Alpha Technologies USM2.5 Status Monitor - Manual (Page 21)

5. Operation
21 704-683-B0-004, Rev. D
5.1 USM2.5 Operations
USM2.5 Start up and Test Procedure
The XM Series 2 power supply should be fully tested before attempting any USM2.5 operations.
Refer to the XM Series 2 technical manual for details. Once the power supply has been
verified as “GOOD” the USM2.5 can then be tested as follows:
1. Verify the USM2.5 installation by checking:
• Configuration settings of switch SW1.
• USM2.5 is properly installed onto Communication Module, and that the
Communication Module is correctly installed into the XM Series 2 power supply.
• Tamper switch is properly installed and connected.
• Data cable from the USM2.5 to the transponder is correctly installed.
2. Unplug transponder’s data cable from the USM2.5.
3. Using a true RMS multimeter, verify the USM2.5’s analog data (set by configuration) on
the J4 connector by checking (ground on J4-1):
• Auxiliary DC output on J4-2
• AC Output Voltage Level on J4-4
• Battery Level output on J4-5
• Output Current#1 level on J4-8 (J4-13 for ONU equipped units)
• Output Current#2 level on J4-13 (J4-8 for ONU equipped units)
• AC input voltage level on J4 pin 9
4. Using a true RMS multimeter, verify the USM2.5’s Digital data (set by configuration) on
the J3 connector by checking (ground on J4-1):
• Standby Status Alarm J4-3, active any time inverter in ON.
• Equipment Fail Alarm J4-6, active if test failure or low battery condition.
• Tamper Alarm J4-7, active when the enclosure’s door is open.
NOTE: Removing the output fuse will result will result in a loss of power to the
cable system (load). Do not attempt this test without first transferring the
load to a Service Power Supply.
• Output Alarm J4-10, active when the XM Series 2’s AC output has failed.
5. Verify remote USM2.5 control on the J2 connector by shorting Pin11 to ground (J4-1):
• Test/Reset J4-11, shorted XM Series 2 inverter Test ON, open inverter Test OFF.
NOTE: Successful completion of test steps 1-5 above is a very good indication that the
USM2.5 is operating correctly, if the unit fails any of the tests, repeat the test to verify
failure, and replace USM2.5 as needed.
6. Plug transponder’s data cable back into the USM2.5. Repeat test steps 3-5; local results
should remain the same. If results do NOT remain the same, this is an indication of a
possible transponder failure.
7. Review analog data at status monitoring center. The reported data should be similar to
values seen at the power supply.
8. Initiate an inverter test command from the status monitoring center. The power supply
should go into test as commanded. Monitor command signals from the transponder on
the USM2.5 connector J2 using a multimeter by checking:
• Test/Reset J4-11, active XM Series 2 inverter ON, inactive inverter OFF.
NOTE: Test steps 6-8 are used to verify the transponder and the status monitoring
system, if any of the tests fail; retest, verify failure, troubleshoot status monitoring
system (less USM2.5) as needed.