Douglas Lighting Controls WRS-2224 Manual de instrucciones - Página 5

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Specifications

Specifications
General
Power:
n
24VAC / 50mA Class 2 Low Voltage device.
Power rating does not include power used to switch relays.
Master Switches:
n
There are 5 master switch inputs that are compatible
with all models of Douglas relay switches.
A maximum of 6 switches can be connected in parallel to
the same master switch input.
Maximum wire length for a master switch is 2000'.
(600m) if using 18 AWG wire.
Digital Link:
n
Programmable scanners have a digital link socket
that permits connection of network communication
modules.
Outputs
24 Douglas relay outputs.
n
Outputs fire in sequence (<4 seconds) to prevent
n
overloads in the line and low voltage circuits.
Connect a maximum of 4 relays to each output. Maximum
n
wire length per output is 500' (150m).
Relay outputs are isolated from each other. The pulse of a
n
local switch connected to a relay on an output will not
pass through the scanner to a relay connected on
another output.
WRS-2224: Directions & Applications
Programming
Use the membrane keypad built into the face of
n
the programmable relay scanner to assign relay
groups to each of the master switch inputs.
Program settings (relay groups) are not lost in the
n
event of a power outage.
Programming directions are printed into the front
n
cover for handy reference.
Environment
Indoors, stationary, non-vibrating, non-corrosive
n
atmosphere and non-condensing humidity.
Ambient operating temperature:
n
0
O
F to +120
0
F (-15
page 3
O
to +50
O
C).
DOUGLAS
lighting controls