Rockwell Automation FlexPak 3000 DC Drive Version 4.3 - Manual (Page 59)

Drive Setup and Adjustment 3-11
Step 4. After power-up, select ARMATURE VOLT for FEEDBACK SELECT by taking
the following path from the main menu to access this parameter:
Speed/Voltage Loop (SPD)
 Speed/Voltage Loop (SPD) Feedback
Refer to the FlexPak 3000 Software Reference manual for more information
on changing parameter values.
Step 5. Initiate a JOG command to verify that the motor is rotating in the desired
direction for the Forward command.
Step 6. If the direction of rotation is incorrect, stop the drive and then disconnect and
lockout or tag power to the drive.
Step 7. To change the direction of motor rotation, reverse the connection of the motor
armature leads A1 and A2.
Important: Wrong rotation direction can be caused by incorrect wiring of the field (F1
and F2).
3.7 Determine the DC Tachometer Lead Polarity
Step 1. Turn power to the drive ON.
Step 2. After power-up, select ARMATURE VOLT for FEEDBACK SELECT by using
the following an OIM path from the main menu to access this parameter:
Speed/Voltage Loop (SPD)

Speed/Voltage Loop (SPD) Feedback
Refer to the FlexPak 3000 Software Reference manual for more information
on changing parameter values.
Step 3. Select the forward direction (as indicated above the Forward/Reverse key on
the OIM).
Step 4. Initiate a JOG command.
Step 5. Use a voltmeter on the tachometer leads to determine the lead polarity for
the forward direction of rotation. Label the tachometer leads accordingly (+
and -).
Step 6. Verify that the (+) tachometer lead is connected to terminal 21 or 22, and that
the (-) tachometer lead is connected to terminal 23. If the (+) tachometer lead
is not connected to terminal 21 or 22, stop the drive. Disconnect and lockout
or tag power to the drive. Reverse the connection of the tachometer leads.
3.8 Make Tachometer and Armature Feedback Zero
Adjustments
This section describes zero adjustments that compensate for signal drift when
tachometer or armature feedback is used. See the OIM instruction manual for
instructions on changing these parameter values.