Safety-Related Control Relays:
easySafety Added to the easy Family

The easy family, consisting of the easyRelay (control relays), easyHMI (HMI systems) and easyControl (compact PLCs), covers a large number of applications in the standard controller environment. From 2008 Moeller will be presenting easySafety - its latest member of the easy family. easySafety provides a solution for safety-related tasks, whilst offering the simplicity and flexibility of the easy family and the performance of an easy800. The safety-related control relay meets the highest requirements. This complies with Category 4 in accordance with EN 954-1, PL e in accordance with EN ISO 13849-1, SILCL 3 in accordance with EN IEC 62061 as well as SIL 3 in accordance with EN IEC 61508. In the easySafety environment, the Machinery Directive and the relevant safety standards must be observed: The Machinery Directive has to be observed without fail, and compliance with the safety standards is highly relevant in the event of damage. easySafety offers a superb cost-efficient solution for safety-related tasks that is tailored exactly to requirements.

The devices of the easySafety series come factory shipped with a host of conventional safety relays in the form of safety function blocks such as: Emergency-stop, guard door monitoring optionally with the monitoring of guard locking, light curtain with and without muting, two-hand control button, safety switch mat, enable switch, safety foot switch, operating mode selector switch, zero and overspeed monitoring, safety timing relay and safety markers.

The safety function blocks of easySafety can either be configured from a PC or directly on the device. The easySoft-Safety PC software offers users a convenient configuration environment. This enables the safety configuration to be created, simulated in the conventional easy circuit diagram language and transferred to the device. If users do not wish to utilise software or transfer cables, devices of the easySafety series with integrated display and keypad are also available. Modifications or complete configurations can be carried out directly on the device. The configuration created can be transferred by memory card to the easySafety device.

An integrated device display offers benefits if a fast and clear diagnostics function is required in the form of a text display. If messages are not to be hidden behind switch cabinet doors, the information output can also be fitted in a switch cabinet door - for this users can simply use the remote MFD display unit in combination with a CP4 module. In this case the cost-efficient use of an easySafety device without a display and keypad is recommended.

easySafety offers more than a stand-alone safety control relay. In addition to the safety circuit diagram contained in the safety configuration, the safety control relay also processes a standard circuit diagram. This can be used for standard tasks such as the processing of diagnostics messages or the general control tasks on a machine.

The safety and standard circuit diagrams are strictly separated on the easySafety. Both circuit diagrams can be protected separately with up to three different password levels. This allows access by different groups of people so that they can view and/or edit the unlocked circuit diagrams. If any access to the safety configuration is to be prevented, the person responsible simply locks the safety program and destroys the virtual key. This prevents the possibility of any subsequent modifications. Any change on the safety configuration causes a change in the safety checksum. It is part of the technical documentation and is subject to the declaration of conformity.

The easySafety devices offer 14 safety inputs and either have four relay outputs or one redundant output plus four transistor outputs. All outputs on the device are designed as safety outputs. The device inputs can be read in both circuit diagrams, and the outputs can be write accessed either by the safety or the standard circuit diagram.

easySafety adds safety applications to the easy family perfectly: Many easy components can now also be used with easySafety devices. If users require other standard inputs and outputs for their standard application, they simply use the expansions of the easyRelay series. An easySafety device can also be networked via the integrated easyNet with up to seven other devices from the easy family. This applies equally to easyRelay, easyHMI or easyControl devices. Standard information can thus be exchanged between the individual devices simply and cost-efficiently. The connection to a PLC is also ensured: Whether Profibus-DP, CANopen or DeviceNet - the easy family already offers coupling modules that can be used by easySafety devices.

easySafety is based on the simplicity of the easy circuit diagram philosophy so that every current easy user can quickly learn how to operate it. A beginners' course provided in the online help of the programming software makes it easy for beginners to learn the use of easySafety and the easySoft-Safety PC software.

Moeller GmbH, 53105 Bonn
Tel.: +49 (0)228 602-0
Fax: +49 (0)228 602-2275
E-Mail: presse@moeller.net
Internet: www.moeller.net
Please direct your enquiries to:
Corporate Communications, Tel.: +49 (0)228 602-2915

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