Mitsubishi Electric MELSERVO-J4 Instruction Manual page 118

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Alarm No.: F4 Name: Positioning warning
Alarm content
Detail
Detail name
No.
F4.4 Target position (1) A target position was
setting
range error
warning
F4.6 Acceleration (1) An acceleration time
time constant
setting range
error warning
F4.7 Deceleration (1) A deceleration time
time constant
setting range
error warning
F4.9 Home position (1) A home position return
return type
error warning
Target position or acceleration time constant/deceleration time constant was set out of setting range.
Cause
Check the setting
set out of setting range. value of the target
position.
Check the setting
constant was set out of value ([Pr. PT49]) of
setting range. the acceleration time
constant.
Check the setting
constant was set out of value ([Pr. PT50]) of
setting range. the deceleration time
constant.
Check the setting
type was set out of value ([Pr. PT45]) of
setting range. the home position
return type.
Check method Check result
It is out of setting
range.
It is out of setting
range.
It is out of setting
range.
It is not corresponding
to a value for the
home position return
type.
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Action Target
Set the target [Others]
position correctly,
and cancel the
warning (turn on
C_ORST).
Set the [GF]
acceleration time
constant correctly,
and cancel the
warning (turn on
ORST).
Set the
deceleration time
constant correctly,
and cancel the
warning (turn on
ORST).
Set the home
position return type
correctly, and
cancel the warning
(turn on ORST).