PCS100 UPS-I
User Manual
105
been activated through
parameter: 915 Relay Test Mode
mode.
84
S
F
Negative Phase
Rotation
Negative phase rotation detected Check the input phases are
wired to the correct input
86
S,I
F
Not Passed Tester This fault occurs when a module
has:
(1) not passed the factory test or
(2) failed since leaving the
factory.
Replace the faulty module.
87
S,I
F
IRQ Frequency
Error
Software task IRQ not occurring
at correct frequency.
(1) Send Service Log to the
factory for assessment
(2) Replace the module
88
S
F
Serial Number
Error
The system (product) serial
number is invalid.
Replace the Auxiliary
Master Module auxiliary
module as a complete unit.
90
I
W
Heatsink Cold
Inverter heatsink temperature
sensor error or too cold.
(1) Check ambient
temperature.
(2) Replace the module.
91
I
W
Enclosure Cold
Inverter Enclosure temperature
sensor error or too cold.
(1) Check ambient
temperature.
(2) Replace the module.
93
S
F
SCR Stack Failure The SCR (Silicon Controlled
Rectifier) firing board has
detected an absence of SCR
trigger current. Note: This fault
does not reset itself.
Note: When this fault occurs LED
2 on the Utility Disconnect
interface board and LED 12 on the
SCR firing board extinguishes.
Check the LEDs on the SCR
firing board to narrow
down the source of the
problem (see the Service
guide document number
2UCD120000E409).Check
SCR gate wiring. Check
SCRs. Replace SCR firing
board. Check the severe-
over-temperature sensor
and connection.
106
S
F
Stop Button
Override
The following scenario has
occurred:
(1) Parameter 541 Start Command
is set to “GDM has Priority” and
(2) The GDM’s Stop button is
pressed when the PCS100 UPS1-I
is started from another location
e.g. control room.
Note: This sequence of events
causes a trip.
Press the Reset button and
press “yes” at the
confirmation screen to
reset the fault.
108
I
F
RFI Lead
Misconfiguration
Wrong module present in system. Check the part number of
the Inverter is correct for
this machine.