Reference Run - Siemens LMV36.520A1 Basic Documentation


Parameterization for
reference travel type 0 and
type 2
Parameterization for
reference travel type 1
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Infrastructure & Citiies Sector
12.3.1

Reference run

Different reference runs are made to unambiguously determine the actuators'
permissible working range. This means that, in the event of a power failure during
referencing, the actuator is prevented from travelling to a range outside the optical
feedback system or from running against a mechanical stop. Parameters 611 and 612
must be set, depending on the mechanical design and the type of actuator used.
In the case of reference travel type 1 the SQM33 actuator first travels to the starting
point.
Note!
Always select reference travel type 2 for SQN13 and SQN14.
No. Parameter
611 Type of referencing
Index 0 = Fuel
Index 1 = Air
612 Fuel 1: Type of referencing for fuel
actuator
No. Parameter
611 Type of referencing
Index 0 = Fuel
Index 1 = Air
612 Fuel 1: Type of referencing for fuel
actuator
To prevent the actuator from running against a mechanical stop during referencing, the
home position may have to be adjusted (depending on the direction of rotation and a
reference point of about 3° or 87°). In the case of stops within the usable range, the
prepurge or postpurge position must be checked also.
Refer to the figure below for details of the reference travel.
Basic documentation LMV36...
12 Actuators X53 / X54
Setting for actuator
SQM33... SQN13... SQN14...
0 2 2
0 2 2
0 2 2
Setting for actuator
SQM33... SQN13... SQN14...
1 3 3
1 3 3
1 3 3
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CC1P7544en
25.09.2013