OMRON Scientific Technologies, Inc. 6550 Dumbarton Circle Fremont, CA 94555 USA Toll Free: 888-510-4357
Tel: 510-608-3400 Fax: 510-744-1442 E-Mail: sales@sti.com Web site:
www.sti.com
Quick disconnect for incoming power and relay outputs
Quick disconnects up to 6 mat zone inputs
Solid-state safety output module
Safety relay output module
Description
The MC4 is a NEMA 4, 12 rated single zone mat controller. This controller may be used in applications when the diagnostic features of the MC6 may not be required. The MC4 may be ordered in either 24 VDC or the universal auto-selecting power supply for 100-240 VAC.
Additional Guarding Requirements
A safety mat system is often only one part of a machine guarding solution. If the safety mat does not protect all access to the point of operation, additional guarding must be used. Safety mat systems should only be used to detect the presence, not the absence, of a force.
Perimeter Guarding Requirements
For perimeter guarding installations, the guarded machine or robot controller must be wired such that any stop signal generated by the safety mat system will cause an immediate stop of the hazardous motion. The machine or robot must only be restarted by the actuation of a manual reset switch. This reset switch must be located outside the area of hazardous motion and positioned such that the hazardous area can be observed by the switch operator. The
purpose of this arrangement is to prevent a machine or robot from automatically restarting once the sensing weight is no longer detected by the safety mat sensing area.
Safety Standards and Precautions
A Safety Mat controller is a general purpose, safety mat control device and is not designed for any specific type, model or brand of machine. All safety-related functions of the guarded machine controls including pneumatic, electric, logic or hydraulic controls must be control reliable.
A Safety Mat controller when combined with a four-wire safety mat meets ANSI/RIA R15.06-1999, ANSI B11.19-2003 and the following applicable OSHA standards. When used with mechanical power presses, OSHA standard 1910.217(c) applies. For other applications the requirements of section 1910.212 apply.
Only use a Safety Mat controller and four-wire safety mat system on machinery that stops consistently and immediately anywhere in its cycle or stroke. Never use a Safety Mat controller and four-wire safety mat system on a full-revolution clutched press or machine. Access to the point of operation or hazardous machine area not protected by the Safety Mat controller and fourwire safety mat system must be guarded by fencing, barriers or other
appropriate methods.
The purchaser, installer and employer are responsible for meeting all local state and federal government laws, rules, codes or regulations relating to the proper use, installation, operation and maintenance of this control and the
guarded machine. See Installation and Operation Manual for details. All application examples described are for illustration purposes only. Actual installations will differ from those indicated.
