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Communication Module for DEC 3+
Controller
GM47242 Circuit Board. Communication module for
all generator set models except 450/500REOZVB and
80--150REOZJD; superseded by GM49791-1.
GM49791-1 Circuit Board. Communication module for
all generator set models. Requires firmware version
1.23 or higher with red controller board or 2.03 or
higher with blue controller board.
When adding the RSA III to the 450/500REOZVB and
80--150REOZJD models, check the part number of the
circuit board in the communication module location.
See Figure 5. Circuit board GM49791-1 must be
installed. GM49791-2 circuit board provides controller
gauge drivers only and does not have a communication
function. Remove GM49791-2 and order GM32644-
KP1 communication module kit that includes the
GM49791-1 circuit board.
1. Communication module or gauge driver board location
(see Communication Module for DEC 3+ Controller
section for variations)
GM32644-B
1
Figure 5 DEC 3 + Controller w ith Installed Comm.
Module (Controller Top View)
Identifying the Communication Module in
the DEC 3+ Controller
If connecting the RSA III to a generator set with a
DEC 3+ controller, the communication module board
must be installed. See Figure 5 for the location of
communication module board. The communication
module is included with RSA III kits GM91356-S5 and
GM91356-S6. The communication module is also
available as a separate kit GM32644-KP1.
RSA III Features
Horn
Alarm Horn. The alarm horn sounds giving a minimum
70 dB at 0.1 m (0.3 ft.) audible alarm when a warning or
shutdown fault condition exists except on high/low
battery voltage or EPS supplying load.
Note: Some controllers have programmable digital
outputs that can be programmed to common
faults and wired to user inputs #1 through #5.
These inputs will activate the horn only if the user
input is defined in RSA III as a fault via SiteTecht
(if the user input is defined as a warning, the horn
will not sound). This is further discussed under
Common Faults later.
Note: The alarm horn sound level may vary depending
upon the mounting configuration.
External Alarm Horn Contacts. The RSA III c ircuit
board provides a set of contacts to power an external
12 VDC user-supplied alarm horn, which will sound in
concert with the on-board horn activation.
Switches with Operating Information
Alarm Silence. Press the Alarm Silence/Lamp Test
switch to quiet the alarm during servicing. The horn will
reactivate upon additional faults. Red LED flashes
slowly.
Lamp Test. Press the Alarm Silence/Lamp Test switch
to test the RSA III indicator LEDs, horn, and relay s.
Keyswitch (RSA III with ATS controls model only).
A two-position key switch located on the front of the
RSA III will be used to enable and disable the ATS test
feature. This switch has positions for Lock and un-Lock
to enable or disable the ATS TEST push buttons
functionality. The key switch is removable only in the
Lock position.
When connected to an MPACr 1000 controller, DIP
switch #1 must be set for a loaded exercise. See the
MPACr 1000 controller operating instructions for
details.
Note: When using a multiple ATS RSA III with fewer
than four ATS, the ATS test controls fill from the
top down.
The multiple ATS version of the RSA III is capable of
displaying the status and faults of up to 4 ATS
simultaneously. On a multiple RSA system, only the
master RSA III device has the capability of displaying
multiple ATS status and faults.
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