Crestron electronic Green Light GLPS-HSW-FT - Manual (Page 73)

Crestron Commercial Lighting Design Guide
69
Accessories
GLA-ESR
The GLA-ESR emergency bypass/shunt relay is designed for applications that require an
emergency load to be switched on during a loss of normal power. The GLA-ESR is available either
prepackaged in its own NEMA 1 enclosure or as a panel version to be installed inside an existing
enclosure. Models can be ordered with a two position closed/auto override test switch or with a
custom two position momentary on/auto override test switch. This switch can be used to verify
your emergency load is being switched properly during initial field wiring. UL 924 emergency
bypass/shunt relays will switch a lighting load upon loss of normal power downstream of an
emergency transfer switch, bypassing the wall switch position.
GLS-PLS
The GLS-PLS is a 3-phase power loss sensor designed for use with Crestron Green Light systems
to activate Override mode during a power failure. In response to a signal from the GLS-PLS, the
lighting system program can be temporarily overridden while designated emergency lighting
circuits are changed to their override preset levels and unnecessary lighting and other devices are
shut down to minimize the demand on emergency power equipment.
The GLS-PLS 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 1A at 24 Volts DC.
Testing the GLS-PLS-120/277 is facilitated using three test switches located behind a small cover
plate 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.
UL924
Underwriters Laboratories specifies safety standards for emergency lighting and power equipment
under UL924. The GLS-PLS power loss sensor will help satisfy UL924 requirements.
GLA-UPS
The GLA-UPS Uninterruptible Power Supply provides the highest level of protection for Crestron Green Light installations. It includes
reliable battery backup, surge protection and EMI/RFI line noise filtering. In the event of a power failure, the GLA-UPS includes an auto-
restart feature that eliminates the need to perform an on-site restart of the system. In addition, the GLA-UPS features a recycle/reset
button with sequential outlet start-up for proper system rebooting.
x 60-second delay-on AC outlet
x Battery backup, 1038 Joules of surge protection and EMI/RFI filtering
x 3 widely-spaced AC outlets Recycle/reset button with sequential outlet start-up
x IEC power input connector accepts included 6-inch power cord
x Diagnostic/Overload LEDs
x Resettable circuit breaker prevents dangerous system overloads
x Auto-restart capability eliminates the need to perform an on-site restart
x 550VA/300 Watts standby UPS system