Siemens LMV51 Series Basic Documentation page 278

Terminal Connection
marking symbol
PIN 6
PIN 5
X81
PIN 4
PIN 3
PIN 2
PIN 1
PIN 5 GND
PIN 4 CANL
X84
PIN 3 CANH
PIN 2 12VAC2
PIN 1 12VAC1
PIN 5 GND
PIN 4 CANL
X85
PIN 3 CANH
PIN 2 12VAC2
PIN 1 12VAC1
Combustion air / flue gas temperature sensor
PIN 3
X86
PIN 2
PIN 1
PIN 3
X87
PIN 2
PIN 1
PIN 1 PE
X89-02
PIN 2 Q5 N
PIN 3 Q4 L
PIN 4 PE
X89-01
PIN 5 N
PIN 6 L
278/301
Siemens Building Technologies
HVAC Products
Description of connection
x Temperature compensation QGO... (U3)
x Power supply temperature compensation (G2)
x x GND (M)
x Thermocouple (B2)
x x GND (M)
x Nernst voltage (B1)
x Signal reference
x Communication signal
x Communication signal
x AC supply for O
x AC supply for O
x Signal reference
x Communication signal
x Communication signal
x AC supply for O
x AC supply for O
x Shield connection
x Signal reference
Flue gas temperature sensor input Pt1000 /
x LG-Ni 1000
x Shield connection
x Signal reference
Combustion air temperature input Pt1000 /
x LG-Ni 1000
x Protective earth (PE)
x QGO... heating N (Q5)
x QGO... heating L (Q4)
x Protective earth (PE)
x Power supply neutral conductors (N)
x Power supply live conductor (L)
Basic Documentation LMV5...
19 Addendum 4: LMV52... with O2 trim control and O2 module
module
2
module
2
module
2
module
2
Electrical limit values
DC [0...2 V], Ri > 100 k Ω
DC [12...18 V], Ra = 20 Ω
DC [0...33 mV], Ri > 100 k Ω
DC [-25...1 mV], Ri > 100 k Ω
DC U <= 5 V, Rw = 120 Ω ,
Level to ISO-DIS 11898
AC12V +10%/-15%, 50...60 Hz,
Fuse max. 4 A
DC U <= 5 V, Rw = 120 Ω ,
Level to ISO-DIS 11898
AC12V +10%/-15%, 50...60 Hz,
Fuse max. 4 A
At AC 120 V +10 %/-15 %,
50...60 Hz, Imax. 2.5 A
At AC 230 V +10 %/-15 %,
50...60 Hz, Imax. 2.5 A
AC230V +10%/-15%, 50...60Hz,
Imax. 2.5 A
CC1P7550en
13.08.2004