
APPENDIX
B–64124EN/01
G. ALARM LIST
869
No. DescriptionFaulty location and remedy
SPM
indica-
tion(*1)
Message
7n54 SPN_n_ : OVERLOAD
CURRENT
54 Review the load state. An overload current was detected.
7n55 SPN_n_ : POWER LINE
SWITCH ER-
ROR
55 1 Replace the magnetic contactor.
2 Check and correct the sequence.
The power line state signal of the
magnetic contactor for selecting a
spindle or output is abnormal.
7n56 SPN_n_ : INNER COOL-
ING FAN STOP
56 Replace the SPM unit. The cooling fan in the SPM control
circuit stopped.
7n57 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: H)
Thermostat operation or short–time
overload was detected.
The regenerative resistor was dis-
connected, or an abnormal resis-
tance was detected.
7n58 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)
7n59 SPN_n_ : COOLING FAN
STOP IN PSM
59 Replace the SPM unit. The cooling fan in the PSM stopped.
(PSM alarm indication: 2)
7n61 61 Check the parameter settings. An error between the semi–closed
loop and full–closed loop is exces-
sive during use of the dual position
feedback function.
7n65 65 1 Check the parameter settings.
2 Check the sensor connection and
signal.
3 Check the power line connection.
A travel distance is excessive during
pole determination.
7n73 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.
7n74 SPN_n_ : CPU TEST ER-
ROR
74 Replace the SPM control printed–cir-
cuit board.
An error was detected in a CPU test.
7n75 SPN_n_ : CRC ERROR 75 Replace the SPM control printed–cir-
cuit board.
An error was detected in a CRC test.
7n79 SPN_n_ : INITIAL TEST
ERROR
79 Replace the SPM control printed–cir-
cuit 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 parameter.
2 Replace the feedback cable.
3 Adjust the sensor.
The one–rotation signal of the motor
sensor cannot be correctly detected.
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 mo-
tor sensor feedback signal.