Pneumatic And Hydraulic Equipment Page 817

N O R G R E N Reed Switch Working Principle Reed switch sensors contain hermetically sealed reed elements (mechanical contacts) which are open in their normal state. When a magnetic field moves within proximity of the switch, magne tism is induced into the leads and forces the contacts to close. Solid State/Magnetoresistive Working Principle The solid state (no moving parts) magnetoresistive sensor responds to a parallel magnetic pole by providing a digital signal to the output control circuit. This technique enables the sensing of weak magnetic fields, with no limit to the maximum strength of the magnetic field. Norgren solid state switches are similar to the Hall effect switch. CS7-04 Reed CS7-24 Reed CS7-31 Solid State CS7-32 Solid State 2" thru 8" Reed Switch Solid State & Light, Solid State & Light, *MOV & Light *MOV & Light, 3 Wire Sourcing PNP Sinking NPN Normally Open 5-240 VDC/VAC 24-240 VAC 6-24 VDC 6-24 VDC 50/60 Hz 1 Amp Max 4 Amp Max 1 Amp Max 50 Amp Inrush 30 Watts Max 100 Watts Max 24 Watts Max 3 Volts N/A .5 Volts 85 Gauss 85 Gauss Parallel NEMA 6 & CSA Approved -22F to +176F -22F to +176F -22F to +176F -22F to +176F NOTE: For 8" bore add 9 to part number. Example: CS7- 9 -04. For 10" and 12" bore, consult John Henry Foster Co. To provide maximum reliability. 1. Always stay within the specifications and power rating limitations of the unit installed. 2. Primary and control circuit wiring should not be mixed in the same conduit. Motors will produce high pulses that will be introduced into the control wiring if the wiring is carried in the same conduit. 3. Never connect the switch without a load present. The switch will be destroyed. 4. Some electrical loads may be capacitive. Capacitive Loading may occur due to distributed capacity in cable runs over 25 feet. Use switch Model CS7-24 whenever capacitive loading may occur. In order to obtain optimum performance and long life, magnetically operated limit switches should not be subjected to: (1) strong magnetic fields, (2) extreme temperature, and (3) excessive ferrous filing or chip buildup. Improper wiring may damage or destroy the switch. The wiring diagram, along with the listed power ratings, must be carefully observed before connecting power to the switch. Lower power switches are designed for signaling electronic circuits. Do not use on relay loads or with incandescent bulbs. Resistive loads only. Application Recommendations and Precautions NFPA AIR CYLINDERS Switches for 2" to 12" Series J & EJ Cylinders and 2" to 8" Series A & EA Cylinders norgren pneumatics JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 817 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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