
APPENDIX
B–62755EN/01
B. ALARM LIST
457
Alarm
No.
RemedyDescriptionMeaning
AL–31 Speed detection signal dis-
connection motor restraint
alarm or motor is clamped.
Detects that motor cannot rotate at specified speed
or it is detected that the motor is clamped. (but ro-
tates at very slow speed or has stopped).
(This includes checking of speed detection signal
cable.)
Remove cause, then reset
alarm.
AL–32 Abnormality in RAM inside the
LSI used for serial data trans-
fer. This check is made only
when power is turned on.
Detects abnormality in RAM inside the LSI used for
serial data transfer. This check is made only when
power is turned on.
Remove cause, then reset
alarm.
AL–33 Insufficient DC link section
charging
Detects insufficient charging of direct current power
supply voltage in power circuit section when mag-
netic contactor in amplifier is turned on (such as
open phase and defectifve charging resistor).
Remove cause, then reset
alarm.
AL–34 Parameter data setting be-
yond allowable range of val-
ues
Detects parameter data set beyond allowable range
of values.
Set correct data.
AL–35 Excessive gear ratio data set-
ting
Detects gear ratio data set beyond allowable range
of values.
Set correct data.
AL–36 Error counter overflow Detects error counter overflow. Correct cause, then reset
alarm.
AL–37 Speed detector parameter set-
ting error
Detects incorrect setting of parameter for number of
speed detection pulses.
Set correct data.
AL–39 Alarm for indicating failure in
detecting 1–rotation signal for
Cs contouring control
Detects 1–rotaion signal detection failure in Cs con-
touring contorl.
Make 1–rotaion signal ad-
justment.
Check cable shield status.
AL–40 Alarm for indicating 1–rotation
signal for Cs contouring con-
trol not detected
Detects that 1–rotation signal has not occurred in Cs
contouring control.
Make 1–rotaion signal ad-
justment.
AL–41 Alarm for indicating failure in
detecting position coder 1–ro-
taion signal.
Detects failure in detecting position coder 1–rotation
signal.
Make signal adjustment for
signal conversion circuit.
Check cable shield status.
AL–42 Alarm for indicating position
coder 1–rotation signal not de-
tected
Detects that position coder 1–rotation signal has not
issued.
Make 1–rotation signal ad-
justment for signal conver-
sion circuit.
AL–43 Alarm for indicating discon-
nection of position coder signal
for differential speed mode
Detects that main spindle position coder signal used
for differential speed mode is not connected yet (or
is disconnected).
Check that main spindle
position coder signal is
connected to connector
CN12.
AL–46 Alarm for indicating failure in
detecting position coder
1–rotation signal in thread cut-
ting operation.
Detects failure in detecting position coder 1–rotation
signasl in thread cutting operation.
Make 1–rotation signal ad-
justment for signal conver-
sion circuit.
Check cable shield status.
AL–47 Position coder signal ab-
normality
Detects incorrect position coder signal count opera-
tion.
Make signal adjustment for
signal conversion circuit.
Check cable shield status.