
APPENDIXG. ALARM LIST
B–64124EN/01
870
No. DescriptionFaulty location and remedy
SPM
indica-
tion(*1)
Message
7n84 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.
7n85 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.
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.
7n89 89 1 Check the connection in the SPM
and sub–module SM.
2 Replace the sub–module SM.
3 Replace the SPM control printed
circuit board.
The sub–module SM is abnormal.
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
9001 SPN_n_ : MOTOR
OVERHEAT
01 1 Check and correct the peripheral
temperature and load status.
2 If the cooling fan stops, replace it.
The internal temperature of the motor
exceeds the specified level.
The motor is used in excess of the
continuous rating, or the cooling
component is abnormal.
9002 SPN_n_ : EX SPEED ER-
ROR
02 1 Check and correct the cutting
conditions to decrease the load.
2 Correct parameter No. 4082.
The motor speed cannot follow a spe-
cified speed.
An excessive motor load torque is de-
tected.
The acceleration/deceleration time in
parameter No. 4082 is insufficient.