Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 154)

| BLD-E1 Series
Revision May 2009, 00DE, V0.50 5-7
5.10 Motor Speed cannot be Changed
Motor c an run but
cannot change s peed
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Check if the setting of the
max. s peed is too low
Check to see i f speed is
out of range (upper/lower)
boundaries
Modify the setting
Modify the setting
Yes
Pres s UP/DOW N key
to see if speed has
any change
If there i s any change
of the s ignal that sets
frequency (0-10V and
4-20mA)
Check if the wiri ng between
MI1~MI6 to DCM i s c orrect
Correc t
wiring
Check if speed for
each s tep is different
Check if the wiri ng of
external terminal is c orrect
Change speed setting
Check if accel ./decel.
time is s et correctly
Please set s ui table
accel./decel. time by
load inerti a
Maybe brushless DC motor drive has malfunction or
misoperation due to noise. P lease c ontact DELTA.
Change defec tiv e
potentiometer