24
0 E-240
Timing error in
fetching encoder
position data
(1) The number of
consecutive errors in the
encoder data update
sequence is greater than
the value in P0-68 (set
the number of errors P0-
68.0 ~ P0-68.1 after
version 3770).
(2) CPU timer
fluctuates.
(1) Restart the drive;
(2) Check the arrangement of
transmission cables to ensure
that strong and weak currents
are wired separately;
(3) Separate power supply for
high current equipment;
(4) Well grounded.
1 E-241
Encoder responds to
data scrambling
The received encoder
data is wrong, and the
number of errors
exceeds the value in the
encoder error retry
number register P0-56
(after version 3770, set
the number of errors P0-
68.0 ~ P0-68.1)
(1) Check the arrangement of
transmission cables to
ensure that strong and weak
currents are wired
separately;
(2) Separate power supply for
high current equipment;
(3) Good grounding
3 E-243
Delta encoder
abnormal
The status frame fed
back by the encoder is
wrong, which is the
alarm of delta encoder
itself
(1) Check whether the encoder
cable is normal;
(2) Confirm whether the encoder
is normal
25 0 E-250 Zero return error alarm (1) P9-15 is not 0
and the total time to
return to the origin
exceeds the time set by
P9-15
(2) The parameter
setting of the original
function is wrong
(1) Increase P9-15;
(2) Ensure that the direction of
mechanical offset (P9-19, P9-20) is
opposite to the direction of
returning to the origin;
(3) Check whether there is a
problem with the origin signal;
(4) Check the parameter setting of
the new return to the original
86