
APPENDIX
B–62835EN/01
B. ALARM LIST
381
15) SPINDLE ALARMS (ANALOG INTERFACE) (S SERIES ACSPINDLE)
Spindle alarms of Model 1S to 3S
Alarm
No.
Meaning Description Remedy
“A”
display
Program ROM abnormality
(not installed)
Detects abnormality in ROM. Exchange ROM
AL–01 Motor
overheat
Detects motor speed exceeding specified speed ex-
cessively.
Check load status.
Cool motor then reset
alarm.
AL–02 Excessive speed deviation Detects motor speed exceeding specified speed ex-
cessively.
Check load status.
Reset alarm.
AL–03 Defective regenerative
current
Detects that regenerative current has flown longer
than the allowable time.
Reset alarm after checking
cutting condition etc.
AL–04 Not used
AL–05 Not used
AL–06 Excessive speed (Analog) Detects that motot rotation has exceeded 115% of its
rated speed.
Reset alarm.
AL–07 Excessive speed (Digital) Detects that motor rotation has exceeded 115% of its
rated speed.
Reset alarm.
AL–08 High input voltage Detects that input voltage is 230 VAC or higher . Flip switch to 230 VAC.
AL–09 Not used
AL–10 Low input voltage Detects drop in +15V power supply or input power
supply voltage.
Remove cause, then reset
alarm.
AL–11 Overvoltage in DC link section Detects abnormally high direct current power supply
voltage in power circuit section.
Remove cause, then reset
alarm.
AL–12 Overcurrent in DC link section Detects flow of abnormally large current in direct cur-
rent section of power cirtcuit
Check transistor and motor
coils for their grounding, re-
move cause, then reset
alarm.
AL–13 Defectives CPU and
peripherals
Detects abnormal transmission between CPU and
peripherals
Exchange PCB.
AL–14 ROM abnormality Detects abnormality in ROM. Exchange ROM or PCB.
AL–15 Not used
AL–16
AL–17
NVRAM abnormality Detects abnormality in NVRAM for external data. Exchange NVRAM or PCB.
AL–18
to
AL–23
Defectives CPU and
peripherals
Detects abnormal transmission between CPU and
peripherals
Exchange PCB.