8-5
8-2 Alarm Table
8
Troubleshooting
42
Absolute encoder overspeed
error
The Servomotor rotation speed exceeds
the specified value when only the battery
power supply of the absolute encoder is
used.
Yes
44 Absolute encoder one-turn counter error A one-turn counter error was detected. No
45 Absolute encoder multi-turn counter error
An absolute encoder multi-turn counter or
incremental encoder phase-AB signal er-
ror was detected.
No
46 Encoder error 1 The Servomotor is faulty. No
47
Absolute encoder status error
The rotation of the absolute encoder is
higher than the specified value.
Yes
48 Encoder phase Z error
A phase-Z pulse was not detected
regularly.
No
49 Encoder PS signal error
A logic error was detected in the PS
signal.
No
58 CPU error 1 The Servo Drive is faulty. No
60 CPU error 2 The Servo Drive is faulty. No
61 CPU error 3 The Servo Drive is faulty. No
62 CPU error 4 The Servo Drive is faulty. No
63 CPU error 5 The Servo Drive is faulty. No
65 Excessive analog input 2
A voltage exceeding the Speed
Command/ Torque Command Input
Overflow Level Setting (Pn71) was
applied to the analog command input
(CN1 pin 16).
Yes
66 Excessive analog input 3
A voltage exceeding the Speed Com-
mand/ Torque Command Input Overflow
Level Setting (Pn71) was applied to the
analog command input (CN1 pin 18).
Yes
73 CPU error 6 The Servo Drive is faulty. No
77 CPU error 7 The Servo Drive is faulty. No
81 CPU error 8 The Servo Drive is faulty. No
94 Encoder error 2 The Servomotor is faulty. No
95 Servomotor non-conformity
The combination of the Servomotor and
Servo Drive is not appropriate.
The encoder was not connected when the
power supply was turned ON.
No
96 CPU error 9 The Servo Drive is faulty. No
97 CPU error 10 The Servo Drive is faulty. No
99 CPU error 11 The Servo Drive is faulty. No
Alarm
code
Error detection function Detection details and cause of error
Alarm reset
possible
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