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15. Verify that the Module Harness is connected.
On all RPM modules that are connected and pow-
ered, the LED should blink once a 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 set to the correct address as
Figure 3 - HWI-MI-120 Detail
ADDRESS
1
2
3
4
+
-
COM +15 MUX MUX
1
2
3
4
ADDRESS
+
-
COM +15 MUX MUX
24 VAC
Input
Power
Indicator
LED
+ -
16–24 AWG
(0.5mm
2
–1.5mm
2
)
Wiring
Manual
Override
Switch
programmed in the HomeWorks
Utility. Verify that the Module Interface is connected
to the correct processor on Link 1. Verify that the
processor is properly addressed. Verify that the
keypad is properly addressed and connected to
the correct processor and correct link.
Module
Harness
Connector
Processor
Communication
Link
Module Interface
Communication LED
1
2
3
4
MI Heartbeat LED
ADDRESS
Processor
COM +15 MUX MUX
Communication LED
4 - MUX
3 - MUX
1 - COM
3
4
LT-1 Terminator (if needed)
LT-1 Terminator (if needed)
NOTE: The LT-1 should be
NOTE: The LT-1 should be
installed on the LAST
installed on the LAST
Module Interface (furthest
Module Interface (furthest
from the processor).
from the processor).
Interactive
®
TM
To HWI Processor or
other HWI-MI-120
Module Interfaces
3
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