Crestron GLS-PLS-277 Quick Start Manual

Functional Summary
The GLS-PLS-120/277 is a 3-phase power loss sensor
designed for use with Crestron Green Light
activate Override mode during a power failure. In
response to a signal from the GLS-PLS-120/277, the
lighting system program can be temporarily overridden
while designated emergency lighting circuits are changed
to their override preset levels and unnecessary lighting
and devices are shut down to minimize the demand on
emergency power equipment.
The GLS-PLS-120/277 senses each leg of a 120 or
277 volt 3-phase feed, providing LED indication of the
status of each phase on its front panel. When power is lost
on any phase, the corresponding status LED turns off and
a contact closure is activated on each of two control
outputs. Two isolated control outputs are provided to
allow for interfacing with third-party equipment in
®
addition to the Crestron lighting system. Each contact
closure output is rated for 1 A @ 24 Vdc.
Testing the GLS-PLS-120/277 is facilitated using three
test switches located behind a small door on the front of
the unit. Setting any switch to the TEST position
simulates a loss of power on the corresponding phase leg,
providing a test of the unit's internal circuitry and any
connected equipment.
The steel enclosure is designed for mounting to a vertical
surface. Conduit knockouts are provided on the bottom,
top, and both sides. All electrical connections are made
via screw terminals accessed by removing the front panel.
• Senses loss of power on each leg of a 3-phase
feed
• Used to satisfy UL 924 (Emergency Power
Equipment) requirements
• Works with 120 or 277 volt feeds
• Designed to activate Override mode on Crestron
lighting modules
• Provides two isolated contact closure outputs
• Each output rated 1 A @ 24 Vdc
• Includes built-in test function for each phase input
• Surface mount enclosure with conduit knockouts
Crestron Electronics, Inc.
15 Volvo Drive Rockleigh, NJ 07647
Tel: 888.CRESTRON
Fax: 201.767.7576
www.crestron.com
GLS-PLS-120/277 Physical View
®
systems to
GLS-PLS-120/277
Installation Guide – DOC. 6674B
Specifications subject to
change without notice.
(2020579)
11.13