Rockwell Automation SP120 AC Drive Demo Unit - Manual (Page 15)

Running the Demo Unit 4-3
Lab C: Set up the drive for remote operation (based on 2-
wire start stop).
Tools required: None
Step 1. Set parameter A01 [ FREQUENCY COMMAND SELECT ]
to equal 01. This changes the source of the drive’s
speed reference to an analog reference.
Step 2. Start the drive by pressing . Notice that the RUN
LED and the LED above are on.
a. Turn the speed pot located on the drive. Notice
there is no effect. Start/Stop is still from the drive.
b. Turn the remote speed pot. Notice that now you
can vary the speed. Notice also that the LED
above the drive’s speed pot is not on, indicating
that the drive’s speed pot is not the active speed
reference source.
Step 3. Press to stop the drive
Step 4. Set parameter A02 [ START COMMAND SELECT ] to 01.
This changes the source of the Start/Stop control to
the control terminal block.
Step 5. Set parameter C01 [ DIGITAL INPUT 1] to equal 00
(forward).
Step 6. Set parameter C02 [ DIGITAL INPUT 2] to equal 01
(reverse).
Step 7. Verify that switches C01 and C02 are both turned to
the left.
Step 8. Turn switch C01 to the right. Notice that the motor
rotates (cw). Then turn the remote speed pot to vary
the speed.
Notice that the RUN LED is on, but the LED s above
and the pot are not on.
Step 9. Turn switch C01 back to the left. The motor should
stop.
Step 10. Turn switch C02 to the right. Note that the motor
starts to rotate (in the opposite direction (ccw)). By
turning the remote speed pot, you can vary the
speed.
Step 11. Turn switch C02 back to the left, and the motor will
stop.