MK7 Series MEDER electronic Cylindrical Reed Sensors with M8 Thread DESCRIPTION MK7 sensors are magnetically operated Reed proximity switches in a cylindrical form with an 8 mm x 0.75 thread and connecting cable or coupler. The sensor can be screwed directly onto a fixed surface with the actuating magnet on the moving surface. The widespread termination “T” or “U” makes the MK7 series compatible with several inductive and magnetic proximity sensors. APPLICATIONS • Position and limit switch Pneumatic or hydraulic actuator position Indication and end travel limit switch • Door and window contacts Security system applications • Level sensor Use with magnetic floats for water level detection in coffee makers, washing machines or dishwashers FEATURES • Form A, B, and C available • High power switches available • Other cables, connectors and colors available • Various case sizes available • Five operate sensitivities available • A choice of cable terminations and lengths are available DIMENSIONS All dimensions in mm [inches] www.meder.com 182 Germany # ++49-(0)7733-94870, USA # 800-870-5385 MEDER electronic MK7 Series Cylindrical Reed Sensors with M8 Thread ORDER INFORMATION Part Number Example MK7 - 1A66 C - 500 W 1A is the contact form 66 is the switch model C is the magnetic sensitivity 500 is the cable length (mm) W is the termination SERIES CONTACT FORM SWITCH MODEL MAGNETIC SENSITIVITY CABLE LENGTH (mm) TERMINATION MK 7 MK7/1 - XX XX X - XXX X 66 B, C, D, E 81 A 500* W, X, Y, T, U 1 Form A Optionen 51** C, D, E 1 Form B 1 Form C 90 * Other cable length available. ** Not available in combination with MK7/1 serie. MAGNETIC SENSITIVITY SENSITIVITY CLASS PULL IN AT RANGE A 5 - 10 B 10 - 15 C 15 - 20 D 20 - 25 E 25 - 30 TERMINATION For wire and termination details please consult factory. Form C version requires 3 conductors. W The cable cut length includes: 30 mm of separated wire with 5 mm of wire stripped and tinned X The cable cut length includes: 30 mm of separated wire with individual crimped terminals Y The cable cut length includes: 30 mm of separated wire with individual crimped terminals T Standard click sensor-connector (3 pole, M8) mounted directly in casing U Cable with click sensor-connector (3 pole, M8) www.meder.com Germany # ++49-(0)7733-94870, USA # 800-870-5385 183 MK7 Series MEDER electronic Cylindrical Reed Sensors with M8 Thread CONTACT DATA All data at 20° C Contact Ratings Switch Model --> Contact For m --> Conditions Switch 51 For m A Min. Typ. Switch 66 For m A Max. Min. Typ. Max. Units 12 10 W Switching Power Any DC combination of V & A not to exceed their individual max`s. Switching Voltage DC oder peak AC 250 200 V Switching Current DC oder peak AC 0.5 0.5 A Carry Current DC oder peak AC 1.5 1.25 A Static Contact Resistance w / 0.5 V & 10 mA 150 150 mΩ Dynamic Contact Resistance Measured w / 0.5 V & 50 mA 1.5 ms after cloure 200 200 mΩ Insulation Resistance across Contacts 100 Volt applied 1011 1010 * Ω Breakdown Voltage across Contacts Voltage applied for 60 sec 350 225 * VDC Operate Time, incl. Bounce Measured w / 100 % overdrive 1.0 0.5 ms Release Time Measured w / no coil suppression 0.1 0.1 ms Capacitance @ 10 kHz across contact 0.2 0.2 pF Contact Operation ** Must Operate Condition Steady state field 15 30 10 30 AT Must Release Conditon Steady state field 6 27 4 27 AT Environmental Data Shock Resistance ½ sine wave duration 11 ms 50 50 g Vibration Resistance From 10 - 2000 Hz 20 20 g Ambient Temperature 10°C/ minute max. allowable Storage Temperature 10°C/ minute max. allowable Soldering Temperature 5 sec. dwell -20 -35 85 85 -20 -35 260 85 0 85 0 260 0 C C C Please note: The indicated electrical data are maximum values and can very downwards when using a more sensitive switch. * Insulation resistance of 1012 and breakdown voltage of 480 VDC is available. ** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch sectio. Consult factory if more detail is required. www.meder.com 184 Germany # ++49-(0)7733-94870, USA # 800-870-5385 MEDER electronic MK7 Series Cylindrical Reed Sensors with M8 Thread CONTACT DATA Switch Model --> Contact For m --> All data at 20 0C Contact Ratings Conditions Switch 81 For m A Min. T yp . Switch 90 For m B / C Max. Min. T yp . Max. Units Switching Power Any DC combination of V & A not to exceed their individual max.'s 5 3 W Switching Voltage D C or peak A C 90 175 V Switching Current D C or peak A C 0.5 0.25 A Carry Current D C or peak A C 1.0 1.2 A Static Contact Resistance w/ 0.5V & 10mA 200 150 mΩ Dynamic Contact Resistance Measured w/ 0.5V & 50mA 1.5 ms after closure 200 250 mΩ Insulation Resistance across Contacts 100 Volts applied 109 109 Ω Breakdown Voltage across Contacts Voltage applied for 60 sec. min. 100 200 VD C Operate Time, incl. Bounce Measured w/ 100% overdrive 0.5 0.7 ms Reset Time Measured w/ no coil suppression 0.1 1.5 ms Capacitance @ 10kHz across contact 0.2 1.0 pF Contact Operation ** Must Operate Condition Steady state field 5 10 15 30 AT Must Reset Condition Steady state field 2 9 6 27 AT g Environmental Data Shock Resistance 1/2 sine wave duration 11ms 30 50 Vibration Resistance From 10 - 2000 Hz 10 20 0 Ambient Temperature 10 C/ minute max. allowable 0 Storage Temperature 10 C/ minute max. allowable Soldering Temperature 5 sec. dwell -20 -35 85 85 -20 -35 260 g 85 0 C 85 0 C 260 0 C Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. ** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more detail is required. www.meder.com Germany # ++49-(0)7733-94870, USA # 800-870-5385 185