242 www.meder.com meder electronic reed sensors with screw fas - tening mounting holes description mk12 sensors are magnetically operated reed sensors designed for screw mounting. the larger casing permits the use of higher rated switches. the sensor should be mounted on a fxed surface with the actuating magnet on the moving surface. introduction or removal of the magnetic feld determines the closing and opening of the reed switch. applications mk12 series ? position and limit switch pneumatic or hydraulic actuator position ? end motion detection for linear drive indication and end travel limit switch ? machine industry end motion detection and door/fap control dimensions all dimensions in mm [inch] 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 ? ? ? ? ? ?
243 www.meder.com meder electronic mk12 series magnetic sensitivity termination part number example mk12 - 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 order information for wire and termination details please consult factory. form c version requires 3 conductors. reed sensors with screw fastening mounting holes sensitivity class pull in at range b 10 - 15 c 15 - 20 d 20 - 25 e 25 - 30 series contact form switch model magnetic sensitivity cable length (mm) termination mk12 - xx xx x - xxx x options 1 form a 66 b, c, d, e 500 * w 52, 85 c, d, e 1 form b 1 form c 90 * other cable lengths available w the cable cut length includes: 5mm of wire stripped and tinned
244 www.meder.com meder electronic reed sensors with screw fas - tening mounting holes mk12 series contact data all data at 20 c switch model contact form switch 52 form a switch 66 form a contact ratings conditions min. typ. max. min. typ. max. unit switching power any dc combination of v & a not wrh[fhhwkhdopd[v 50 70 (va) 10 w switching voltage dc or peak ac 250 200 v switching current dc or peak ac 0.5 0.5 a carry current dc or peak ac 2.5 1.25 a static contact resistance w/ 0.5 v & 10ma 200 150 p dynamic contact resistance measured w/ 0.5 v & 50 ma , 1.5 ms after closure 200 p insulation resistance across contacts 100 volts applied 10 10 10 10 * breakdown voltage across contact voltage applied for 60 sec. min. 600 225* 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 at 10 khz cross contact 0.2 0.2 pf contact operation ** must operate condition 6whdvwdwhho 10 30 10 60 at must release condition 6whdvwdwhho 4 27 4 54 at environmental data shock resistance 1/2 sinus wave duration 11 ms 50 50 g vibration resistance from 10 - 2000 hz 20 20 g ambient temperature &pwhpd[doordeoh -20 85 -20 85 o c stock temperature &pwhpd[doordeoh -35 85 -35 85 o c soldering temperature 5 sec. dwell 260 260 o c 3ohdvhrwh7khfdwhhohfwfdodwddhpd[ppdohvdfddrdvkhvdprhvhvwh switch. * insulation resistance of 10 12 and breakdown voltage of 480 vdc is available. 7khvhdhvhihwrwkhfwprh5hh6wfkhvhvfehr5hh6wfkvhfwr&rvowidfwriprh detail is required.
245 www.meder.com meder electronic mk12 series contact data reed sensors with screw fastening mounting holes all data at 20 c switch model contact form switch 85 form a switch 90 form b / c contact ratings conditions min. typ. max. min. typ. max. unit switching power any dc combination of v & a not wrh[fhhwkhdopd[v 100 20 w switching voltage dc or peak ac 400 175 v switching current dc or peak ac 1.0 0.5 a carry current dc or peak ac 2.5 1.0 a static contact resistance w/ 0.5 v & 10 ma 150 150 p dynamic contact resistance measured w/ 0.5 v & 50 ma , 1.5 ms after closure 200 250 p insulation resistance across contacts 100 volts applied 10 10 10 9 breakdown voltage across contact voltage applied for 60 sec. min. 4000 200 vdc operate time incl. bounce measured w/ 100 % overdrive 1.0 0.7 ms release time measured w/ no coil suppression 0.1 1.5 ms capacitance at 10 khz cross contact 0.2 1.0 pf contact operation * must operate condition 6whdvwdwhho 20 60 15 40 at must release condition 6whdvwdwhho 12 54 at environmental data shock resistance 1/2 sinus wave duration 11 ms 50 50 g vibration resistance from 10 - 2000 hz 20 20 g ambient temperature &pwhpd[doordeoh -20 85 -20 85 o c stock temperature &pwhpd[doordeoh -35 85 -35 85 o c soldering temperature 5 sec. dwell 260 260 o c 3ohdvhrwh7khfdwhhohfwfdodwddhpd[ppdohvdfddrdvkhvdprhvhvwh switch. 7khvhdhvhihwrwkhfwprh5hh6wfkhvhvfehr5hh6wfkvhfwr&rvowidfwri more detail is required.
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