No. DescriptionFaulty location and remedy
SPM in-
dica-
tion(*1)
Message
9011 SPN_n_ : OVERVOLT
POW CIRCUIT
11 1 Check the selected PSM.
2 Check the input power voltage and
change in power during motor de-
celeration. If the voltage exceeds
253 VAC (for the 200–V system) or
530 VAC (for the 400–V system),
improve the power supply imped-
ance.
Overvoltage of the DC link section of
the PSM was detected. (PSM alarm
indication: 7)
PSM selection error. (The maximum
output specification of the PSM is ex-
ceeded.)
9012 SPN_n_ : OVERCUR-
RENT POW
CIRCUIT
12 1 Check the motor insulation status.
2 Check the spindle parameters.
3 Replace the SPM unit.
The motor output current is abnormal-
ly high.
A motor–specific parameter does not
match the motor model.
Poor motor insulation
9015 SPN_n_ : SP SWITCH
CONTROL
ALARM
15 1 Check and correct the ladder se-
quence.
2 Replace the switching MC.
The switch sequence in spindle
switch/output switch operation is ab-
normal.
The switching MC contact status
check signal and command do not
match.
9016 SPN_n_ : RAM FAULT 16 Replace the SPM control printed cir-
cuit board.
Abnormality in an SPM control circuit
component is detected. (RAM for ex-
ternal data is abnormal.)
9018 SPN_n_ : SUMCHECK
ERROR PGM
DATA
18 Replace the SPM control printed cir-
cuit board.
Abnormality in an SPM control circuit
component is detected. (Program
ROM data is abnormal.)
9019 SPN_n_ : EX OFFSET
CURRENT U
19 Replace the SPM unit. Abnormality in an SPM component is
detected. (The initial value for the U
phase current detection circuit is ab-
normal.)
9020 SPN_n_ : EX OFFSET
CURRENT V
20 Replace the SPM unit. Abnormality in an SPM component is
detected. (The initial value of the V
phase current detection circuit is ab-
normal.)
9021 SPN_n_ : POS SENSOR
POLARITY ER-
ROR
21 Check and correct the parameters.
(No. 4000#0, 4001#4)
The polarity parameter setting of the
position sensor is wrong.
9024 SPN_n_ : SERIAL
TRANSFER
ERROR
24 1 Place the CNC–to–spindle cable
away from the power cable.
2 Replace the cable.
The CNC power is turned off (normal
power–off or broken cable).
An error is detected in communica-
tion data transferred to the CNC.
9027 SPN_n_ : DISCONNECT
POS–CODER
27 1 Replace the cable.
2Re–adjust the BZ sensor signal.
1 The spindle position coder (con-
nector JY4) signal is abnormal.
2 The signal amplitude (connector
JY2) of the MZ or BZ sensor is ab-
normal.
(Unconnected cable, adjustment
error, etc.)
APPENDIX
GFKE-0222-EN
A. ALARM LIST
907