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[22] Sequence state

Function blocks

Description

Note

Only available for se@vis Land V3.00 as of Version V3.30.00.00

By linking multiple function block of this type (also referred to below as "status"), you can define automatic changes of operation mode.

Each status defines a burner status: e.g. "[M1] Oil", "[M5] Oil/Biogas", "[M8] Biogas" etc.

The linkage of multiple statuses is called a sequence.

Note

A sequence must begin with "Burner OFF".

A sequence always ends with a target operation mode (e.g. "[M8] Biogas").

If the system is in a configured status and the function block has a release, different conditions can trigger a switch to a different status (e.g. from "[M1] Oil" to [M5] Oil/Biogas):

Next

The next status in the direction of the target operation mode.

Fall Back

The status to which the system is to switch back by default if operating conditions are not met. "Fall back" removes itself from the target operation mode.

Stop

If the system objective is to shut off the main combustion, there is an option to use a "Stop" status to trigger a shut-off (e.g. when shutting off the burner using a different fuel to that used to start the burner).

Function block parameters

[P0] System status

Selection to which system status this function block is to respond.

[P1] State: Next

Selection of a sequence function block.

[P2] State: Back

Selection of a sequence function block.

[P3] Next status when burner stop

Selection of a sequence function block.

[P4] Minimum dwell time: Start

Fixed value

[P5] Minimum dwell time: Stop

Fixed value

[P6] Stopp: Behaviour

Indication how the system is to behave when stopping.

[P7] Stop: Timeout

Fixed value

Function block inputs

[I0] External release

Digital channel

[I1] Entry conditions fulfilled

Digital channel

[I2] Operation conditions fulfilled

Digital channel

[I3] Release next state

Digital channel

Function block outputs

[Q0] Request entry conditions

Digital channel

[Q1] Request operation conditions

Digital channel

Reference

FUP title

State

DOC-721645026