MP SERIES™ Battery Backup System for Traffic Signals: MP2000E System
Volume One: Operating Manual
Page 7-5
defective. If the breaker cannot be reset, open the AC input breaker on the MP2000E
and try to reset the breaker. If it still cannot be reset then the PTS is defective. If the
breaker can be reset the see troubleshooting MP2000E in Section 7.b.3.
•
Unplug all devices from the 5-15R duplex outlet. Measure the voltage at the 5-15R
duplex outlet. If voltage is not present, ensure the circuit breaker labeled outlet
receptacle is reset. If the circuit breaker cannot be reset or the circuit breaker is reset
but there still is no voltage at outlet, the PTS is defective.
•
Measure the voltage at the L OUT terminals of the PTS with respect to neutral. If no
voltage is present ensure the upstream utility breaker or fuse is closed, check the
wiring from the PTS to ensure it is connected to the PTS terminal location on the
MP2000E, and then measure the DC voltage on the MP2000E Terminal Block pin 22
(positive) with respect to pin 21 (negative) to ensure the voltage is zero. If the voltage is
not zero then the MP2000E is defective. If the voltage is zero then the PTS is defective.
•
Measure the line voltage on the AC output terminal block of the MP2000E with respect
to neutral. If the voltage is zero see troubleshooting MP2000E in Section 7.b.3..
•
If the voltage is present, enable the MP2000E in buck mode or boost mode. You should
immediately hear the contactor in the PTS engage.
•
If you do not hear the contactor engage, measure the DC voltage on the MP2000E
Terminal Block pin 22 (positive) with respect to pin 21 (negative) to ensure the voltage
is between 40-60VDC. If the voltage is not then the MP2000E is defective. If the voltage
is between 40-60VDC and the contactor has not picked up then the PTS is defective.
•
Measure the voltage at the L OUT terminal block with respect to neutral. If the voltage is
not present the PTS is defective.
7.b.3
MP2000E Battery Back-up System
The MP2000E is a Battery Backup System that under normal operation passes the AC input to
the AC output. If the utility line falls out of tolerance, the unit will disconnect from the AC
utility source and invert the batteries’ DC voltage to an AC voltage to support the load.
7.b.3.1 Troubleshooting the MP2000E Battery Back-up System in Line Mode
•
Ensure the status of the MP2000E is in line mode and no faults are present. If an alarm
or fault is present, see Section 6.b.12 for details on alarms or Section 6.b.13 for details
on faults. If a fault persists when power is cycled by turning the AC breaker off and
back on then the MP2000E is defective. Once the MP2000E is cycled off and then back
on allow 1 minute for the qualification process before checking if the unit is on line.
•
If the unit is in line mode and no faults are present check that the line voltage is
supplied to the output by measuring the output line terminal with respect to neutral. If
voltage is not present then the MP2000E is defective.
