Determination Of The Maximum Cable Length Agg5.6 - Siemens LMV50 Series Manual

Example 3c
Max. bus cable length
LMV5...-AZL51...: 60 m
AGG5.631
Power line
max. 3 m
AC2 12 V
AC1 12 V
12 V
12 V
0 V
0 V
F1 T6.3
0 V
230 V
12 V
Power
transformer 1
AGG5.2xx
Building Technologies
Installation of all components in the burner; CAN bus cable LMV52 ♠ last
actuator <20 m with 4 actuators and PLL52
AZL5...
Sub-D
connector
RAST3,5
transformer
X52
F3 T4
F2 T4
LMV52... basic unit
X3-04
Figure 99: Installation of all components in the burner; CAN bus cable LMV52 ♠ last actuator <20 m
with 4 actuators and PLL52

13.1.2 Determination of the maximum cable length AGG5.6

The maximum cable length between transformer and CAN bus users depends on the
type of cable (cross-sectional area), the number of actuators, and the type of actuator
(current).
The following graphs can be used to determine the maximum CAN bus cable lengths
between the transformer and the group of actuators or the AZL5, depending on the
relevant influencing factors.
The assumption was made that the actuators within the group are close to one another.
The minimum cross-sectional area for the system examples shown results from the
start of the curve.
The maximum cable lengths for the defined system cables AGG5.641 and AGG5.631
result from the points of intersection in the graph.
Basic Documentation LMV5...
13 Mounting , electrical installation and service
SA 1 SA 2
SQM45... SQM9...
Max. bus cable length
LMV5x...-SQM4x...: 20 m
AGG5.641
SA 3 SA 4
PLL52... SQM4... SQM4...
F T4
Only
CANH
CANL
GND
230 V
F T2
L
Max. cable length
from power supply
of actuators 20 m
F T4
Power
transformer 2
12 V
AGG5.2xx
Not used
N
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CC1P7550en
22.05.2018