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Siemens Building Technologies Basic Documentation LMV5... CC1P7550en
HVAC Products 4 Burner control 13.08.2004
The parameters offer the following setting choices:
• Single-detector operation (corresponding to the LMV51..., plus error message
if 2 flame detectors are connected)
• QRI_B or ION (parallel operation of QRI... / QRB... and ION, flame signal if 1 of
the 2 channels indicates a flame)
• QRI_B and not ION (parallel operation of QRI... / QRB... and ION, flame signal
if only
the QRI... / QRB... indicates a flame)
• QRI_B (parallel operation of QRI... / QRB... and ION, flame signal if the QRI... /
QRB... indicates a flame; ION will not be evaluated)
• ION and not QRI_B (parallel operation of QRI... / QRB... and ION, flame signal
if only
ION indicates a flame)
• ION (parallel operation of QRI... / QRB... and ION, flame signal if ION indicates
a flame; the QRI... / QRB... will not be evaluated)
• QRI_B and ION (both must indicate a flame; this selection is not available with
the «Extraneous light» block)
Selective supervision of pilot ignition with ION, which means that the ION probe only
detects the pilot flame. The main flame is supervised with the QRI...
Parameter «Extraneous light» must be set to «QRI_B | ION», which means that extra-
neous light is detected if 1 of the 2 flame detectors indicates that a flame is present.
Parameter «Pilot phase» must be set to «ION», which means that in the pilot phases
(Phases 40 through 50), only ION will be evaluated.
Parameter «Operating phase» must be set to «QRI_B &/ ION», which means that in the
operating phases (Phases 52 through 62) only the QRI... may deliver a flame signal.
With this kind of parameterization, a flame signal via ION in the operating phases will
lead to loss of flame.
Note: All measured voltages refer to connection terminal N (X10–02, terminal 4).
Supply voltage operation / test at terminal POWER QRI...
(X10–02, terminal 2) approx. DC 14 / 21 V
Minimum signal voltage required at terminal FSV / QRI...
(X10–02, terminal 6) DC 3.5 V
display flame approx. 50 %
7719a01E/0502
SIEMENS
QRI
Made in Germany
Landis & Staefa
blue
brown
0...10 V
Ri
> 10 M
Ω
X10-02 / 6
X10-02 / 4
X10-02 / 2
LMV...
+
black
For detailed information, refer to Data Sheet N7719.
pplication example
Implementation
Technical data,
flame supervision
QRI (suited for
continuous operation)
Connection diagram
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