Actuator sensors

Inductive sensors for valves

Inductive sensors for valves

For all actuators according toVDI / VDE 3845.

Dimensions[mm] Sensingrange[mm] Material Electricaldesign Outputfunction U
b f[Hz] Connection Orderno. [V]

Valve position visible via target pucks / switching cams.

Double sensors for quarter-turn valves, 4-wire DC PNP

Operating principle

40 x 26 x 264 nfplastic4-wire2 x no10...36 DC1300M12 connector IN5225

AS-i dual sensor for quick and safe installation due to “plug & play”.

40 x 26 x 26 4 nf plastic 4-wire 2 x no 10...36 DC 1300 cable, 2 m IN5251 40 x 26 x 264 nfplastic4-wire2 x no10...36 DC1300M18 connector IN5285

Introduction

40 x 26 x 47 4 nf plastic 4-wire 2 x no 10...36 DC 1300 M12 V2A conn. IN5327

In industrial processes where liquids, air or gases are used valves are neededfor dosing and control. There is a wide variety of valve types; butterfly or ball valves being the most common quarter-turn types.These valves are seldom operated manually. Pneumatic valve actuators arenormally used for mechanical positioning. The valve position must be moni- tored electronically.Mechanical switches are still often used for position feedback on the actua-tor shaft. For other solutions several proximity switches are used together with a switch target for position detection. Disadvantage: Mounting is mechanically complex. During switch mounting the signal wires can be reversed when they are connected in the top-mounted junction box. Where there are temperature fluctuations condensing humidity leads to corrosion and thus malfunction.

Also available as complete set incl. all the accessories for a valve.

Double sensors for quarter-turn valves, 4-wire DC PNP/NPN 40 x 26 x 264 nfplastic4-wire2 x no10...36 DC1300M12 connector IN5224

High machine uptime: long-lasting and maintenance-free products.

Double sensors for quarter-turn valves, 4-wire AC/DC 40 x 26 x 404 nfplastic4-wire2 x no20...250 AC/DC25 / 50M18 connector IN0108 40 x 26 x 40 4 nf plastic 4-wire 2 x no 20...250 AC/DC 26 / 50 cable, 2 m IN0110 Double sensors for quarter-turn valves, 4-wire DC PNP with integrated solenoid valve connection 55 x 78 x 354 nfplastic4-wire2 x no1 x SV10...36 DC1300Rd 24 x 1/8M12 connector IN5334 Accessories for double sensors Target puck Ø 53 mm E10320 Target puck Ø 65 mm E10327

Special design AS-i (T5)

Target puck Ø 102 mm E10328

An extended design is the series T5. In addition to the inductive dual sensor,the unit provides an integrated connection for the solenoid valve. The con- nection to the control unit is made via a two-wire AS-i cable. The asset: Up to 30 other units can be connected to this line and separately controlled via the AS-i master.

Target puck Ø 53 mm, adjustable between 0° and 360° E10661

An innovative design eliminates the disadvantages of these conventionalsolutions. In 1992 ifm electronic developed a standard which is now used by many leading actuator manufacturers. A round switch target, known as a “puck”, with two metal screws offset by 90° is mounted on the actuator shaft. The screws are located at a different height. A compact dual proximity switch (type IND) with two integral sensors detects the upper or lower metal screw depending on the valve position and thus the two switch positions.Due to the simple construction the system operates safely with no wear atall. It is virtually resistant to external influence and meets the protection rating IP 67. Under certain conditions the unit can even be self-cleaning. The sensors are also resistant to mechanical stress such as vibration and shock.

Feedback:Monitoring ofpneumatic andmanual valvesmust be possible.

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