AUMA LE 100.1, Operation Instructions Manual, Page: 13 / 28

5. Commissioning
5.1. Stroke
The stroke of linear thrust units is limited by end stops.
Approaching the end stops in motor operation!
Risk of damage at linear thrust unit.
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DO NOT use end stops as stroke limitation in motor operation.
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Prior to performing motor operation: Limit stroke via limit switching in multi-turn
actuator (setting).
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Observe overrun when performing the setting.
Stroke setting The stroke per turn depends on the thread pitch of the stem (refer to name plate).
The setting of end positions OPEN and CLOSED within the possible stroke of the
linear thrust unit is done via the mounted multi-turn actuator. Refer to <Limit switching:
set> chapter in operation instructions of suitable AUMA multi-turn actuators.
5.2. Thrust limitation
Thrust limitation is made via mounted actuator.
Refer to <Limit switching: set> chapter in operation instructions of suitable AUMA
multi-turn actuators.
Valve damage due to excessive tripping torque limit setting!
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The tripping torque must suit the valve.
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Only change the setting with the consent of the valve manufacturer.
Calculation of thrust limitation (tripping torque)
The maximum required or permissible thrust [F in kN) for a glove valve must be
converted to torque [T in Nm] when setting the actuator torque switching:
Formula: T = F x f
LE 200.1 LE 100.1 LE 70.1 LE 50.1 LE 25.1 LE 12.1 Type
4.6 3.9 3.9 3.2 2.6 2.6 Factor f
The thrust limitation is then performed indirectly using the calculated value through
the setting of the torque switching at the mounted multi-turn actuator.
Example:
Max. permissible thrust of globe valve: F = 30 kN
Linear thrust unit type LE 50.1 (factor f = 3.2)
T = 30 kN x 3.2 m/k = 96 Nm
Multi-turn actuator type SA 10.2; torque range 40 – 120 Nm
5.3. Test run
Moving parts!
Danger of jamming.
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Keep hands clear from stroke range of combination.
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If necessary, fit protective cover.
13
LE 12.1 – LE 200.1
Commissioning