DEGRADED MODE — CACHED ENTITLEMENTS · SENTRIS-DB01 UNREACHABLE · People & Places duty desk
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Opened 13 years ago

Last modified 13 years ago

#26 CANNOTREPRODUCE fault

NCL-2001 thermal derate flapping under load (Tyne Bridge gantry)

Reported by: People & Places Owned by: Node Control
Priority: P3 Milestone:
Component: Thermal / PSU Version:
Keywords: Cc:
Desk: Estate & Systems Legacy ref: DEVCON-1188

Description

NCL-2001 (ANPR gantry, Tyne Bridge southbound) intermittently asserts thermal derate and steps down emitter duty, then recovers, with no correlated ambient excursion. PSU telemetry nominal. Cannot reproduce on the bench.

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Change History (3)

comment:1 by D. Pike, 13 years ago

Could the derate flag be a bad reading coming back over DN—

comment:2 by K. Wren, 13 years ago

It's a thermistor on a wire, Pike. There is no DNS involved in a thermistor.

comment:3 by Node Control, 13 years ago

48h on the analyser, no repro, thermistor in tolerance. Closing CANNOTREPRODUCE; monitor left in place, reopen if it derates in service.

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