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Building Technologies Installation Guide LMV5... CC1J7550.1en
HVAC Products 16.10.2006
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…
Only
CANH
CANL
GND
SA 4
3 5
F T4
AC
1 12 V
SQM48...
230 V 12 V
F T2
N
F T4
AC
2 12 V
not covered
M
L
Power trafo 2
AGG5.2...
Bus
termination
Jumper
PLL52...
Bus
termination
755
0a21e
/1
006
Max. cable length
of power supply
to actuators 10 m
For transformer 2, the OEM must fit the 3 fuses close to the transformer.
Notes on example 3a / 3b