Delta DPS-500K, User Manual

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4 - 6
Ultron DPS Series
No. Event Description
7 Internal communication failure Power unit’s internal communication is abnormal.
8 External parallel communication
loss In parallel mode, parallel communication is
abnormal.
9 Output overload warning/
shutdown The UPS is overloaded or the UPS shuts down to
let the bypass supply power to the critical loads.
10 Power module fault shutdown The power unit has abnormalities and it shuts
down the UPS to let the bypass supply power to
the critical loads.
11 Power module warning The power unit has abnormalities but the UPS
still runs in normal mode.
12 EPO activated
The EPO button
E P O
was pressed to urgently
power off the UPS.
13 Load on manual bypass The Manual Bypass Switch (Q3) is turned on and
the UPS transfers to manual bypass mode.
14 Battery cabinet over
temperature warning/ shutdown The external battery cabinet’s temperature is too
high.
15 Abnormal inverter voltage The output voltage is too high or too low.
16 Battery needs replacement Battery replacement date is due.
17 Bypass over temperature
warning/ shutdown Bypass static switch temperature is too high.
18 Bypass static switch fault The bypass static switch has open/ short issue.
19 General alarm When any UPS alarm occurs.
20 External battery breaker
shunt trip The UPS will send a signal to trip the external
battery breaker when the EPO button
E P O
is
pressed.
21 Backfeed protection When the UPS has backfeed voltage.