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Building Technologies Basic documentation LMV37.4... CC1P7546en
11 Actuators X53 / X54 17.12.2018
11 Actuators X53 / X54
One or 2 actuators can be connected to the LMV37.4, depending on the selected
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...
Bild 419e/0913
Fuel actuator
FUEL X54
1
2
3
4
5
6
UAC_SA
GND
ACT0_OUT_A
ACT0_OUT_B
ACT0_IN_A
ACT0_IN_B
Figure 77: Fuel actuator (X54)
The actuators are suited for direct connection to the LMV37.4.
LMV...
Bild 420e/0913
Air actuator
AIR X53
1
2
3
4
5
6
UAC_SA
GND
ACT1_OUT_A
ACT1_OUT_B
ACT1_IN_A
ACT1_IN_B
Figure 78: Air actuator (X53)
11.1 Function principle
The actuators are driven by stepper motors. The resolution reached when making 1
positioning step is 0.1°.
The running speed of the actuators is fixed at 5 seconds for a positioning angle of 90°
for SQM33.4, SQM33.5, and SQN1.
The speed is 10 seconds for a positioning angle of 90° for SQM33.6.
The SQM33.7 requires 17 seconds for a positioning angle of 90°. An optical incremental
transducer is used to monitor the current position. Due to the use of a gear train with
almost no backlash, position control is not required.
11.2 Definition of angles
The angles and angular ranges are specified in the Data Sheets of the relevant
actuators.
SQM33: Refer to Data Sheet N7813.
SQN1: Refer to Data Sheet N7803.
Also refer to figure Angle definitions with SQM33.
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