Qri (Suited For Continuous Operation); Ionization (Suited For Continuous Operation) - Siemens LMV50 Series Manual

Connection diagram
Β
34/327
Building Technologies
4.1.1.3

QRI (suited for continuous operation)

Supply voltage operation / test at terminal
POWER QRI (X10–02 pin 2)
Required signal voltage at terminal FSV /
QRI (X10–02 pin 6)
Permissible signal voltage during
extraneous light test
Possible signal voltage terminal flame
signal amplifier / QRI (X10-02 pin 6)
Figure 25: Connection diagram QRI
For detailed information, refer to Data Sheet N7719.
4.1.1.4

Ionization (suited for continuous operation)

No-load voltage at terminal ION (X10–03
pin 1)
Caution!
The ionization probe must be installed such that protection against electrical
shock is ensured!
Short-circuit current
Required detector current
Possible detector current
Permissible detector current during
extraneous light test
Permissible length of detector cable
(laid separately)
Note!
The greater the detector cable capacitance (cable length), the lower the voltage at the
ionization probe and, therefore, the lower the detector current. In the case of extensive
cable lengths and high-resistance flames, it may be necessary to use low-capacitance
cables (e.g. ignition cable).
The electronic circuit is designed such that impacts of the ignition spark on the
ionization current are largely eliminated. Nevertheless, it must be ensured that the
minimum detector current required will already be reached during the ignition phase.
If that is not the case, the connections of the ignition transformer on the primary side
must be changed and/or the location of the electrodes also.
Basic Documentation LMV5...
4 Burner control
Approx. DC 14 / 21 V
Min. DC 3.5 V
Display flame approx. 50%
(with factory setting of the parameter
StandardFactor)
Max. DC 0,3 V
Max. DC 5,5 V
Display flame approx. 100%
(with factory setting of the parameter
StandardFactor)
1.8 m Max. 100 m
sw
br
+
0...10 V
Ri > 10 M
Approx. U
Mains
Max. AC 0.5 mA
Min. DC 6 µA, display flame approx. 50%
(at factory setting of StandardFactor)
parameter)
Max. DC 85 µA, display flame approx.
100%
(at factory setting of StandardFactor
parameter)
Max. DC 0,3 µA
100 m (wire-earth 100 pF/m)
LMV...
X10-02 / 6 Signal
X10-02 / 4 N
X10-02 / 2 Power supply a nd test
)
CC1P7550en
22.05.2018