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6
System Wiring – Single MDU
C O N N E C T I N G W I R E S T O T H E M D U T E R M I N A L B L O C K
The terminal block located at the bottom of the MDU is the wire
connection point for: power, communication, keypads, and interfaces.
1. Remove terminal block cover by pressing in on the cover and then
pulling downward.
2. Grasp terminal block and pull down to separate from connecting block.
3. Connect wires to the terminal block according to the diagram below.
4. Replace the terminal block and the terminal block cover.
To a Sivoia wall mounted keypad, or a Sivoia interface such as the SV-CCI-GRP
or the SV-GRXI. The CNTRL1 and CNTRL2 wires are polarity sensitive.
Do not connect if there is only one MDU in the system. If there are
multiple MDU's in the system,the MDU's must be wired together. Connect the
MUX, Common, and MUX terminals of each MDU together in a daisy chain or
homerun configuration.
Wire to a Sivoia 100VA plug-in transformer, junction box mount transformer,
or a Sivoia power panel. Each MDU must be EARTH grounded. One Sivoia
transformer can power ONLY ONE MDU regardless of drapery size.
Wire Type
Control
Comm Link
Power Wires
Comm & Power
B & C combined
in one cable
SV-IR
Extension Cable
Description
A
2 conductors / #22-24 AWG
3 conductors (2 shielded, 1 common)
B
#24 AWG Belden
wire model #1883A
®
3 conductors:
C
2 / #18-22 AWG (24 VAC power supply)
1 / #18-22 AWG (earth ground)
6 conductors:
D
2 / #16 AWG (24 VAC power supply)
1 / #18 AWG (earth ground)
3 #22 AWG shielded + 1 #24 AWG
common (comm link)
(Lutron wire part no. SV-CBL-MDU-250)
3 conductors #22 AWG
E
Lutron model # SV-IR-EXT-10
Sivoia
Drapery
®
E
IR Connector
1 2 3 4 5 6 7 8
Control
A
Comm
B
B
Link
C
Power
Supply
Maximum Length
Control to MDU: 250 ft.(76 m)
4000 ft. (1333 m) per system
1000 ft. (333 m) from MDU to MDU
Transformer to MDU:
#18 AWG - 150 ft. (46 m)
#20 AWG - 100 ft. (31 m)
#22 AWG - 60 ft. (18 m)
MDU to Sivoia power panel:
200 ft. (61 m)
50 ft. (15 m) per system -
total of 5 SV-IR-EXT-10, 10 ft.
(3 m) each
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