APPENDIX
B–63505EN/02
A. ALARM LIST
323
NOTE*1
Note that the meanings of the SPM indications differ
depending on which LED, the red or yellow LED, is on.
When the red LED is on, the SPM indicates a 2–digit alarm
number. When the yellow LED is on, the SPM indicates an
error number that designates a sequence problem (for
example, when a rotation command is entered with the
emergency stop state not released).
³ See Appendix A.4, “Error Codes (Serial Spindle).”
Alarm Numbers and Alarms Displayed on the α Series Spindle Amplifier
SPM
indica-
tion(*1)
Faulty location and remedy Description
A0
A
1 Replace the ROM on the SPM control printed cir-
cuit board.
2 Replace the SPM control printed circuit board.
The program does not start normally.
ROM series error or hardware abnormality on the SPM
control printed circuit board
A1 Replace the SPM control printed circuit board. An abnormality was detected in the CPU peripheral cir-
cuit of the SPM control circuit.
01 1 Check and correct the peripheral temperature and
load status.
2 If the cooling fan stops, replace it.
The thermostat embedded in the motor winding oper-
ated.
The internal temperature of the motor exceeds the spe-
cified level.
The motor is used in excess of the continuous rating, or
the cooling component is abnormal.
02 1 Check and correct the cutting conditions to decrease
the load.
2 Correct parameter No. 4082.
The motor speed cannot follow a specified speed.
An excessive motor load torque is detected.
The acceleration/deceleration time in parameter No.
4082 is insufficient.
03 1 Replace the SPM unit.
2 Check the motor insulation status.
3 Replace the interface cable.
The PSM becomes ready (00 is indicated), but the DC
link voltage is too low in the SPM.
The fuse in the DC link section in the SPM is blown. (The
power device is damaged or the motor is ground–fault.)
The JX1A/JX1B connection cable is abnormal.
04 Check the PSM input power supply status. The PSM detects open phase of power. (PSM alarm in-
dication: 5)
07 Check for a sequence error. (For example, check
whether spindle synchronization was specified when
the spindle could not be turned.)
The motor speed has exceeded 115% of its rated speed.
When the spindle axis was in position control mode,
positional deviations were accumulated excessively
(SFR and SRV were turned off during spindle synchro-
nization.)
09 1 Improve the heat sink cooling status.
2 If the heat sink cooling fan stops, replace the SPM
unit.
Abnormal temperature rise of the power transistor radia-
tor
A.3
ALARMS
(SERIAL SPINDLE)