Pneumatic And Hydraulic Equipment Page 835

N O R G R E N CS8-2 Series CS7 Series 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, magnetism is induced into the leads and forces the contacts to close. Hall Effect/Magnetoresistive Working Principle The solid state (no moving parts) magnetoresitive sensor responds to a north or south 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. Application Recommendations and Precautions 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 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. Switch Model CS8-2-04 CS7-04 CS8-2-31 CS7-31 CS8-2-32 CS7-32 Bore Sizes 1-1/8" thru 2-1/2" 2" thru 4" 1-1/8" thru 2-1/2" 2" thru 4" Switch Type Reed Switch Hall Effect & Light, *MOV & Light Sourcing PNP Sinking NPN Function SPST Normally Open Normally Open Switching Voltage 5-120 VDC/VAC 6-24 VDC 50/60 Hz Switching Current .5 Amp Max 1 Amp Max .5 Amp Max 1 Amp Max .5 Amp Max 1 Amp Max .005 Amp Min Switching Power 10 VA 30 Watts 12 Watts Max 24 Watts 12 Watts Max 24 Watts Max Voltage Drop 3.5 Volts .5 Volts Magnetic Sensitivity 85 Gauss Enclosure Classification NEMA 6 & CSA Approved NEMA 6 & CSA Approved Temperature Range -22F to +176F -22F to +176F -22F to +176F Wiring Diagrams Specifications *Metal Oxide Varistor Surge Suppression. NOTE: All CS7 and CS8 Series Switches are supplied with 9 foot leads. CYLINDER SWITCHES TWIN ROD SERIES N AIR CYLINDERS norgren pneumatics JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 835 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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