Minimum Burner Pause Time T Bp - Honeywell BCU 460 Technical Information

Parameters
4 .3 .3 Minimum burner pause time t
Parameter 21
Programmable time between 0 and 250 s.
04 00 01 02
t t
BP Z
An immediate restart of the burner after a controlled
shut-down is prevented by the pause time. The pause
time starts when the burner is switched off. If a start-up
signal (ϑ) is applied before expiry of this time, start-up is
delayed until the end of the pause time.
After the pause time, the burner is started if the start-
up signal (ϑ) is applied.
The minimum burner pause time t
program sequence to the requirements of the applica-
tion.
The time should be set such that the system can be
moved to ignition position, i.e. air valves or butterfly
valves can be closed and, possibly, gas can be flared off,
before a restart occurs.
BCU 460, BCU 465 · Edition 03.16l
BP
03 04 88
1
5
4
ϑ
7
9
12
V1
14
V2
16-17
18-19
t
t
FS
t
SA
serves to adapt the
BP
Example of application
L1, N, PE
DI
PLC
P A
DI
5
6 3 22
BCU 460..L
12 26
VG..N GIK..B
VR..R
P
23 4
19
18
µC
17
16
9
BIO
BIC
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