Design and Implementation of HC900 Control System - HC900 system Start-up test
54 HC900 Process & Safety Controller Safety Manual Revision 1.9
01/14
HC900 system Start-up test
System Checks
1) Verify IO channel isolation to other channels and ground.
2) Verify all Contact inputs contain blocking diodes as shown Figure 12.
3) Verify Watchdog function operates properly.
To ensure that the watchdog test operates successfully,
• Power cycle the controller without batteries.
• If the watchdog test fails, the controller does not start and a yellow LED blinks. Refer to the POST
(power on Self Test) in the HC900 User Manual for more information.
• The controller will start and work fine in case the watchdog test passes.
START-UP
1) Review and follow “HC900 Controller Installation and User Guide” 51-52-25-107 prior to applying
power to the unit.
2) Verify controller mode switch is in the proper operating position (‘RUN’, ‘RUN/PROGRAM’,
‘PROGRAM’).
3) Ensure all INPUTS and OUTPUTS are in their proper start-up state per the application requirements.
4) Ensure all operator interfaces are properly connected and functional.
5) Ensure that all the requirements of this safety manual have been complied with.
6) Ensure all safety precautions and trained safety personnel are in place.
7) Obtain and follow all start-up procedures provided by the safety application engineers.
8) Apply power to the system per the start-up procedure.
9) Verify Controller start-up LED sequence if accessible completes the stat-up sequence
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