SAUTER AVF124: Actuator with spring return

AVF 124: Actuator with spring return

Improving energy efficiency

Electric cut-off to save energy

Features

• Activation of through and 3-way valves of the VUN/BUN, VUD/BUD and VUE/BUE series, DN 15 to

DN 50. For controllers with a switching output (3-point control)

• Spring return facility moves the unit to the end position in the event of a power failure or when a

limit controller is activated

• Stepping motor with electronic control unit and electronic, force-dependent cut-off

•Maintenance-free gear unit

• LED display/indicators

• Coding switch for changing the running time

• Electrical connections (max. 1.5 mm²) with screw terminals

• Cable inlet M20 × 1.5

• Fitting vertically upright to horizontal, not suspended

Technical data

Power supply

Power supply 230 V~, ±15%, 50...60 Hz

Power consumption 4 W, 7.6 VA

Parameters

Running time of motor 60/120 s

Running time of spring 18 s ±10

Actuating power 500 N

Actuator stroke 0...8 mm

Response time 200 ms

Ambient conditions

Admissible ambient temperature 5...60 °C

Temperature of medium Max. 100 °C

Admissible ambient humidity < 95% rh, no condensation

Construction

Weight 2.4 kg

Housing Lower section black, cover transpar

ent

Housing material Fire-retardant plastic

Materials for gearbox

and fitting bracket

Pressure-cast zinc

Standards and directives

Type of protection1) IP 54 (EN 60529)

Protection class II (IEC 60730)

EMC directive 2004/108/EC EN 61000-6-1. EN 61000-6-2

EN 61000-6-3. EN 61000-6-4

Low-voltage directive 2006/95/EC EN 60730-1. EN 60730-2-14

Over-voltage categories III

Degree of contamination 3

Software A (EN 60730)

Mode of operation Type 1 AA (200ms, EN 60730)

Overview of types

Type Reset function

AVF124F130 Actuator spindle retracted

AVF124F230 Actuator spindle extended

Accessories

Type

0370881001

0370882001

0370882006

0370883001

0370883006

0372249001

Description

Auxiliary change-over contacts, single

Auxiliary change-over contacts, single, combined with pot. 2000 Ω, 1 W; 24 V

Auxiliary change-over contacts, single, combined with pot. 1000 Ω auxiliary change-over con

tacts, 1 W; 24 V

Potentiometer, 2000 Ω, 1 W; 24 V

Potentiometer, 1000 Ω, 1 W; 24 V

Adaptor required when media temperature > 100 °C (recommended for temperatures < 10 °C)

0372460001

Cable screw fitting (plastic M20 × 1.5) incl. locking nut and seal

A Auxiliary change-over contacts: Infinitely variable, admissible load 2(1) A, 12...250 V~, min. load 250 mA, 12

V~

Description of operation

When the device is restarted, or when it is started after the reset is triggered, there is a waiting time of

45 s until the reset function is available.

When voltage is applied to terminals 1-2a or 1-2b, the control unit to be activated is moved to any

desired position by means of the coupling rod. The coupling rod moves out or the valve opens when

voltage is applied to terminals 1 and 2a, and it moves in when the electrical circuit is closed via termi

nals 1 and 2b. In the end positions (limit stop in valve or maximum stroke reached) or in the case of

an overload, the electronic motor cut-off is activated (no limit switches).

Direction of the stroke changed by transposing the connections.

If the supply voltage fails or is switched off, or if a monitoring contact at terminal 21 is activated, the

holding magnet releases the gear unit and the preloaded spring moves the actuator to an end posi

tion, depending on the model of the actuator. The reset function is braked depending on the speed,

so that no pressure surges can occur in the supply line.

The green LED indicator lights up as long as there is a command pulse on terminal 2a or 2b. When

the limit stops are reached, the LED flashes at intervals of approx. 2.5 s.

During normal operation, the yellow LED indicator lights up continuously and goes out after the reset

function has been triggered (no power at terminal 21). When there is power at terminal 21 again, the

yellow LED flashes again for approx. 40 s. During this time, the reset function cannot be deactivated

again, so that the actuator can definitely reach the end position.

Intended use

This product is only suitable for the purpose intended by the manufacturer, as described in the “De

scription of operation” section.

All related product documents must also be adhered to. Changing or converting the product is not ad

missible.