Vsd Module; Inputs / Outputs - Siemens LMV50 Series Manual

General
Connection diagram
Release contact
X73 pin 1 / X73 pin 2
Alarm input
X73 pin 3
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18.1 VSD module

A VSD can be connected to the VSD module integrated in the LMV5.
The VSD is controlled via an analog current output and a potential-free release contact.
Evaluation of the alarm feedback signal from the VSD is accomplished with a 0...24 V
output. When activated, the LMV5 enters the safety phase.
Both motor speed and direction of rotation are acquired by an inductive sensor. The
asymmetric speed signal is checked for direction of rotation and plausibility.
The VSD module generates acceleration and deceleration ramps in accordance with the
parameters settings made on the LMV5.
The motor speed is adjusted based on the same principle as that used with actuator
adjustments. For this reason, the characteristic of the VSD must be linear. Filters, delay
and damping members must be removed.
The VSD module controls the motor speed to the setpoint.
If control range limitation becomes active, an appropriate display appears on the AZL5.
If that is the case over a longer period of time (↑ Safety time ratio control), the LMV5 is
shut down and the message Special position not reached or Speed not reached
appears.
Speed control is active for speeds "8%.

18.1.1 Inputs / outputs

1 1
X70
7550a11e/0704
MOTOR SPEED INPUT FUEL COUNTER INPUT
Figure 112: Inputs/outputs VSD module
The VSD module has a potential-free release contact for the VSD. This contact is
activated when a motor speed other than zero is required.
The behavior of the release contact in the home run phase and a no-load position of
0% can be defined via the following parameter. ReleasecontctVSD = open allows the
use of a DC break, for instance.
' AC / DC 24 V (protective extra low-voltage)
Voltage:
Current: 5 mA to 2 A
Parameter ReleasecontctVSD (closed / open)
The alarm input of the VSD module is connected to the alarm output of the VSD. In the
event of an alarm, safety shutdown is triggered as a minimum requirement.
Voltage active: DC 12...24 V
Voltage inactive: < DC 4 V
Basic Documentation LMV5...
18 VSD module
1
X71 X72
GAS OIL
(alarm ON)
(alarm OFF)
1
X73
FREQUENCY CONVERTER
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CC1P7550en
22.05.2018