Technical Specifications
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Acuity Brands | One Lithonia Way Conyers, GA 30012 Phone: 800.535.2465 www.acuitycontrols.com © 2014-2015 Acuity Brands Lighting, Inc. All rights reserved. 05/20/15
WIRING (DO NOT WIRE HOT)
M(S)P20
(T053)
POWERING CAPACITY
An MP20 power pack’s transformer can supply up to 150 mA of power. Each relay requires 40 mA during the on state. Low voltage remote sensors typically require 3 mA when detecting occupants,
and 0.15 mA when in standby. Therefore, each transformer can handle up to 3 relays (including its own relay). For example, one MP20 can power its relay (40 mA) and 110 mA of external devices.
Because of the ultra low current design of Sensor Switch sensors, up to 14 sensors can be
connected to a single power pack. If multiple power packs are used together, an additional 110 mA is available.
Sensors Sensors w/ -R (aux. relay) option
1 MP20 14 8
1 MP20 w/MSP20 7 6
2 MP20 28 16
Note 1: Only three relays may be controlled with one power pack. If controlling more than three circuits is required, multiple power packs must be used.
Note 2: Only one sensor with auxiliary relay (-R option) is required in most cases. See datasheets on low voltage sensors.
TYPICAL WIRING
The power pack must be connected to a single phase hot and neutral electrical system. For 120 VAC, connect the 18 AWG White wire to Hot, the 18 AWG Black wire to Neutral, and cap off the 18
AWG Orange wire. For 240 or 277 VAC, connect the Orange to Hot, Black to Neutral, and cap off the White wire. Never connect both the White and Orange wires! Low voltage wire can be
18 to 22 AWG, < 2000 ft distance limitation (18 AWG); shielding is not necessary.
LOW VOLTAGE OPERATION AND TEST
The pack’s low voltage wires are color coded: Red (15 VDC), Black (Common), and White (Occupancy Signal). With no sensors connected, touch the Red wire to the White wire. The lights should turn
on. Remove the connection and the lights should turn off. With the sensors connected, the Red and Black wires provide DC power to the remote sensors, and when there is occupancy detected,
the White wire produces a 15 VDC signal from the sensor to the power pack initiating the lights to on. Upon initial power up, the sensors automatically send an on signal until the sensors have
stabilized and their time delays have expired.
N
N
H
LOAD
SWITCH
WHT
BLK/ORN
BLU
BLU
MP20
RED
BLK
WHT
BLK - 120V
ORN - 277V
N
N
RED
BLK
BLK
WHT
MP20 AU
WHT /ORN
RED
RED
LOAD
BLK - 120V
ORN - 277V
SWITCH
H
N N
RED
BLK
WHT
BLK
MP20 AU
WHT/ORN
RED
RED
LOAD
BLK - 120V
ORN - 277V
SWITCH
H
N
RED
BLK
WHT
MSP20 AU
RED
RED
LOAD
SWITCH
H
RED
BLK
WHT
SWITCH
LOAD
N
MP20
BLU
WHT
BLK/ORN
BLU
H
RED
BLK
WHT
N
BLK - 120V
ORN - 277V
One Sensor & One Power/Relay Pack
Multiple Sensors & One Power/Relay Pack
Multiple Power Packs & Secondary Packs