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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
3 Product description
83054802 1/2018-07 La
28-228
3.3.15 Flame sensor
If the flame signal from Phase 44 does not correspond to the value required, the
combustion manager initiates safety shutdown with restart. The number of safety
shutdowns set in parameter
LossOfFlame
in sequence lead to lockout
[ch. 6.8.12].
Depending on parameter
ReactionExtranL
, a flame signal in Standby
(Phase 12) will lead to start prevention or lockout.
A flame signal during pre-purge (Phases 30 to 36) or post-purge (Phase 76
and 78) leads to lockout after one repetition and repeated occurrence.
The
OperationalStat
shows the current flame signal as a percentage value.
QRB
POWER QRI
L
N
PE
QRI / FSV
2
3
X1
0-02
4
5
6
1
BN
BK
QRB…
The flame sensor QRB… (photo resistor) is connected to input X10-02:1/4.
The flame sensor QRB is not suitable for continuous operation.
If the combustion manager is installed in a control panel, the sensor cable must be
routed separately (max 100 m).
Flame signal
Sensor current
Display
Minimum flame signal
DC 30 μA
approx. 35 %
Maximum flame signal
DC 70 μA
approx. 100 %
Extraneous light detection
from
DC 5 μA
-
QRB
POWER QRI
L
N
PE
QRI / FSV
2
3
X1
0-02
4
5
6
1
QRI
+
BN
BU
BK
QRI
The flame sensor QRI (infrared) is connected to input X10-02:2/4/6.
The flame sensor QRI is suitable for continuous operation. The combustion man-
ager tests the flame sensor in cycles in operating position (Phase 60) by simulating
a flame failure. The voltage at output X10-02:2 is increased from 14 V to 21 V for
0.5 seconds. The signal voltage at the flame sensor therefore drops to 0 V and the
combustion manager receives the expected Off signal at input X10-02:6.
If the combustion manager is installed in a control panel, the sensor cable must be
routed separately (max 100 m).
Flame Signal
Display
Min. signal voltage: DC 3.5 V (X10-02:6)
approx. 50 %
Summary of Contents for W-FM 100
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