BURKERT 773140 (Type 1061) is a position feedback unit designed for pneumatic rotary actuators. It combines the functions of a position feedback indicator and a solenoid valve in a single compact box. This specific model features electromechanical feedback via micro switches and an integrated 5/2-way solenoid valve. It is perfectly suited for pneumatic rotary actuators such as Type 2051 and Type 2052. The mounting console with adjustable size enables use with actuators in different sizes, providing reliable on/off position feedback and actuator control.

General Technical Data

Property	Value
Housing Material	Aluminium
Seal Material	PUR
Base (powder-coated)	RAL9005
Cover (powder-coated)	RAL7016
Dome	Polycarbonate
Switching Precision	<1.5°
Bracket	Adjustable Hole gauge: 80/130 mm x 30 mm, Height: 20/30 mm
Degree of Protection	IP65 according to EN 60529

Model 773140 Specifications

This model is configured with electromechanical feedback and a 5/2-way solenoid valve.

Technical Data	Value
Limit Switch Manufacturer	Crouzet
Limit Switch Type	83.161.301 micro switch
Switching Capacity	4 A, 230 V AC/DC
Contacts	Silver nickel
System Connection	Cable gland M20 × 1.5 (Clamp range 8...13 mm)
Terminals	Screw-type terminals up to 2.5 mm²
Ambient Temperature	-10 °C...55 °C
Solenoid Valve Type	Type 6525 (Article no. 302828)
Ways	5/2
Operating Voltage	24 V DC
Nominal Power	0.8 W
Orifice	4 mm
Supply/Exhaust Air	G 1/4, G 1/8

Dimensions

Dimensions in mm, unless otherwise stated.

Terminal Connection Diagram

Assembling

Risk of injury

The electric components inside the box carry dangerous voltage. Moreover there is a risk of bruise by some rotating parts. Do not open the housing while operating!

1. Bring the actuator to a completely “Open” or “Close” position.

• Closed: Valve is closed, Channel position is abreast the actuators longitudinal axis.
• Open: Valve is open, Channel position towards actuator axis.

2. Equate the modules axis with the actuator.
3. The device must be grounded.
4. Attach the box with bracket on the actuator or valve and fix it.
5. Connect the control unit.

System connection with cable gland M20x1.5: Lead the system cable through the cable gland and wire the single conductors on the terminal block. Make sure that there is a sufficient mains lead cleat!

Adjusting Switch-Points

Ex factory the modules are adjusted in the following way:

• Switch-point close: Position Valve/Actuator at 2° to 6°
• Switch-point open: Position Valve/Actuator at 84° to 88°

If readjustment should be necessary proceed as following:

1. Untighten cover screws and open the housing.
2. Position „Closed“: Keep pushing down the lower switch cam (1) and turn it (2) until the micro-switch is activated.
3. Position „Open“: Keep pushing down the upper switch cam (1) and turn it (2) until the micro-switch is activated.
4. Close the housing. (Fastening torque of the screws: 1.4 Nm)

Solenoid Valve

The limit-switch-box is equipped with an integrated 5/2-way solenoid valve. It is already wired on the terminal block, which means that the supply voltage comes via the system connection.

The pneumatic connection to the solenoid valve is realized by an external connection block. The types of connection are shown in the adjacent drawing.

Maintenance

Long time outdoor usage can cause gaskets to become brittle after some time. Safe operation can only be guaranteed with leak-proof boxes. Seals should be checked and, if necessary, exchanged at least after five years. Gaskets may be replaced by qualified personnel only.