
APPENDIXG. ALARM LIST
B–63534EN/02
1216
No. DescriptionFaulty location and remedy
SPM in-
dica-
tion(*1)
Message
9n56 SPN_n_ : INNER COOL-
ING FAN STOP
56 Replace the SPM unit. The cooling fan in the SPM control cir-
cuit stopped.
9n57 SPN_n_ : EX DECEL-
ERATION
POWER
57 1 Decrease the acceleration/decel-
eration duty.
2 Check the cooling condition (pe-
ripheral temperature).
3 If the cooling fan stops, replace the
resistor.
4 If the resistance is abnormal, re-
place the resistor.
An overload was detected in the re-
generative resistance. (PSMR alarm
indication: 8)
Thermostat operation or short–time
overload was detected.
The regenerative resistor was dis-
connected, or an abnormal resis-
tance was detected.
9n58 SPN_n_ : OVERLOAD IN
PSM
58 1 Check the PSM cooling status.
2 Replace the PSM unit.
The temperature of the radiator of the
PSM has increased abnormally.
(PSM alarm indication: 3)
9n59 SPN_n_ : COOLING FAN
STOP IN PSM
59 Replace the SPM unit. The cooling fan in the PSM stopped.
(PSM alarm indication: 2)
9n66 SPN_n_ : AMP MODULE
COMMUNICA-
TION
66 1 Replace the cable.
2 Check and correct the connection.
An error was found in communication
between amplifiers.
9n73 SPN_n_ : MOTOR SEN-
SOR DISCON-
NECTED
73 1 Replace the feedback cable.
2 Check the shield processing.
3 Check and correct the connection.
4 Adjust the sensor.
The motor sensor feedback signal is
not present.
9n74 SPN_n_ : CPU TEST ER-
ROR
74 Replace the SPM control printed–cir-
cuit board.
An error was detected in a CPU test.
9n75 SPN_n_ : CRC ERROR 75 Replace the SPM control printed–cir-
cuit board.
An error was detected in a CRC test.
9n79 SPN_n_ : INITIAL TEST
ERROR
79 Replace the SPM control printed–cir-
cuit board.
An error was detected in an initial test
operation.
9n81 SPN_n_ : 1–ROT MO-
TOR SENSOR
ERROR
81 1 Check and correct the parameter.
2 Replace the feedback cable.
3 Adjust the sensor.
The one–rotation signal of the motor
sensor cannot be correctly detected.
9n82 SPN_n_ : NO 1–ROT
MOTOR SEN-
SOR
82 1 Replace the feedback cable.
2 Adjust the sensor.
The one–rotation signal of the motor
sensor is not generated.
9n83 SPN_n_ : MOTOR SEN-
SOR SINGNAL
ERROR
83 1 Replace the feedback cable.
2 Adjust the sensor.
An irregularity was detected in a mo-
tor sensor feedback signal.
9n84 SPN_n_ : SPNDL SEN-
SOR DISCON-
NECTED
84 1 Replace the feedback cable.
2 Check the shield processing.
3 Check and correct the connection.
4 Check and correct the parameter.
5 Adjust the sensor.
The spindle sensor feedback signal is
not present.
9n85 SPN_n_ : 1–ROT SPNDL
SENSOR ER-
ROR
85 1 Check and correct the parameter.
2 Replace the feedback cable.
3 Adjust the sensor.
The one–rotation signal of the spindle
sensor cannot be correctly detected.