Actuators X53 / X54; Function Principle; Definition Of Angles - Siemens LMV27.100x2 Basic Documentation

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Actuators X53 / X54

One or 2 actuators can be connected to the LMV27, 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!
Fuel actuator
Figure 66: Fuel actuator (X54)
The actuators are suited for direct connection to the LMV27.
Air actuator
Figure 67: 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.
Basic Documentation LMV27...
11 Actuators X53 / X54
LMV...
1
2
3
4
5
6
Bild 419e/0913
LMV...
1 UAC_SA
GND
2
3 ACT1_OUT_A
ACT1_OUT_B
4
ACT1_IN_A
5
6 ACT1_IN_B
Bild 420e/0913
UAC_SA
GND
ACT0_OUT_A
ACT0_OUT_B
ACT0_IN_A
ACT0_IN_B
CC1P7541en
17.12.2018