Rockwell Automation 20D PowerFlex 700S AC Drives with Phase II Control Reference Manual - Manual (Page 147)

Rockwell Automation Publication PFLEX-RM003E-EN-E - January 2011 147
Detailed Drive Operation Chapter 1
Parameter 11 [Spd Ref1 Divide] and parameter 13 [Spd Ref2 Multi] are linkable
parameters. This allows speed reference 1 and 2 to be scaled “dynamically” with
an input signal if desired. An example would be to have an analog input linked to
the scale parameter. The speed reference and the scale would then affect the value
sent to the reference select block.
Jog Reference
Two separate jog speeds can be used as a speed reference - parameter 29 [ Jog
Speed 1] or parameter 39 [ Jog Speed 2]. For more information on jog speeds refer
to
Jog on page 65 .
Direction Control and Bipolar Reference
The direction of rotation of the motor can be controlled by a forward/reverse
command or by the use of a bipolar (+/-) signal. For more information on
direction control, refer to
Direction Control and Bipolar Reference on page 41 .
Speed Reference Limits
Parameters 30 [Min Spd Ref Lim] and 31 [Max Spd Ref Lim] are used to set the
forward and reverse speed limits for the speed reference. Parameter 30 [Min Spd
Ref Lim] sets the negative speed limit and parameter 31 [Max Spd Ref Lim] sets
the positive speed limit. These limits are set to -125% and 125% of parameter 4
[Motor NP RPM] by default. Parameter 41 [Limited Spd Ref ] contains the
actual value of the limited speed reference.
10
11
12
X
13
Speed Ref 1
Spd Ref1 Divide
Speed Ref 2
Spd Ref2 Multi
/
1
0
157 00
0
30
31
Limit
Logic Ctrl State
Limited Sped Ref
To Ramp 41
Min Spd Ref Lim
From Direction Control
Max Spd Ref Lim