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Notes on example 3a / 3b
Building Technologies
HVAC Products
CAN bus cable with LMV52... and more than 4 actuators and O2 module PLL52...
On LMV52... applications with more than 4 actuators (SQM45...), a second transformer
is required for powering the extra actuators.
In that case, transformer 1 powers the LMV52... basic unit, the AZL5..., and the first 4
actuators.
Interrupt the connection between the components at a suitable location. On the ac-
tuator side, the 2 voltages AC1 and AC2 must not be connected but only lines
«CANH, CANL and M» (+shield) to the O2 module and the other actuator.
In that case, the actuators (SA5, SA6) and the O2 module must be powered by a sec-
ond transformer to be located near the actuators and the O2 module.
Connect the power supply line from that transformer to the O2 module PLL52... (in ex-
ample 3a «SA6» / in example 3b «Auxiliary terminal) (lines AC1, AC2, M) and from
there, via bus cable AGG5.640 (cable type 1), through to the second actuator (SA) and
the O2 module.
The fuses required for transformer 1 are accommodated in the LMV52... basic unit.
Optionally, the supply voltage can also be delivered via a conduit box and fed into the
connecting line between SA4 and PLL52...
Jumper
SA 4
SQM48...
PLL52...
Bus
Bus
termination
termination
3
5
Max. cable length
Only
of power supply
CANH
to actuators 10 m
CANL
GND
F T4
F T4
Power trafo 2
AGG5.2...
230 V
12 V
not covered
F T2
L
N
For transformer 2, the OEM must fit the 3 fuses close to the transformer.
Installation Guide LMV5...
41/45
CC1J7550.1en
16.10.2006
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