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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 10 Actuators X53 / X54 01.12.2009
10 Actuators X53 / X54
One or 2 actuators can be connected to the LMV37.4... system, depending on the se-
lected operating mode (refer to chapter
Selection of operating mode).
Caution!
When mounting the actuators, it must be made certain that the mechanical link
to the controlling elements is rigid!
LMV...
7540z14e/1109
Fuel actuator
FUEL X54
1 U_A_SA
2 GND
3 ACT0_OUTA
4 ACT_OUTB
5 ACT0_IN_A
6 ACT0_IN_B
Figure 41: Actuator fuel (X54)
The actuators are for direct connection to the LMV37.4...
1 UAC_SA
2 ACT0_OUTA
3 ACT_OUTB
4 ACT0_IN_A
5 ACT0_IN_B
6 GND
LMV...
7540z15e/1109
Air actuator
AIR X53
Figure 42: Actuator air (X53)
10.1 Function principle
The actuators are driven by stepper motors. The resolution reached when making one
positioning step is 0.1°. The running speed is fixed at 5 seconds for a positioning angle
of 90°.
An optical incremental transducer is used to monitor the actual position. Due to the use
of a gear train with almost no backlash, position control is not required.
10.2 Definition of angles
The angles and angular ranges are specified in the Data Sheets of the relevant actua-
tors.
SQM33…: Refer to Data Sheet N7813
SQN1… refer to Data Sheet N7803
Also refer to figure
Angle definitions with SQM33...
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