Siemens LME71 Series Basic Documentation page 37

Connection diagram
Measuring circuit for detector
current measurement
Smart Infrastructure
1
2
Ionization probe
M
LME7...
X10-05/2
C
X10-05/1
Figure 4: Measuring circuit for ionization probe
Legend
C Electrolytic condenser 100...470 µF; DC 10...25 V
ION Ionization probe
Microammeter Ri max. 5,000 
M
Warning!
Simultaneous operation of QRA and ionization probe is not permitted!
If not observed, there is a risk of impairment of safety functions.
Basic Documentation LME7...
4 Technical data
LME...
LME7 connection assignment:
Terminal X10-05 pin 2 flame signal
ionization input
ION
7105z23/1218
ION
37/116
CC1P7105enr
24.07.2020