Timing diagrams – Pilz PSS SB FT, Basic license User Manual

Page 135

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Modular Block System: Burner Management

6-91

° Ignition transformer switched off

→

IGNI = 0

° Safety valve open

→

VAV1 = 1

° Close pilot valve

→

VAV2 = 0

° Pilot flame not established

→

RUN = 0

° Do not monitor pilot flame

→

FLAI = 0

Timing diagrams

Automatic ignition cycle when no parameters are set for manual ignition

The

NEXT input in the byte format controls the cycle of the ignition

process similar to that of a sequence.
The cycle will be started with a single, continuous “1” from bit 0 to bit 5.

No manual ignition set via parameters:

MANU = 0.

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