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| BLD-E1 Series
Revision May 2009, 00DE, V0.50 5-7
5.10 Motor Speed cannot be Changed
Motor can run but
cannot change speed
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Check if the setting of the
max. speed is too low
Check to see if speed is
out of range (upper/lower)
boundaries
Modify the setting
Modify the setting
Yes
Press UP/DOWN key
to see if speed has
any change
If there is any change
of the s ignal that sets
frequency (0-10V and
4-20mA)
Check if the wiring between
MI1~MI6 to DCM is correct
Correct
wiring
Check if speed for
each step is different
Check if the wiring of
external terminal is correct
Change speed setting
Check if accel./decel.
time is set correctly
Please set suitable
accel./decel. time by
load inertia
Maybe brushless DC motor drive has malfunction or
misoperation due to noise. Please contact DELTA.
Change defective
potentiometer