Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 167)

Publication 1746-6.1.2 - July 2000
10-8 Troubleshooting
Informational Messages
Informational
Message No. Potential Cause Possible Resolution
2 Tried to exit Estop after a nonrecoverable Estop has
occurred. 1. Remove watchdog disable jumper.
2. Cycle power.
3 A set Initialize Retract Position command was
attempted from the SLC processor while the SLC Servo
Module was in Estop. The axis is not homed, or the
motion is not complete.
•
If in Estop, reset Estop.
•
If not homed, home the axis.
•
If motion is not complete, wait for the motion to
end.
4 Set Retract Position command was attempted from the
SLC processor while the SLC Servo Module is in Estop,
the axis is not homed, or the motion is not complete.
•
If in Estop, reset Estop.
•
If not homed, home the axis.
•
If motion is not complete, wait for the motion to
end.
5 Set Home command was attempted from the SLC
processor while the SLC Servo Module is in Estop, the
motion is not complete, or the axis has not seen a
marker.
•
If in Estop, reset Estop.
•
If motion is not complete, wait for the motion to
end.
•
If motion is not complete, move the axis equal to
the 4* encoder lines count to see the marker.
6 A preset operation was attempted while motion was in
progress or while the motion was being held. 1. Unhold motion and/or wait for motion complete.
2. Attempt the preset operation.
7 The Home Axis bit was released before the homing
operation was completed, thus the home operation was
aborted. 1. Wait for the At Home bit to go true.
2. Release the Home Axis command.
8 The marker was not detected when a move to one
electrical revolution (4* Encoder lines) was commanded
to detect the marker. 1. Check the marker circuit (Z and Z NOT pulses).
2. Refer to installation section for the encoder signal
timing diagrams.
9 The limit switch state changed too fast for the control
to detect. Check the limit switch.
10 The Retract Position command was cancelled by the
SLC Servo Module. Reinitiate the command.
11 The Retract Position command was performed
successfully. N/A
12 The Home command was performed successfully. N/A
13 An attempt was made to home the axis when the
control has been disabled. Enable the DAC configuration bit (W0-B0).
14 Speed move encountered a software overtravel. Clear fault and move in the opposite direction.
15 Encoder feedback is marginal. Typically this fault is due
to electrical noise coupling onto the feedback lines. 1. Check that the feedback cable is isolated from
electrical fields.
2. Check that relays, contactors, and solenoids are
adequately suppressed.
16 Absolute move was attempted in Estop. 1. Reset Estop.
2. Reinitiate the command.
17 Incremental move was attempted in Estop. 1. Reset Estop.
2. Reinitiate the command.