Siemens EH.85M.21E Manual de usuario descargar pdf (Pagina 8)

ST800 Guidance Notes

Page 8 667/HB/27000/100 Issue 1

After the level 3 button is pressed, self test switches on the lamp supply.

Towards the end of this second sequence of tests, it tests all the triacs by switching

each one on in turn for a very short period of time.

If standard HI 12V halogen lamps are used (with a transformers in the signal heads),

then this pulse will not be seen on the street and so the signals need not be

covered. However it may be possible to see the pulse on lamps that are not driven

by any transformer, i.e. that run directly off the 240V.

If in doubt, all non-HI signal heads, i.e. 240V lamps,

should be covered before proceeding any further with the

self test.

Self test switches on the lamp supply and then...

checks that the voltage monitors still show no mains (triacs still switched off)

V/Mons Off...Failed

R-00000000+00000400

A-00000000+00000000

G-00000400+00000000

If any of the voltage monitors appear to be detecting mains, then it would

imply that those triacs are not holding off the mains and those lamp switch

cards should be replaced.

Checks that it can detect a lamp supply

L/S Monitor Reversed

The wires from the lamp supply monitor transformer in the power distribution

unit to the first lamp switch card (LSupp) are connected the wrong way round.

ZXO Wires Reversed

The ZXO wires from the power distribution unit to the first lamp switch card

are connected the wrong way round.

L/S Monitor Fault

The lamp supply can be detected on the voltage monitors, but no signal is

present from the lamp supply monitoring transformer. Check the transformer

and its connections.

L/Supply Failure

No lamp supply has be detected by the lamp supply monitoring transformer

but further investigations by the self test facility cannot determine the cause.

Check the lamp supply circuits relays, fuses, etc., in and around the power

distribution unit.

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Siemens EH.85M.21E Manual de usuario Pagina 8