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HWI-MI-120
HomeWorks® Module
Installation Instructions
Please Read Before Installing
1. Mount HWI-MI-120 in panel.
See Figure 2 for lo ca tions.
a. For Surface Mounted Enclosures - Use No. 8 nuts and bolts with washers
(provided).
b. For Recess Mounted Enclosures - Use No. 12 self-tapping screws
(provided).
WARNING: Shock Hazard. To avoid the risk of electric shock, locate
2. Connect Module Wire Harness. Connect the 4 conductor wire harness that is
3. Connect Harness to Modules. Starting with module #1, connect the module
WARNING: Shock Hazard. Harness must be secured such that it
4. Set Module Interface Address. Set the rotary address switch on the Module
5. Connect Communication Wiring. Connect the control wiring to the
6. Terminate the processor communication link on the last Module
(15.25 m) from the processor, the last Module Interface on the chain must
and remove fuse or lock circuit breaker in the OFF position before
proceeding. Wiring with power ON could result in serious injury or
death.
shipped inside the Module Interface assembly to the module harness connector
on top of the circuit board (see Figure 1). Note: The end of the harness that
has two purple and two white wires is the correct end to attach to the Module
Interface. Feed the end of the harness through the module harness hole on the
top end of the assembly and connect to module harness connector (see Figure 1).
Figure 1 - HWI-MI-120
Power Input
Plug
Manual Override
Connection
Rotary Address Switch
Module
Harness Hole
harness to each module that is installed. Any harness connections that remain
after all installed modules are connected should be coiled and secured above
the last module.
cannot come into contact with primary (line voltage) AC wiring. Failure
to do so could cause death or serious personal injury.
Interface to the address assigned in the HomeWorks software (see Figure 1).
processor communication link terminal block on the lower end of the Module
Interface board (see Figure 3). The processor com munication link must be
con nect ed in a daisy chain con fig u ra tion with a maximum total cable length
of 1000 ft (300 m). Connect terminals 1, 3 and 4 (Common, MUX, MUX) to the
4-position terminal block (see Figure 3). DO NOT connect terminal 2 because
the Module Interface is powered from the trans form er inside its enclosure.
Interface. If any of the Module Interfaces are located more than 50 ft
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 0.25 W resistor between 100 and 150 ohms may be
placed from terminal 3 to terminal 4 to provide termination. Termination at the
processor end of the chain is included on HomeWorks 8 Series processor
boards so an LT-1 is not required. On HomeWorks QS processors, link
termination is required at the processor.
Technical Assistance:
U.S.A./Canada: 1.800.523.9466
México: +1.888.235.2910
Other Countries: +1.610.282.3800
24 hours a day, 7 days a week.
Lutron Elec tron ics Co., Inc.
7200 Suter Road
Coopersburg, PA 18036-1299
Made and print ed in the U.S.A. 10/2010 P/N 043-368 Rev. A
Interface Assembly
Input: 120 V 50/60 Hz
Typical Power Consumption: 2 W
Module Harness
Connector (RPM Link)
Processor
Communication Link
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 software) is activated for all modules connected to the Module
Interface by closing the manual override switch wired between the two
terminals (see Figure 3). 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 ft (300 m) connected to a single Module
Interface, 16 to 24 AWG (0.5 to 1.5 mm2) wiring can be used. For manual
override cable runs exceeding 1000 feet (300 m) or those connected to
multiple Module Interfaces, 16 to 18 AWG (1.0 to 1.5 mm2) wiring must
be used. If the installer chooses to use their own switch, the switch must
be rated for switching at least 50 mA at 28 V
. 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 300 mA at
28 V
).
9. Program Override Scene. The manual override levels can be programmed
using the HomeWorks software.
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 communication 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 24 V 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 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 com mu ni ca tions. If the “Processor
Communications” LED (see Figure 3) is flashing, proceed to Step 14. If it
is not flashing, verify 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 (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 software.
If the “TX” LED on the processor Link is flashing, verify the connections on
the processor Link and at all of the Module Interfaces connected 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.
15. Verify that the Module Harness is connected. On all RPM modules that
are connected and powered, the LED should blink once per second. If the
RPM’s LED blinks fast 4 times, followed by a 5 second pause, blinks fast 4
times, etc., that is an indication that the Module Interface is in manual override. Refer to Step 8 for more information on manual override. If the RPM
LED blinks only once every 7 seconds, the RPM is not communicating with
the Module Interface.
16. If operation of modules seem inconsistent with keypad button programming, verify that the Module Interface is connected to the correct pro-
cessor Link. Verify that the processor and module is properly addressed.
Verify that the keypad is properly addressed, and connected to the correct
processor and correct link. Verify the RPMs are addressed properly.
Warranty: For warranty information, please see the Warranty enclosed
with the product, or visit www.lutron.com/resiinfo
NEC is a registered trademark of the National Fire Protection Association, Quincy, Massachusetts.
Lutron and HomeWorks are registered trademarks of Lutron Electronics Co., Inc.
© 2010 Lutron Electronics Co., Inc.
Figure 2 - Module Location
Preferred Power
Wiring Entry
Alternate Power
Wiring Entry
8 Module Panel
Figure 3 - HWI-MI-120 Detail
Module
Location
(8 total)
HWI-MI-120
Module Interface
Control Wiring
(NEC® Class 2)
Preferred Power
Wiring Entry
Alternate Power
Wiring Entry
Power
Indicator
LED
16 to 24 AWG
(0.5 to 1.5 mm2)
Wiring
5 Module Panel
24 V
Input
Manual
Override
Switch
Module
Location
(5 total)
HWI-MI-120
Module
Interface
Control
Wiring
(Class 2)
Module Harness
Connector
Preferred Power
Wiring Entry
Alternate Power
Wiring Entry
Processor
Communication
Link
Module Interface
Communication LED
MI Heartbeat LED
Processor
Communication LED
4 - MUX
3 - MUX
1 - COM
LT-1 Terminator (if needed)
LT-1 Terminator (if needed)
NOTE: The LT-1 should
NOTE: The LT-1 should
be installed on the LAST
be installed on the LAST
Module Interface (furthest
Module Interface (furthest
from the processor).
from the processor).
To HomeWorks
Processor or other
HWI-MI-120
Module Interfaces
2 Module Panel
Module
Location
(2 total)
HWI-MI-120
Module
Interface
Control
Wiring
(Class 2)
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