Watchdog NTC to F500 PGW CAI REV0 July 2014
18
CHECK LIST
For problems after initial start-up
1.
Is there excessive interference on the electrical power supply? Power
conditioners and surge (spike) suppressor may have to be fitted.
2.
Has the wiring for the Watchdog and Fieldbus been routed away from power
cables?
3.
Is the F500 Elite circuit properly grounded?
4.
Is the Micro-processor control unit overheating, if so mount in temperature-
controlled environment of maximum temperature 104°F (40°C).
5.
Check that high powered ‘Walkie Talkie’ radios are not operated immediately
near the control unit or Watchdogs as this will affect the performance.
6.
Check that the communications/power cable is connected correctly and in
accordance with DRG A,B,C and E.
7.
Check that there is no exception status reported.
8.
If only part of the diagnostics data is displayed on the terminal screen then turn
the F500 Elite off then back on again without removing power to the display
terminal.
9.
If the Watchdogs are not responding or are intermittent, check that the termination
resistors are correctly fitted.
