Where to mount the rack, Dimmer room requirements, Wire routing – ETC Sensor3 CE (ESR3) Rack User Manual
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Sensor3 CE Rack (ESR3) Installation Manual
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Where to Mount the Rack
Sensor3 dimmer racks require 25cm of top clearance
for proper airflow through the cabinet. To allow the door
to open sufficiently to install and remove modules,
install the rack with 41cm of front clearance and 15cm
clearance to the left of the door hinge from walls or
other equipment.
Dimmer Room Requirements
•
A main circuit breaker cabinet or other readily
accessible input power disconnect device.
•
A clean (not dusty) temperature-controlled
environment
•
Restricted public access to prevent tampering
•
Soundproofing or performance area separation to
muffle ventilation fan noise
Please see
, for environmental details.
ESR3-12 racks are normally wall-mounted. ESR3-24
racks can be wall or pedestal mounted. ESR3-36 and
ESR3-48 racks are designed to be free standing.
Install racks with the CEM3 about 100cm from the floor. In ESR3-12 and ESR3-24 racks,
the CEM3 is in the bottom slot. In ESR3-36 and ESR3-48 racks, the CEM3 slot is in the
middle.
Wire Routing
Sensor3 racks have access panels at the top and bottom, and conduit knockouts at the
side. Line and load wiring can enter from the top or bottom. Control cables can enter from
the top, bottom or side. Signal and power wiring must be run in separate conduits.
C A U T I O N :
A two-wire circuit with separate phase and neutral conductors is required for
every branch circuit that will be connected to the dimmer rack. Shared neutral
circuit arrangements are not recommended for phase-control dimming systems
due to harmonics and potentially elevated neutral currents in a shared neutral
arrangement.
For retrofit installations where shared neutral circuits are already installed, or track
lighting installations where the track has a shared neutral, consult ETC Technical
Services for rack installation guidelines.
The Neutral of the supply to the dimming system should have at least the same
cross-sectional area as the phase conductors
N o t e :
Additional Sensor3 racks of the same size are
the single exception to the 15cm left clearance
rule. They can be installed side by side without
problems.
Senso
r
Senso
r
Figure 1: Sensor3 rack clearances
150mm
250mm
410mm