Panasonic MINAS A5-series Operating Instructions Manual page 279

1. When in Trouble
Protective function (Detail of error code)
Protective Error code No.
function
Main Sub
Position 24 0
Deviation pulses have exceeded the
deviation
setup of Pr0.14.
excess 1) The motor movement has not followed
protection
2) Setup value of Pr0.14 (Position
Velocity 1
The difference between the internal
deviation
positional command speed and actual
excess speed (speed deviation) exceeds the
protection setup vale of Pr6.02.
Note) If the internal positional command
speed is forcibly set to 0 due to
instantaneous stop caused by the
command pulse inhibit input (INH) or
CW/CCW over-travel inhibit input, the
speed deviation rapidly increases at this
moment. Pr6.02 setup value should have
sufficient margin because the speed
deviation also largely increases on the
rising edge of the internal positional
command speed.
*
25 0 Position of load by the external scale and
Hybrid
position of the motor by the encoder slips
deviation
larger than the setup pulses with Pr7B
excess error
(Setup of hybrid deviation excess) at full-
protection closed control.
Over-speed 26 0
The motor rotational speed has exceeded
protection
the setup value of Pr5.13.
2nd Over- 1 The motor rotational speed has exceeded
speed the setup value of Pr6.15.
protection
Causes
the command.
deviation excess setup) is small.
Measures
1) Check that the motor follows to the position
command pulses. Check that the output
toque has not saturated in torque monitor.
Make a gain adjustment. Set up maximum
value to Pr0.13 and Pr5.22. Make a
encoder wiring as per the wiring diagram.
Set up the longer acceleration/deceleration
time. Lower the load and speed.
2) Set up a larger value to Pr0.14.
• Increase the setup value of Pr6.02.
• Lengthen the acceleration/deceleration
time of internal positional command speed,
or improve the follow-up characteristic by
adjusting the gain.
• Disable the excess speed deviation
detection (Pr6.02 = 0).
• Check the connection between the motor
and the load.
• Check the connection between the external
scale and the driver.
• Check that the variation of the motor
position (encoder feedback value) and
the load position (external scale feedback
value) is the same sign when you move the
load.
Check that the numerator and denominator
of the external scale division (Pr3.24 and
3.25) and reversal of external scale direction
(Pr3.26) are correctly set.
• Do not give an excessive speed command.
• Check the command pulse input frequency
and division/multiplication ratio.
• Make a gain adjustment when an overshoot
has occurred due to a poor gain adjustment.
• Make a wiring connection of the encoder as
per the wiring diagram.
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