the switch plate, the
teal colored settings indicate failsafe and black settings indicate normal.
PHASE OUT / DISCONTINUED
Check Availability