Electricity + Control March 2015

HAZARDOUS AREAS + SAFETY

ROUND UP

New relay extension module safety controller

The new Leuze MSI-EM-4RO relay extension module for the MSI 200 safety controller, available from Countapulse Controls , can control multiple devices via potential-free output contacts, Gerry Bryant, managing director, says. Most modern safety sensors andActive Opto-electronic Protective Devices (AOPDs) are equipped with semiconductor outputs today.With such electronic safety-related switch- ing outputs (OSSDs), high voltages in excess of 24 V cannot be connected, however, and they are not suitable for controlling devices with high power consumption, such as contactors, locking devices, pumps and motors. In such instances, the new MSI-EM-4RO extension module with its four, one-channel or two, two-channel relay outputs helps out. At a maximum switching voltage of 250Vac/ dc, it delivers high switching power in a rugged and compact design with housing width of 22 mm. Four freely configurable message outputs indicate operating states of the total system. The extension modules are simply connected to the base module (the MSI 200 safety controller) on the DIN rail by means of mounting rail connectors. The system satisfies the requirements for Performance Level PL e in accordance with EN ISO 13849-1 and SILCL 3 in accordance with EN IEC 62061. Enquiries: Gerry Bryant.Tel. 011 615 7556 or email bryant@countapulse.co.za

New I/O modules for extreme conditions

The robust modules with the XC (extreme conditions) extension are based on standard versions. In addition to bus couplers, they also include digital and analogue input and output modules as well as a range of function modules. The PCBs used are coated with a special paint which improves their resistance to moisture and corrosive gases. This means that the new XC versions are ideal for use in applications with harsh ambient conditions, such as wind power plants or solar parks in regions with extreme climates. The new XC versions follow in the footsteps of the complete Axioline F I/O system with particularly high im- munity to interference up to 8 kV, rapid signal acquisition, and a highly robust design, which means they can handle mechanical loads such as shocks up to 30 g. Enquiries: Patrick Rowland. Email patrickr@phoenixcontact.co.za

The Axioline F I/O system from Phoenix Contact for signal acquisi- tion in the control cabinet now includes versions with an extended temperature range of -40 °C to 70° C.

March ‘15 Electricity+Control

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