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APPENDICES
Appendix 1 Error Codes
1BA4H Input axis smoothing time
constant outside range
The value of input axis parameter "[Pr.301] Servo input
axis smoothing time constant" and "[Pr.325] Synchronous
encoder axis smoothing time constant" were set outside
the range of 0 to 5000.
Set the "[Pr.301] Servo input axis type smoothing time
constant", "[Pr.325] Synchronous encoder axis smoothing
time constant" within the range of 0 to 5000.
1BA5H Input axis rotation
direction restriction setting
outside range
The value of "[Pr.304] Servo input axis rotation direction
restriction" and "[Pr.328] Synchronous encoder axis
rotation direction restriction" were set outside the range of
0 to 2.
Set the "[Pr.304] Servo input axis rotation direction
restriction", "[Pr.328] Synchronous encoder axis rotation
direction restriction" within the range of 0 to 2.
1BA6H Input axis module change
overflow
The overflow of internal operation (unit conversion
numerator/unit conversion denominator) occurred
because the unit conversion ratio of input axis is large.
• Reduce the unit conversion ratio of input axis (unit
conversion numerator/unit conversion denominator).
• Slow down the input axis.
1BA7H Servo input axis speed-
position switching control
start impossible
Start speed-position switching control when the status of
"[Rq.1152 Feed current value update request command]"
is OFF, or when the input axis parameter "[Pr.300] Servo
input axis type" is the feed/actual current value.
• Set the [Pr.300] "Servo input axis type" as the servo
command value or the feedback value.
• Start the speed-position switching control after setting
the "[Rq.1152] feed current value update command" to
ON.
1BA8H Serial ABS synchronous
encoder communication
error
• Encoder hardware error.
• Encoder cable is open.
• The synchronous encoder specified in system setting
differs from the synchronous encoder actually
connected.
• Check (module change) the encoder.
• Check the encoder cable.
• Set the synchronous encoder actually connected in the
system setting.
1BA9H Serial ABS synchronous
encoder battery error
No battery in the servo amplifier which connected the
synchronous encoder, or the battery cable is
disconnected.
Replace the battery and check the servo amplifier
(module replace).
1BAAH Synchronous encoder via
servo amplifier invalid
error
The axis set in synchronous encoder via servo amplifier
does not support the synchronous encoder via servo
amplifier.
Connect the servo amplifier which supports the
synchronous encoder via servo amplifier.
1BABH Serial ABS synchronous
encoder initial
communication error
• Encoder hardware is failure when the multiple CPU
system power is ON.
• The encoder cable is disconnected when the multiple
CPU system power is ON.
• The synchronous encoder specified in system setting
differs from the synchronous encoder actually
connected when the multiple CPU system power is ON.
• Check (module change) the encoder.
• Check the encoder cable.
• Set the synchronous encoder connected actually in the
system setting.
1BDDH Synchronous encoder via
sensing module
communication error
• Encoder hardware error.
• Encoder cable is open.
• Check (module change) the encoder.
• Check the encoder cable.
1BDEH Slave CPU synchronous
encoder transfer invalid
The axis that input axis parameter "[Pr.320] Synchronous
encoder axis type" has been set cannot be connected in
master CPU.
Keep the connection status for the input axis of the
specif
ied mast
er CPU.
1BDFH Servo input axis speed
control () start impossible
Start speed control () when input axis parameter
"[Pr.300] Servo input axis type" is not invalid.
Set the "[Pr.300] Servo input axis type to be invalid". (Use
the speed-torque control function when operating the
speed control that does not include positioning loops.)
1BE0H Main input axis number
outside range
• The setting value of synchronous parameter "[Pr.400]
Main input axis number" is outside the setting range.
• The same servo input axis number as the output axis is
set in the synchronous parameter "[Pr.400] Main input
axis number".
• Set within the range.
• Set the servo input axis number that is different from the
output axis.
1BE1H Sub input axis number
outside range
• The setting value of "[Pr.401] Sub input axis number" is
outside the setting range.
• The same servo input axis number as the output axis is
set in the synchronous parameter "[Pr.401] Sub input
axis number".
• Set within the range.
• Set the servo input axis number that is different from the
output axis.
1BE2H Main shaft gear
denominator outside range
Set the value of synchronous parameter "[Pr.404] Main
shaft gear denominator" less than 0.
Set within the range of 1 to 2147483647.
1BE3H Main shaft gear operation
overflow
The input value is overflowed (sign reverse) because the
gear ratio of main shaft gear is large.
• Reduce the absolute value of synchronous parameter
"[Pr.403] Main shaft gear numerator".
• Increase the synchronous parameter "[Pr.404] Main
shaft gear denominator".
• Slow down the input axis speed.
1BE4H Main shaft clutch control
setting outside range
The value of synchronous parameter "[Pr.405] Main shaft
clutch control setting" is set outside range.
Set within the range.
Error
code
Error name Error details and cause Corrective action
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