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Product category: Drives, motors and power transmission, couplings, clutches
News Release from: Hayes Control Systems | Subject: KL8001 range of Power Bus Terminals
Edited by the Manufacturingtalk Editorial Team on 16 April 2002

Control motors directly via fieldbus

Controlling motors of up to 4kW directly from any of the principal fieldbus systems is straightforward and inexpensive with a new range of power bus terminals.

Controlling motors of up to 4kW directly from any of the principal fieldbus systems is straightforward and inexpensive with the new KL8001 range of Power Bus Terminals from Hayes Control Systems Used in conjunction with an ordinary contactor, the Power Bus Terminal provides all of the functions required for motor control and protection, as well as an extensive range of monitoring facilities which allow the motor's performance to be continuously evaluated

Power Bus Terminals are equally suitable for use in small, plant-mounted distributed control panels, and in large centralised control systems.

Developed and manufactured in Germany by Beckhoff, for whom Hayes Control Systems is the sole UK distributor, KL8001 Power Bus Terminals mount directly onto suitable contactors, such as those in the Siemens Sirius range.

Interfacing with the fieldbus system is carried out using Beckhoff bus couplers, which are available in versions to suit all major protocols, including, for example, Profibus, DeviceNET, Modbus, and Beckhoff's own fibre-optic based Lightbus.

Power Bus Terminals not only control the contactor coil, but also provide comprehensive motor protection.

The overload characteristics can be set to provide standard Class 5, 10, 15, 20, 25 and 30 protection, and the units also provide protection against phase imbalance, phase failure and earth faults.

Since Power Bus Terminals, unlike conventional overload protection relays, are connected upstream of the contactor, they can also inhibit starting in the event of undervoltage, or if the phase sequence is incorrect.

These features provide valuable additional safeguards against motor and equipment damage.

During operation, KL8001 Power Bus Terminals from Hayes Control Systems continuously monitor the motor voltage and current, along with active and reactive power.

All of this data is available to the control system via the fieldbus interface, allowing users, for example, to detect impending fault conditions, and take preventative action before a motor trip occurs.

Hayes Control Systems is the leading UK expert in the design and supply of complete automation solutions based on open-architecture PC technology.

The company is the exclusive UK distributor for Beckhoff in Germany, whose products include fieldbus-independent input/output systems, industrial PCs, and soft programmable controllers which use standard PC hardware, and which can also provide sophisticated motion control functions.

In all of its product areas, Hayes Control Systems champions an open-systems approach, which avoids the technical limitations, high costs and restricted availability associated with proprietary equipment.

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