
B–61404E/08
G. ALARM LISTAPPENDIX
671
Alarm
No.
RemedyDescriptionMeaning
AL–24 Serial transfer data error Detects serial transfer data error (such as NC power
supply turned off, etc.)
Remove cause, then reset
alarm.
AL–25 Serial data transfer stopped Detects that serial data transfer has stopped. Remove cause, then reset
alarm.
AL–26 Disconnection of speed detec-
tion signal for Cs contouring
control
Detects abnormality in position coder signal(such as
unconnected cable and parameter setting error).
Remove cause, then reset
alarm.
AL–27 Position coder signal discon-
nection
Detects abnormality in position coder signal (such as
unconnected cable and adjustment error).
Remove cause, then reset
alarm.
AL–28 Disconnection of position
detection signal for Cs contour-
ing control
Detects abnormality in position detection signal for
Cs contouring control (such as unconnected cable
and adjustment error).
Remove cause, then reset
alarm.
AL–29 Short–time overload Detects that overload has been continuously applied
for some period of time (such as restraining motor
shaft in positioning).
Remove cause, then reset
alarm.
AL–30 Input circuit overcurrent Detects overcurrent flowing in input circuit. Remove cause, then reset
alarm.
AL–31 Speed detection signal discon-
nection 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 internal to
LSI for serial data transfer. This
check is made only when pow-
er is turned on.
Detects abnormality in RAM internalto LSI 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 insuffieient charging of direct current power
supply voltage in power circuit section when magnet-
ic contactor in amplifier is turned on (such as open
phase and defectifve charging resistor).
Remove cause, then reset
alarm.
AL–34 Parameter data setting beyond
allowable range of values
Detects parameter data set beyond allowable range
of values.
Set correct data.
AL–35 Excesive gear ratio data set-
ting
Detects gear ratio data set beyond allowable range
of values.
Set correct data.
AL–36 Error counter over flow 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 control
not detected
Detects that 1–rotation signal has not occurred in Cs
contouring control.
Make 1–rotaion signal ad-
justment.