WCA September 2015

Technology news

Connector with built-in fast connection technology

HELUKABEL has launched its new Profinet plug connector, the Helukat RJ45 Cat5 IP20, which has built-in fast connection technology. The fieldbus-compatible plug comes in a linear and angled design. It is well-suited for industrial use in tight installation spaces. Helukat has coloured contact elements which prevent the installer from committing connection errors. The clear labelling matches the wire sequence of the Profinet standard, whose four single wires can be quickly connected. The metal housing enables it to be used in industrial applications. Transmission rates are up to 100 MHz Cat 5. The shielded plug connector comes in a linear 180° version and an angled 90° version. Designed to protection grade IP 20, it can withstand operating temperatures of -4ºF to 158ºF (-20ºC to +70ºC). The Helukat RJ45 Cat5 IP20 is compatible with AWG 22 and AWG 24 cables, and designed to be used with both bunched and solid wire conductor types. Magnetic particle clutches and brakes are suitable for tension and torque control. Clutches are used for rewind tensioning, and torque limiting. Brakes are used for unwind tensioning. Performance, accuracy and life are greater than friction clutches and brakes, since magnetic particle units have no friction plates to wear or give off dust. Slip torque is smooth and infinitely adjustable. Torque is varied from near zero to maximum by varying input current. Units from 1oz inches to 300lb-feet, with heat dissipation up to 1,900 watts continuous duty are available from stock.

The Profinet plug connector can be easily and quickly installed without the need for tools. The single wires must be arranged in accordance with the colour coding of the RJ45 plug and, in the folded-up guide element, inserted into the contact points up to the stop. To achieve a full connection, the user presses the guide element downward ❍ The new Profinet plug connector from Helukabel

to the stop, closes the housing cover, and fixes the front screw cap with a quarter rotation. The development of a 145°-angled version as well as an eight-pin variant is currently in the planning process, and will expand the product range once successfully completed. Helukabel GmbH – Germany Website : www.helukabel.de follower potentiometer or ultrasonic sensor connects directly to the power supply to make a constant tension unwind system. As the roll diameter decreases, the current energising the brake is decreased to keep tension constant. Placid’s hysteresis brake produces torque without physical contact, ensuring torque is very precise and repeatable, and providing a very long life. Applications include torque and tension control for web handling (unwinding), and load simulation for testing motors and drives. Torque can be varied from three per cent The Placid Industries

Clutches and brakes suitable for tension and torque control

❍ Tension and torque control from Placid Industries

to 100 per cent by varying input current. This also provides a very wide RPM range while the cog-buster automatically decogs (eliminates torque ripple) with one revolution. Placid Industries Inc – USA Website : www.placidindustries.com

The DC constant-current power supplies power the clutches, with output current controlled manually with a potentiometer, or by a 0-10 volt signal voltage from a computer or PLC.

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Wire & Cable ASIA – September/October 2015

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