
7. Maintenance and Fault Finding
GEM80-500 Series Controller
GEM80-500 Technical Manual (T2025En)
(08/04)
Page 7-16
7.11.2 Self-test
System
The self-test system operates as shown:
Execution
(a) One full cycle of start-up tests at power up.
(b) I/O tests repeated every scan.
(c) Regular on-line repetition of running tests.
Faults which immediately trip the watchdog
(a) AC supply break longer than the minimum 20 ms ride-through period.
(b) Power supply module failure.
(c) Failure of processor module.
Содержание GEM80-500 Series
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