Rockwell Automation 1395 Digital Reference Adapter for RTP Applications - Manual (Page 39)

Publication 1395-RTP-5.2 - September 1997
Troubleshooting 6-3
• DR-83-Dancer Parameters – Soft Fault
The dancer parameters corresponding to dancer center,
dancer mid (midpoint between center and full), and dancer
full (Parameters 560, 559, and 558 respectively) must be
given values in the proper numeric sequence. Dancer full,
Parameter 558, must be greater than Dancer mid, Parameter
559. Dancer mid must be greater than dancer center,
Parameter 560. If this fault occurs, clear fault, power down
and check values; then reapply power. If the fault is not
solved, “INITIALIZE” EEPROM; re-download links and
parameters, “SAVE” to EEPROM; and “CLEAR FAULTS”.
If the fault is not solved, replace the RTP Adapter board.
Adapter Troubleshooting Each processor or Adapter provides its own set of sophisticated
diagnostics which the user can examine to help determine the cause of
problems as they occur. Maintenance is performed at the board level.
Examining the diagnostic/fault messages available determines
whether a board should be replaced. The malfunctioning board may
be returned to Allen-Bradley for further disposition.
The board mounted LEDs can be of assistance in easily confining a
problem to a specific area. The ±12V DC, LEDs mounted near the top
of the board indicate the status of the Drive main +/-12V DC power
supply. Test points are also mounted in close proximity to analog
common so that actual voltage can be measured.
The +5V DC supply is combined with the processor OK logic, both
indicated as being OK, the next LED down from the top. Again, if the
+5 volt supply is suspect, it can be measured with respect to digital
common with test points mounted close to the top of the board.
If any of the power supply voltages are out of tolerance, further
troubleshooting is required such as interconnection wiring checks as
well as actual power supply voltage measurements at the power
supply.
The +24V DC power supply has its input power LED mounted close
to the input fuse. Mounted at the bottom of the board are 15 LEDs to
indicate the Digital I/O. The 10 input LEDs (#1 through #10) are
mounted left to right, followed by 5 output LEDs (#1 through #5)
mounted left to right.