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3. Connect Harness to Modules. Starting with mod-
ule #1, connect the module harness to each mod-
ule that is installed. Any harness connections that
remain after all installed modules are connected
should be coiled and secured above the last mod-
ule.
Danger - Harness must be secured such that it
cannot come into contact with primary (line
voltage) AC wiring.
4. Set Module Interface Address. Set the rotary
switch on the Module Interface to the address
assigned in the HomeWorks Interactive Utility (see
Figure 1).
5. Connect Communication Wiring. Connect the
control wiring to the processor communication link
terminal block on the lower end of the Module
Interface board (see Figure 3). The processor com-
munication link must be connected in a daisy chain
configuration with a maximum total cable length of
1000 feet (300m). Connect terminals 1, 3 and 4
(Common, MUX, MUX) to the 4-position terminal
block (see Figure 3). DO NOT connect terminal 2
(+15V) because the Module Interface is powered
from the transformer inside its enclosure.
6. Terminate the processor communication link on
the last Module Interface. If any of the Module
Interfaces are located more than 50 feet (15.25m)
from the processor, the last Module Interface on
the chain must utilize a terminator across terminals
3 and 4. LT-1 terminators that are included with the
processor may be used for this application (see
Figure 3). If LT-1 terminators are unavailable, a 1/4
Watt resistor between 100 and 150 ohms may be
placed from terminal 3 to terminal 4 to provide ter-
mination. Termination at the processor end of the
chain is included on the processor board so an LT-1
is not required.
7. Connect Input Power. Connect the power input
plug (black and white wires) into the control feed
harness that comes pre-installed in the enclosure
(see Figures 1 and 2).
8. (Recommended) Connect manual override
cable to the terminal blocks as shown in Figure
3. The manual override scene (as programmed in
the HomeWorks
Interactive
®
all modules connected to the Module Interface by
closing the manual override switch wired between
the two terminals (see Figure 3). A toggle switch is
provided with each HomeWorks
Processor for this purpose. For maximum reliability,
group Module Interfaces on a single switch. This
arrangement should have the switch and all of the
Module Interfaces wired in parallel (see Figure 3).
Note: Proper polarity must be maintained across
all units. For manual override cable runs less than
1000 feet (300m) connected to a single Module
Interface, 16–24 AWG (0.5–1.5mm
used. For manual override cable runs exceeding
2
Utility) is activated for
TM
Interactive
®
TM
2
) wiring can be
1000 feet (300m) or those connected to multiple
Module Interfaces, 16–18 AWG (1.0–1.5mm
wiring must be used. If the installer chooses to use
their own switch, the switch must be rated for
switching at least 50mA @ 28VDC. For switching
multiple Module Interfaces the switch must be rated
for switching the sum of the current for all of the
Module Interfaces connected (e.g., 6 Module
Interfaces wired to a single override switch would
require a switch rated for 300mA @ 28VDC).
9. Program Override Scene. The manual override
levels can be programmed using the HomeWorks
Interactive
Utility in the Load Schedule screen.
TM
10. Turn Power ON. Restore the supply circuit breaker
to the ON position.
11. Verify that the power LED is ON (see Figure 3).
If the "power indicator" LED is ON, proceed to step
12. If it is not ON, and other LEDs on the Module
Interface are ON, terminal 2 in the processor com-
munication link terminal block is connected when it
should not be. Remove the connection to terminal 2
before proceeding. If all LEDs on the Module
Interface are OFF, verify that the 24VAC terminals
from the transformer are connected to the board,
the power plug for the Module Interface is plugged
in and wired to the enclosure terminal blocks, and
that the AC circuit breaker is turned ON.
12. Verify that the Module Interface is functional.
The "heartbeat" LED should flash whenever the unit
is powered (see Figure 3). If the "heartbeat" LED is
not flashing on a unit that has the "power" LED
turned ON, contact Lutron Technical Support.
13. Verify processor and module communications.
If the "processor communications" LED (see Figure
3) is flashing, proceed to Step 14. If it is not flash-
ing, recheck the connections at the Processor
Communication Link terminal block. Verify that the
processor is powered and has a valid database.
The green "TX" LED on the processor's Link 1
(refer to processor label) should be flashing. If it is
not, refer to processor troubleshooting information
in the instructions for the processor and in the
online help in the HomeWorks Interactive Utility.
If the "TX" LED on Link 1 of the processor is flash-
ing, recheck the connections on Link 1 at the
processor and at all of the Module Interfaces con-
nected to that link. Verify that only one LT-1 Link
Terminator is installed on the link and that it is
installed at the last Module Interface in the daisy
chain.
14. Verify module communications. If the "Module
Communications" LED is flashing (see Figure 3),
proceed to Step 15. If it is not flashing, verify that
the MUX and MUX connections (terminals 3 & 4)
are not reversed. If the LED remains OFF, review
troubleshooting instructions in Step 13.
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