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Installation
4083_en_A
PHOENIX CONTACT
4.5.4
Alarm relay connections
The relay contact, part of the terminal block connector (see
), is
used to detect user-configured events. The switch provides fail open and fail close contacts
(Form C) to form relay circuits based on requirements. If the device is not powered or if an
active alarm is present, the relay de-energizes, initiating the NO and NC states.
The contacts are energized upon power up of the unit and remain energized unless a critical
error occurs. One common application for this output is to raise an alarm if a power failure
or removal of control power occurs.
Содержание 1144175
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