Schmersal develops and produces an extraordinary wide range of high-quality switchgears for the protection of machines and plants in industrial automation and lift industry.
In the "Safe Switching and Monitoring" section, you will find an extraordinary large programme of safety-related switchgears for the position monitoring of guard doors and the non-contact protection of hazardous zones and danger points, as well as safety switching appliances for special applications.
In the "Safe Signal Processing" section, you will find safety relay modules for various safety technology applications (e.g. for emergency stop and guard door monitoring) as well as centralised programmable safety controllers and decentralised field bus systems, e.g. a modular concept for safety functions control on small machines.
In the "Automation Technology" section, you will find switching appliances for the mechanical position detection in various fields of application as well as (safety) sensors with different operating principles; this section furthermore includes a comprehensive programme of command and signalling devices.
The "Ex Switchgear" includes switchgears, which can be used - in accordance with the harmonised standards - in areas with potentially explosive atmospheres due to the presence of gas and dust, e.g. position switches, safety switches and safety sensors with non-contact operating principle.
In the "Lift Switchgears" section, you will find lift switchgears for various applications in the shaft pit, the lift car and the machine room: floor and fine-adjustment switches, positive-break door contacts, position switches, magnetic reed switches, remote alarm systems as well as the USP ultrasonic elevator positioning system.
Flexible, compact, ergonomic: control panels for the safety guard
Current innovations:
Until now, the SRB 211 series featured different safety-monitoring modules for the evaluation of the signals of conventional safety switchgear, magnetic safety switches and optoelectronic safety guards, the so-called AODP´s. The new SRB 211 series enables wiring all three types of safety switchgear to the same safety-monitoring module.
In this way, the number of variants to be manufactured by the Schmersal production department is reduced. But in the end, it is the user, who gets the advantages: due to the standardisation, Elan – the Centre of Competence of the Schmersal Group for safety-monitoring modules and safety-related control systems – can manufacture the new SRB 211 safety-monitoring modules at a more favourable price. This advantage is passed on to the customer.
Standardisation however does not imply that the user has no choice. The safety-monitoring modules are supplied in the variants ST (dual-channel control with two NC contacts), AN (antivalent; for NC/NO contact combinations) and LT (two NC contacts; with long-time time setting) with three wiring possibilities: plug-in or soldered screw terminals and plug-in cage clamps. The setting of the drop-out delay time for the STOP 1 enabling signals is also simplified for the user: this task can now be realized within a few seconds by means of a DIP switch.
The safety functions of the new SRB 211 safety-monitoring modules with com-pact 22.5 mm enclosure for control cabinet mounting include a current and voltage limitation of the input circuits as well as a reset with trailing edge.
