Fanuc Power Mate i-D/H Maintenance Manual

B63175EN/03
H. FSSB STARTUP PROCEDURE/
MATERIALS
APPENDIX
637
Alarms related to servo amplifiers
NC
alarm
No.
Message Description
430 n AXIS : SV. MOTOR
OVERHEAT
A servo module overheat occurred.
431 n AXIS : CNV.
OVERLOAD
A converter (PSM) overheat occurred.
432 n AXIS : CNV. LOWVOLT
CON./POWFAULT
The control power supply voltage (24
V) has dropped.
433 n AXIS : CNV. LOW VOLT
DC LINK
The DC link voltage has dropped.
436 n AXIS : SOFTTHERMAL
(OVC)
The digital servo software detected the
soft thermal state (OVC).
438 n AXIS : INV. ABNORMAL
CURRENT
The current of the main circuit is too
high.
439 n AXIS : CNV.
OVERVOLT POWER
The DC link voltage is too high.
440 n AXIS : CNV. EX
DECELERATION POW.
The regenerative discharge amount is
too high.
441 n AXIS : ABNORMAL
CURRENT OFFSET
The digital servo software detected an
abnormality in the motor current
detection circuit.
443 n AXIS : CNV. COOLING
FAN FAILURE
The internal stirring fan failed.
445 n AXIS : SOFT
DISCONNECT ALARM
The digital servo software detected a
broken wire in the detector.
446 n AXIS : HARD
DISCONNECT ALARM
A broken wire in the builtin pulse
coder was detected by
hardware(NOTE).
447 n AXIS : HARD
DISCONNECT (EXT)
A broken wire in the separate detector
was detected by hardware.
448 n AXIS : UNMATCHED
FEEDBACK ALARM
The sign of feedback data from the
builtin pulse coder differs from the
sign of the feedback data from the
separate detector.
NOTE
FBAL (bit 1 of alarm 1) may be set to 1 in the following cases:
S Hard broken wire in the separate pulse coder (bit 1 of
alarm 1 = 1, bit 7 of alarm 2 = 1, bit 4 of alarm 2 = 1
S Soft broken wire (bit 1 of alarm 1 = 1)
S Count error alarm (bit 1 of alarm 1 = 1, bit 7 of alarm 2 =
1, bit 3 of alarm 3 = 1)

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