Alpha Technologies USM2 - Manual (Page 9)

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©2000 ™
704-587-B0-003 Rev.D
2.2 USM2 Installation, XM2
The optional, USM2 status monitoring upgrade plugs into the XM2 Series 2 Inverter Module. The USM2 can be
configured for various status monitoring interfaces by setting two DIP switches and two jumpers. Status monitoring
interfaces are listed according to their manufacturer, along with the associated parts in Section 3.1. The USM2 also
accommodates a tamper switch assembly to indicate unauthorized enclosure entries.
CAUTION: The USM2 PCB can contain some static sensitive components that could be easily damaged if not handled
properly.
When installing the USM2 use the following procedure:
USM2 Installation Procedure:
1. Remove the XM2 Inverter Module by:
CAUTION: ALWAYS switch the battery breaker OFF prior to removing the Inverter Module.
a) Switch OFF the battery breaker. Disconnect the battery input, and the temp probe cables from the
Inverter Module.
b) Loosen the thumbscrews at the bottom of the Inverter Module.
c) To remove the Inverter Module: grasp ONLY the handle on the right side of the Inverter Module, pull firmly
to release the module from the connector. Slide the module assembly straight out.
2. Install the USM2 on the Inverter Module:
Tools Required: #2 Philips head screwdriver.
a) The 2 x 9 pin Strip Connector (xJ4) needs to be installed onto the Inverter Module. Properly installed strip
connector will be fully seated and firmly in place.
Safety Note: DO NOT install the strip connecter if the USM2 will not be installed.
b) New USM2 will come with two snap-on supports. Position the USM2 over the strip connector and the rear
holes for the supports and carefully push into place. Verify the position of the strip connector, and that
the supports are fully seated into the Inverter Module mounting shield.
c) When replacing a USM2 the supports may already be installed. If so, align the USM2 over the supports
and gently rock onto the strip connector. Verify the position of the strip connector, and that the supports
are fully seated into the Inverter Module mounting shield.
d) Secure the USM2 card to the Inverter Module with two #6 machine screws.
2. Installation