Protective
function
Error code No.
Causes Measures
Main Sub
6-14
1. When in Trouble
Protective function (Detail of error code)
Modbus
communication
timeout
protection
80 0 While ensuring Modbus execution right,
Modbus communication against own axis
has not been received for more than the
set time.
• Set Pr5.40 ”Modbus communication timeout
period” to 0 to be disabled or to appropriate
time.
• Check the connection of Modbus
communication.
Forced
alarm input
protection
87 0 Forced alarm input (E-STOP) is applied. Check the wiring of forced alarm input
(E-STOP).
Encoder data
recovery
abnormal
protection
92
0
Initialization process of internal position
information has not conducted normally
under absolute and semi-closed control
mode.
• Secure encoder power supply voltage at
DC5V±5% (4.75 to 5.25V). Care must be
taken when the encoder lines are lengthy.
• If motor wires and encoder wires are
bundled together, separate them.
• Connect shield to FG.
External
scale data
recovery error
protection
1 Internal position information initialization error under
full-closed control and absolute mode with block
operation enabled.
• Secure external scale power supply voltage
of 5 VDC±5% (4.75 to 5.25 V). Please take
extra care in case the cable connecting the
external scale is long.
• In case the motor line and the external
scale connecting cable are bundled together,
separate them.
• Connect shield to FG. Refer to external
scale connecting diagram
Multi-rotation
upper limit
value
inconsistency
error protection
3
At continuous rotating absolute encoder
function, there was a disagreement
between the upper-limit value of encoder
multi-turn data and the upper-limit value
of driver parameter multi-turn data.
• Please conrm the set values of
parameters.
• Reclose the control power supply when this
occurs immediately after closing the control
power supply. (This is not an abnormality.)
Parameter
setup error 1
93
0
1) Electronic gear ratio exceeds the
allowable range.
2) When a block operation was
enabled(Pr 6.28 is non 0), Modbus
connection was disabled (Pr 5.37 is 0).
• Check the setting value of the parameter.
1) When a block operation was enabled
(Pr 6.28 is non 0), Electronic gear ratio
must be in the range 1/1000 to 8000.
2) When a block operation was enabled
(Pr 6.28 is non 0), Modbus connection was
disabled (Pr 5.37 is 0).
Note
• When protective function marked with
*
in the protective function table is activated, it can-
not be disabled by the alarm clear input (A-CLR). To return to the normal operation, turn off
power, remove the cause, and then turn on power again.
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