Motor Speed Cannot Be Changed - Delta Electronics Network Device VFD-S User Manual

7.10 Motor Speed cannot be Changed

Modify the setting
If the setting of
Pr.5-09 to Pr.5-16
is too high
Yes
If finished with
Yes
executing
Pr.5-07
If the setting of
Yes
Pr.5-00 to Pr.5-06
are the same
Revision August 2008, SE09, SW V2.61
Motor can run but
cannot change speed
Check if the setting of the
Yes
max. frequency is too low
Yes
Check to see if frequency is
out of range (upper/lower)
boundaries
No
Is it in PLC mode
Yes
No
No
Check if the wiring between
M0~M5 to DCM is correct
Check if frequency for
each step is different
No
Check if accel./decel.
time is set correctly
Please set suitable
accel./decel. time by
load inertia
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
Chapter 7 Troubleshooting |VFD-S Series
No
Yes
No
No
No
Yes
Correct
wiring
No
Yes
Change frequency setting
Yes
Modify the setting
Press UP/DOWN key
to see if speed has
any change
If there is any change
of the signal that sets
frequency (0-10V and
4-20mA)
No
Check if the wiring of
No
external terminal is correct
Yes
Change defective
potentiometer
Yes
Yes
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