Load On Individual Contacts; Cable Lengths; Cross-Sectional Areas; Fuses Used In The Basic Unit Lmv51 - Siemens LMV51 Series Basic Documentation

Load on individual contacts

Fan motor contactor
Alarm output
Ignition transformer
Fuel valves (gas)
Fuel valves (oil)

Cable lengths

Cross-sectional areas

Fuses used in the basic
unit LMV51...
146/157
Siemens Building Technologies
HVAC Products
· Nominal voltage
· Nominal current
· Power factor
· Nominal voltage
· Nominal current
· Power factor
· Nominal voltage
· Nominal current
· Power factor
· Nominal voltage
· Nominal current
· Power factor
· Nominal voltage
· Nominal current
· Power factor
Mains cable
CFN cable
Analog cable
Flame detectors
CAN bus
When a certain cable length is exceeded, the actuators must be powered by a
transformer located near the actuators.
For details, refer to «Power supply for LMV51... system».
The cross-sectional areas of the mains supply lines (L, N, PE) and, if applicable, the
safety loop (SLT, shortage of water, etc.) must be sized for nominal currents in
agreement with the selected external primary fuse.
The cross-sectional areas of the other cables must be sized in agreement with the
internal unit fuse (max. 6.3 AT).
Min. cross-sectional area
Cable insulation must satisfy the requirements of the relevant temperature and
environmental conditions.
The CAN (bus) cables have been specified by Siemens and can be ordered as
accessory items.
Other types of cables may not be used. Otherwise, the EMC characteristics
of the LMV51... system will be unpredictable!
F1
F2
F3
1) If the cable length exceeds 50 m, no additional loads may be connected to the stauts inputs
Basic Documentation LMV51...
11 Technical data
AC 230 V +10 % / -15 %, 50-60 Hz
AC 230 V +10 % / -15 %, 50-60 Hz
AC 230 V +10 % / -15 %, 50-60 Hz
AC 230 V +10 % / -15 %, 50-60 Hz
AC 230 V +10 % / -15 %, 50-60 Hz
max. 100 m (100 pF / m)
max. 100 m (100 pF / m)
max. 100 m (100 pF / m)
refer to data sheets CC1N7714
CC1N7716
CC1N7719
total length max. 100 m
(single- or multi-core to VDE 0100)
6.3 AT IEC 60127 2 / 5
4 AT IEC 60127 2 / 5
4 AT IEC 60127 2 / 5
CC1P7550en
1 A
cosj > 0.4
1 A
cosj > 0.4
2 A
cosj > 0.2
2 A
cosj > 0.4
1 A
cosj > 0.4
1)
2
0.75 mm
29.05.2002