Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 195)

Publication 1398-5.2 – PDF 1997
Maintenance and Troubleshooting 11-13
Testing Encoder Inputs
The following test verifies both reception and transmission of the line
count from an encoder by the drive.
The tests require:
●
a PC running ULTRA Master, and
●
a motor encoder.
Testing Encoder Inputs
1. Disable the drive by opening the connections between the
ENABLE input and I/O Power (I/O PWR).
2. Choose the D rive Set Up command icon from ULTRA Master.
3. Choose Divide by 1 as the Motor Encoder Output Signal.
4. Make the following hardware connections:
• Connect the motor encoder to J2.
• Jumper the Auxiliary Encoder Inputs to the Motor Encoder
Outputs by connecting the following pins:
5. Choose the E ncoder Diagnostics command icon from
ULTRA Master.
6. Choose Z ero Count for both the Motor Encoder and Master Posi-
tion Input.
7. Slowly rotate the encoder shaft by hand while observing the
counts for both the Motor Encoder and Master Position Input. The
Motor Encoder and Master Position Input line counts should be
equal.
If you determine that the analog input is defective, refer to “Return
Procedure” on page Help-7 to return the unit.
Note: This test assumes that I/O power is 24 VDC.
J1-7 to J1-14 J1-10 to J1-17
J1-8 to J1-15 J1-11 to J1-18
J1-9 to J1-16 J1-12 to J1-19