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Building Technologies Division CC1N7550en
Industry Sector 24.05.2011
Technical data (cont’d)
Note:
All measured voltages refer to connection terminal N (X10–02, terminal 4).
Supply voltage operation / test at termi-
nal POWER QRI... (X10–02, terminal 2)
Approx. DC 14 / 21 V
Minimum signal voltage required at ter-
minal FSV / QRI... (X10–02, terminal 6)
Min. DC 3,5 V
Display flame approx. 50 %
br
0...10 V
Ri 10 M>
X10-02 / 6 Signal
X10-02 / 4 N
X10-02 / 2 Power supply
and test
LMV...
+
sw
For detailed information, refer to Data Sheet N7719.
No-load voltage at terminal ION (X10–
03, terminal 1)
Approx. UMains
Caution!
The ionization probe must be installed such that protection against electrical
shock hazard is ensured!
Short-circuit current Max. AC 0,5 mA
Required detector current Min. DC 6 µA
Display flame approx. 50 %
Possible detector current Max. DC 85 µA
Display flame approx. 100 %
Permissible length of detector cable
(lay separately)
100 m
(wire-earth 100 pF/m)
&
Note!
The greater the detector cable capacitance (cable length), the lower the voltage at the
ionizations probe and, therefore, the lower the detector current. In the case of exten-
sive 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 will be largely eliminated. Never-
theless, 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 elec-
trodes also.
Flame supervision
QRI (suited for
continuous operation)
Connection diagram
IONIZATION (suited for
continuous operation)
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