
APPENDIXA. ALARM LIST
B–63175EN/03
498
No. RemedyDescriptionMeaning
Alarm
No.
Message
7n33 SPN_n_ : SHORTAGE
POWER
CHARGE
AL–33 Insufficient DC
link section
charging
Detects insufficient charging of
direct current power supply
voltage in power circuit section
when magnetic contactor in
amplifier is turned on (such as
open phase and defectifve
charging resistor).
Remove cause, then reset
alarm.
7n34 SPN_n_ : PARAMETER
SETTING ER-
ROR
AL–34 Parameter
data setting
beyond
allowable
range of values
Detects parameter data set
beyond allowable range of
values.
Set correct data.
7n35 SPN_n_ : EX SETTING
GEAR RATIO
AL–35 Excessive
gear ratio data
setting
Detects gear ratio data set
beyond allowable range of
values.
Set correct data.
7n36 SPN_n_ : OVERFLOW
ERROR
COUNTER
AL–36 Error counter
overflow
Detects error counter overflow. Correct cause, then reset
alarm.
7n37 SPN_n_ : SPEED DE-
TECT PAR.
ERROR
AL–37 Speed
detector
parameter
setting error
Detects incorrect setting of
parameter for number of
speed detection pulses.
Set correct data.
7n41 SPN_n_ : 1–ROT POS–
CODER ER-
ROR
AL–41 Alarm for
indicating
failure in
detecting
position coder
1–rotaion
signal.
Detects failure in detecting
position coder 1–rotation
signal.
Make signal adjustment for
signal conversion circuit.
Check cable shield status.
7n42 SPN_n_ : NO 1–ROT.
POS–CODER
DETECT
AL–42 Alarm for
indicating
position coder
1–rotation
signal not
detected
Detects that position coder
1–rotation signal has not
issued.
Make 1–rotation signal
adjustment for signal
conversion circuit.
7n43 SPN_n_ : DISCON. PC
FOR DIF. SP.
MOD.
AL–43 Alarm for
indicating
disconnection
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.
7n44 SPN_n_ : CONTROL
CIRCUIT(AD)
ERROR
AL–44