
APPENDIXG. ALARM LIST
B–63614EN/01
788
No. DescriptionFaulty location and remedy
SPM
indica-
tion(*1)
Message
7n79 SPN_n_ : INITIAL TEST
ERROR
79 Replace the SPM control printed–
circuit board.
An error was detected in an initial
test operation.
7n81 SPN_n_ : 1–ROT MO-
TOR SENSOR
ERROR
81 1 Check and correct the parame-
ter.
2 Replace the feedback cable.
3 Adjust the sensor.
The one–rotation signal of the motor
sensor cannot be correctly de-
tected.
7n82 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.
7n83 SPN_n_ : MOTOR SEN-
SOR SIGNAL
ERROR
83 1 Replace the feedback cable.
2 Adjust the sensor.
An irregularity was detected in a
motor sensor feedback signal.
7n84 SPN_n_ : SPNDL SEN-
SOR DISCON-
NECTED
84 1 Replace the feedback cable.
2 Check the shield processing.
3 Check and correct the connec-
tion.
4 Check and correct the parame-
ter.
5 Adjust the sensor.
The spindle sensor feedback signal
is not present.
7n85 SPN_n_ : 1–ROT SPNDL
SENSOR ER-
ROR
85 1 Check and correct the parame-
ter.
2 Replace the feedback cable.
3 Adjust the sensor.
The one–rotation signal of the
spindle sensor cannot be correctly
detected.
7n86 SPN_n_ : NO 1–ROT
SPNDL SEN-
SOR ERROR
86 1 Replace the feedback cable.
2 Adjust the sensor.
The one–rotation signal of the
spindle sensor is not generated.
7n87 SPN_n_ : SPNDL SEN-
SOR SIGNAL
ERROR
87 The one–rotation signal of the
spindle sensor is not generated.
An irregularity was detected in a
spindle sensor feedback signal.
7n88 SPN_n_ : COOLING RA-
DIFAN FAIL-
URE
88 Replace the SPM external cooling
fan.
The external cooling fan stopped.
7n97 SPN_n_ : OTHER
SPINDLE
ALARM
97 Replace the SPM. Another irregularity was detected.
7n98 SPN_n_ : OTHER CON-
VERTER
ALARM
98 Check the PSM alarm display. A PSM alarm was detected.
No. Message
SPM
indica-
tion(*1)
Faulty location and remedy Description
9n01 SPN_n_ : MOTOR
OVERHEAT
01 1 Check and correct the peripheral
temperature and load status.
2 If the cooling fan stops, replace
it.
The thermostat embedded in the
motor winding operated.
The internal temperature of the mo-
tor exceeds the specified level.
The motor is used in excess of the
continuous rating, or the cooling
component is abnormal.