100
PCS100 UPS-I
User Manual
Code Origin Event
Type
GDM Description Event Description
Recommended Action
10
I
W
DC Bus Voltage
Low
Energy Storage voltage is low.
If the charging function is
operating (i.e., the DC
voltage as indicated on the
GDM is increasing) no
action is required. The
system will automatically
recover when the Energy
Storage recharges. The
PCS100 UPS-I must be
Online to enable the Float
Charger. If the Float
Charger is not working
check the LEDs on the
charger PCB
11
I
W
DC Bus
Undervoltage
The Energy Storage voltage is too
low to protect the load.
Note: This fault is not recorded in
the Event Log when the PCS100
UPS-I is offline.
If not already online start
the PCS100 UPS-I and
confirm that Energy
Storage is charging.
Note: The Float Charger is
only enabled when the
PCS100 UPS-I is online.
12
I
F
Zero Seq Current
High
Inverter module zero sequence
current is too high.
Check for earth faults on
the Inverter side of the
Coupling Transformer. A
faulty Inverter module may
need to be replaced.
13
I
F
Zero Seq Abs
Current High
The PCS100 Module’s absolute
zero sequence currents are too
high.
Check for earth faults on
the Inverter side of the
Coupling Transformer. A
faulty Inverter module may
need to be replaced.
14
I
F
Sync Lost Failure
The Inverter lost synchronization
with Auxiliary Master Module.
(1) Check all
communication cables.
(2) Replace faulty module
15
I
F
Sync Lock T/O
The Inverter cannot synchronize
with the Auxiliary Master Module
within the timeout period.
(1) Check all
communication cables.
(2) Replace faulty module
18
S, I
W
Control Loop
Timing
Sustainable internal condition.
Send the Service Log to the
factory for assessment.
If the warning persists
power down and restart
the PCS100 UPS-I.
19
S, I
F
Internal Error
There was an internal error.
Press Reset. If the fault is
not resolved power down
and restart PCS100 UPS-I.
20
S, I
W
Stack Level
Warning
DSP stack has reached 75%
threshold level.
Send the Service Log to the
factory for assessment. If
the warning persists power
down and restart PCS100
UPS-I.
Replace faulty module.
21
I
F
Contactor Activate
T/O
The Inverter module pre-charge
contactor has not opened within
Replace the faulty Inverter
module.