Delta VFD11AMS21AFSHA, User Manual

Page: 254 / 445

Chapter 12 Description of Parameter Settings

MS300 (High Speed Model)
12-07-4
Ti me
B .B . S p e e d tr a cki n g : fr o m mi n i mu m o u tp u t fr e q u e n cy
In p u t B .B . si g n a l
S to p o u tp u t vo l ta g e
Di sa b l e B .B . si g n a l
Wa i ti n g ti me P r. 0 7 - 0 8
S p e e d tr a cki n g
S yn ch r o n o u s sp e e d d e te cti o n
O u tp u t fr e q u e n cy ( H)
O u tp u t vo l ta g e ( V )
O u tp u t cu r r e n t
P r. 0 7 - 0 9
Cu r r e n t l e ve l o f
sp e e d tr a cki n g
FWD Ru n
B.B.
A
B.B.
A
Time
Ov er-c urrent s tall prev ention
Output frequenc y (H)
Output v oltage (V)
Output c urrent
Pr. 06-03
Ov er-c urrent s tall
prev ention lev el
during ac c el.
FWD Run
Input B.B. s ignal
Stop output v oltage
Dis able B.B. s ignal
Waiting time Pr. 07-08
Speed trac k ing
Sy nc hronous s peed detec tion

Current Limit of Speed Tracking
Factory Setting: 100
Settings 20~200 %

The AC motor drive will execute the speed tracking only if the output current is greater than the
value set by Pr. 07-09.

The maximum current of speed tracking will affect the synchronous time. The larger the
parameter setting is, the faster the synchronization arrives. However, if parameter setting is too
large, overload protection function may be activated .