Pacific Power Source MS SERIES - Page 90

SECTION 6 SERVICE
Pacific Power Source ©2013 6-9 Document # 126050-10 Rev E
Control Term Definitions
IAC
Input AC Normal.
INPUT VOLTS
Line to neutral input voltage.
INPUT LINE FAULT
True when Input voltage is less than 80 % of
nominal or greater than 120 % of nominal or 3
PHASE PRESENT is false.
INPUT AMPS
Input amps from current transformers.
INV OVERTEMP
One of the inverters has overheated.
INV HOLD COMM
Inverter Hold Command.
INV FAULT
Is true when INVERTER HOLD COMM and MXEN
are true and INV TST OK is false. Possible shorted
transistor.
INV TST OK
Inverter test OK indicates that the Inverters, 2 per
phase, are switching at approximately 30 kHz and
no fuses are blown. Does not test the quality of the
sine wave being produced and does not care if
inverter is in current limit.
INV VOLTS
Inverter output voltage. Inverter side of the output
contactor.
INV AMPS
Inverter output amps.
INV O/L
Inverter is in current limit.
LM
Local Master, the FREQUENCY SELECT switch is
not in the SLAVE position.
LS
Local Slave, the FREQUENCY SELECT switch is in
the SLAVE position.
LVPS FAULT
Checks ± 12 VDC on PCB's.
MASTER LAMP
Is lit whenever the FREQUENCY SELECT switch is
not in the SLAVE position.
MASTER EMER OFF
The master cabinet is in an EMER OFF state.
ML
Master on line, at least one Cabinet is a Master.
MOD ENABLE
Modulator enable.
OAC
Output AC Normal.
OFF LAMP
Is lit if Q6, S3 CLOSE COMM and S7 CLOSE
COMM are false.
ON LAMP
Is lit if S5 CLOSE COMM is true.
OSC IN
Oscillator signal.