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Building Technologies
Basic Documentation LMV5...
CC1P7550en
18 VSD module
22.05.2018
18 VSD module
Only LMV50 / LMV51.3 / LMV52
The VSD module is an internal extension to the LMV5 (PBC) and is used for the control
of VSD that ensure safety-related supervision of the fan speed.
2 fuel meters (oil and gas) can be connected as an option.
M
Counter
Counter
Oil
Release
Speed setpoint 0/4...20 mA
VSD
S
e
n
so
r
Sensor disk
Actuator oil
Actuator air
7550b12e/0816
Speed of actual value
Figure 111: Connection of VSD module
The auxiliary actuator can be parameterized on the LMV5, depending on the type of
fuel. The function offers 2 choices:
Air damper
or
VSD
.
The
Damper act
configuration corresponds to the previous function of the LMV51.0 and
LMV51.1.
Parameter
Aux Actuator (deactivated / activeDamper / active VSD /
AuxActuator3 / VSD + AuxActuator3)
On the LMV52, the VSD option can be selected in addition to the actuators.
Here, it is also selected whether the VSD shall be used in connection with O2 trim
control.
Parameter
VSD (deactivated / activated / air influen)
General
Basic diagram
LMV50/LMV51.3
Configuration of the
LMV5 (BU)
LMV52
configuration of the
LMV5 (BU)