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Lenze has developed the 8400 Protec frequency inverter designed for use in large conveyor installations such as airports and warehouses.

The 8400 Protec is available for standard AC motors up to 4kW, which covers 98 per cent of conveyor installations.

It is designed for wall mounting close to the motor and has an IP65 enclosure.

Installation is made easier by looping power cables from one inverter to the next and, provided the inverter is positioned close to the motor, no shielded cables are needed.

Drives can be networked by the built-in CAN bus or optional Profibus and Profinet.

The rugged alloy housing suits operation in ambient temperatures from -25C to +55C.

Downtime is kept to a minimum by clear diagnostics with status LEDs and plug connections for power and signals.

Cost-effective decentralised positioning applications can be implemented using the 8400 Protec with standard asynchronous motors.

Switch-off positioning, table positioning and absolute positioning are available with optional feedback from incremental and absolute encoders.

Programming is said to be easy with Lenze’s L-force Engineer software, which has freely editable function block interconnections.

The 8400 Protec meets the requirements of EN ISO 13849-1 conforming to SIL3.

Safety signals – for example, from light guards and proximity switches – can be connected directly to the drive, taking out the cost of safety relays and monitors.

A 48W power supply for sensors is integrated.

Safe torque off means there is no need to interrupt the mains supply in the event of a safety incident.

Alternatively, Safe Stop 1 brings the load to a controlled stop, or Emergency Stop can be activated.

The 8400 Protec can be linked into a safe bus system such as Profisafe.

For large conveyor installations, decentralised drives offer savings in cabling, panel space and installation time, according to Lenze.

The 8400 Protec converters also have options for positioning and safety that reduce component count and save money.

With 40 years' experience, Lenze Ltd are specialists in drive and automation equipment for the UK market. Today Lenze employ 60 people and operate with management systems approved to ISO 9001:2008.

Experience and expertise

The engineering comes first. With almost 50 per cent of our staff being qualified engineers, the right-sized technical solution to your problem is our goal. Our vision of right sizing means to work with you in order to achieve the optimum solution in terms of cost and performance.

The complete drive system  

Our products fit together to make the complete drive and automation system. Lenze products include automation, controllers, servos, inverters and geared motors. Our Techdrives division adds essential drive components such as couplings, actuators and locking bushes to complete your design.  

Worldwide, we are there to help you

Lenze companies are in 29 countries and have sales offices in a further 24. Full product information is available on our website and the international helpline makes it easy to contact us.

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