Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 345)

Control Block Diagrams B-7
Choosing a Direction
The 1336 IMPACT drive lets you change whether the motor is
rotating in a forward or reverse motion. The direction depends on
whether or not bit 11 of Logic Options (parameter 17) is set for
unipolar or bipolar:
Regardless of how you change the direction, you can specify how fast
the drive can go in either direction (forward or reverse). To do this,
you need to set the maximum values in Fwd Speed Limit
(parameter 41) and Rev Speed Limit (parameter 40).
You can also specify the minimum speed at which you want the drive
to run. To do this, enter the minimum speed in Min Speed Limit
(parameter 215). When you set the minimum speed, you can still go
from a positive reference to a negative reference. When you press the
stop button, the speed will go down to zero.
Using the Speed Ramps
The 1336 IMPACT drive lets you set the acceleration and deceleration
ramps by specifying how long you want the drive to go from 0 rpm to
the base speed and from the base speed back to 0 rpm.
For motors, forward and reverse are arbitrary directions. For this
section, forward is considered counterclockwise from the shaft end of
the motor.
file: Control
group: Drive Logic Select
If bit 11
is set for:
Then the drive receives
references that are:
To change the direction
you need to:
Unipolar All positive
Set the forward/reverse bit in the L Option
card or command word. This bit is displayed
in bits 4 (forward) and 5 (reverse) of Logic
Input Sts.
Bipolar Positive and negative
Change the reference sign.
For this type
of reference: Use the following to
change the reference sign:
Analog ± voltages
Digital ± numbers
file: Control
group: Control Limits
Speed
Time
Constant Speed
Accel
Time
Decel
Time
acceleration deceleration
0
0
Forward Direction