Chapter 6 Troubleshooting IS620P User Manual
- 112 -
During
Startup
Fault
Phenomenon
Cause Conîš¿rming Method
Input the
position
reference.
The servo
motor rotates
in the reverse
direction.
The input
reference pulse
counter (H0B-
13) is negative.
•
When H05-00 = 0 (pulse reference is the main
position reference source), check whether the
setting of H05-15 (reference pulse form) is
consistent with the actual pulse input. If not, it
indicates that H05-15 is set incorrectly or the
terminal is wired incorrectly.
•
When H05-00 = 1 (step reference is the main
position reference source), check whether H05-
05 (step size) is positive or negative.
•
When H05-00 = 2 (multi-position reference is the
main position reference source), check whether
each displacement is positive or negative.
•
Check whether the DI function FunIN.27:
PosDirSel (position reference direction) has
been allocated and , whether the logic of the
corresponding terminal is effective.
•
Check whether H02-02 (rotating direction) is set
correctly.
â– After the preceding causes are removed
,
the servo motor can rotate.
The servo
motor jitters
at low speed.
The motor
speed is not
steady.
The gain is set
unreasonably.
•
Perform automatic gain adjustment based on
section 4.5.2 Automatic Gain Adjustment.
The motor
shaft vibrates
left and right.
The load inertia
ratio (H08-15) is
too large.
•
If the servo motor can run safely, perform the
inertia auto-tuning based on section 4.5.1 Inertia
Auto-tuning.
•
Perform automatic gain adjustment based on
section 4.5.2 Automatic Gain Adjustment.
â– After the preceding causes are removed, the servo motor can run normally.
The servo
system runs
normally.
Positioning
inaccurate
The
unsatisfactory
position
deviation is
generated.
•
Conîš¿rm the input reference pulse counter (H0B-
13), the feedback pulse counter (H0B-17) and
the mechanical stop position. For the conîš¿rming
steps, see the procedure below.
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