Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 34)

4-14 SA500 Diagnostics, Troubleshooting, and Start-Up Guidelines
4.7.7.5 Testing UDC Module Meter Ports
This section describes how to test the UDC module meter ports. Use the AutoMax
Programming Executive software Monitor Setup UDC/PMI screen. Check each UDC
Meter Port being used as follows:
Step 1. Map registers that you want to display to UDC meter ports 1, 2, 3, and 4. Set
the desired maximum and minimum values.
Step 2. Using the Monitor I/O screen, force a value within the range configured to
each UDC register being output on the meters.
Step 3. Use a voltmeter to verify that the signal on the terminal points (-10V to +10V)
of each meter port is proportional to the value in the corresponding register.
Step 4. Unforce the registers being output on the meter ports to zero.
4.7.8 Performing Uncoupled Motor Tests
The following tests are performed with the motor uncoupled from the load. Ensure that
the limit values entered through the parameter entry screens are correct.
Step 1. Verify that the parameter screen information (Power Module data, motor
data, speed feedback data, and meter port setup) is correct.
Step 2. Perform the resolver gain calibration procedure. This procedure is described
in the SA500 Power Modules instruction manual (S-3018). The Resolver
Gain Calibration Completed bit (register 201/1201, bit 6, RES_GAN@) will
be set to indicate the procedure is complete. Check the value in the local
tunable RES_GAN%. Large gain values (close to 255) may indicate a
problem with the resolver wiring or connections. Refer to the SA500 Drive
Configuration and Programming instruction manual (S-3044) for a list of the
resolvers that may be used with SA500 drives.
Step 3. Perform the resolver alignment procedure if you are using a brushless motor.
Refer to section 3.3. note that this procedure can be performed with the
motor coupled to the load. However, it will cause the motor to move less than
one revolution in both the forward and reverse directions. If this motion would
be harmful to your machine, uncouple the motor from the load before
performing this procedure.
Step 4. The Power Module’s AC output phase rotation must match the resolver’s
orientation. Output phase rotation (UVW or UWV) is determined by setting
the Output Rotation parameter, assuming the motor leads are correctly
connected. Resolver orientation is determined by the cosine lead
connections.
a. Place a value of zero in the External Torque Reference register (register
102/1102, TRQ_REF%). Turn on the drive.
b. Slowly increase the value in register 102/1102.
c. If the motor begins turning, verify that the motor shaft is turning in a
clockwise direction. Examine the contents of the Resolver Scan Position
register (register 215/1215, RES_SCN_POS%). The value in the register
should be increasing.