Wiring the Relays Port (RS Models Only)
Connect one or two devices such as room lights, a projector lift, or a motorized screen
(see figure 23) to the Relays port. This port accommodates two relay connections.
To connect a device to one of the relay ports:
1.
Connect the ground wire of the device to pin 3 of the provided 3-pole captive screw
connector.
2.
Connect the signal wire of the device to pin 1 or 2 of the 3-pole connector.
3.
Plug the 3-pole connector into the MLC 3-pole captive screw Relays port.
Example:
In figure 23, a low-voltage controller connected to a motorized screen has been
wired to pins 2 and 3 of the provided 3-pole captive screw plug. When this connector is
plugged into the rear panel Relays port, the device will be connected to the MLC relay
port 2 (pins 2 and Common of the MLC 3-pole Relays connector).
Ground ( )
Ground ( )
Signal
110/220 V
Rx
Tx
GROUND
Tx/IR
COMMON
1
1
2
HOST/
CONFIG
RS-232
DIGITAL
INPU
T
Tx
PW
R
12V
0.2 A MA
X
RELAYS
N/
O
GROUND
GROUND
GROUND
GROUND
+12 VDC
MLC 62 RS D
Rear Panel
Low Voltage
Screen Control
Motorized
Screen
Power
Supply
1
2
3
Pin:
MLC 62 RS D Rear Panel
PORT
B
IR/
S
Figure 23.
Connecting a Motorized Screen to the Relay Port of an MLC RS D
To connect devices to
both
relay ports:
1.
Connect the ground wires of
both
devices to pin 3 of the provided 3-pole captive
screw connector.
2.
Connect the signal wire of one device to pin 2 and the other device to pin 1 of the
3-pole connector.
3.
Plug the 3-pole connector into the MLC Relays port.
To define the operation of a relay and associate it with a button or a digital input, use the
configuration software (see the “Adding relays to buttons” or “Configuring the Digital Input
Port” topics of the program help file for setup procedures).
MLC 60 Series MediaLink Controllers • Features, Installation, and Operation
26
