Plug-in Modules enable expansion of safety relay contacts.
Press Release Summary:
PNOZ s7.1 modules feature 3 NO safety contacts and are connected, by plug to PNOZsigma base unit safety relay type PNOZ s1, s2, s3, s4, s5, s6, or s6.1. Unit also incorporates separate feedback loop that enables module to be used as stand-alone safety relays. As many as 10 PNOZ s7.2 devices can be connected, which have 4 NO contacts and 1 NO auxiliary contact. Both devices measure 17.5 mm and are suited for automotive and paper industries.
Original Press Release:
Plug-in Modules Expand PNOZsigma Safety Relay Contacts
(CANTON, MI) - Pilz Automation Safety LP is introducing two new modules in the PNOZsigma range of slim line safety relays to enable the number of contacts to be expanded considerably, thereby offering the potential for considerable savings in cost and space compared with traditional safety relays.
The first of these models, the PNOZ s7.1, features three normally open safety contacts. It is connected - by means of a simple plug - to a PNOZsigma base unit safety relay type PNOZ s1, s2, s3, s4, s5, s6 or s6.1. In addition, the PNOZs7.1 incorporates a separate feedback loop that enables the 17.5-mm module to be used as a stand-alone safety relay.
When a PNOZ s7.1 is used either as a stand-alone unit or with a PNOZsigma base unit, further expansion is possible by connecting a maximum of 10 PNOZs7.2 modules, each having four normally open safety contacts and one normally closed auxiliary contact. Alternatively, a PNOZ s7.2 can be connected to a base unit as a single expansion module. As with the PNOZ s7.1, the PNOZ s7.2 measures 17.5 mm wide.
For applications requiring an even greater number of contacts, multiple PNOZ s7.1 modules can be used, each with a maximum of 10 PNOZ s7.2 modules. The only additional requirement is that a 24-volt power supply must be provided for each PNOZ s7.1 module. Although there is theoretically no limit to the number of PNOZ s7.1 expansion modules that can be used, each one adds 20 ms to the 50 ms reaction time of the base unit. Care must therefore be taken to ensure the total reaction time remains acceptable.
Industries where PNOZ s7.1 and PNOZ s7.2 modules are expected to prove particularly useful are automotive and paper. They are equally suitable, however, for other industries where 10 or more contacts are required.
Pilz Automation Safety L.P.
The world leader is SAFE automation, Pilz offers a full range of leading-edge safe automation products and services. The company's innovative technologies and safety expertise provides customers with the leanest and safest solutions.
Products include sensor technology, electrical monitoring relays, automation solutions with motion control, safety relays, programmable safety and control systems and an operating and monitoring range. Safe bus systems are also available for industrial networking.
Pilz also provides a comprehensive range of consulting, engineering and training services. Certified consultants provide a wide range of services worldwide such as risk assessment, safety concept, safety design, CE services and safety sign-off. To keep a company LEAN and SAFE, there is no better partner than Pilz.
