EK SERIES SAFETY DOOR SWITCH Description The EK series is a tongue (or key) operated safety interlock switch designed to fit at the leading edge of sliding, hinged or lift-off guards. With its dual entry slots and rotatable head, the versatile EK series can offer up to eight different actuator entry options. Operation of the switch is achieved through the insertion of a specially profiled stainless steel key that is permanently mounted to the guard door. Available with one N.C. safety contact and one N.O. auxiliary contact or two N.C. contacts, the EK series is sealed to IP67 and o has various conduit entries. A blanking plug is supplied for the unused key entry. Available accessories include a 90 actuator. Features z Fits on 25mm tubing, ideal for small, light weight guards z Contacts: Slow action 1N.C. /1N.O 2N.C. snap action 1N.C./1N.O. z Positive opening mechanism z Double-insulation structure z Eight possible actuator entry points, easy to install o z 90 and straight key z IP67 enclosure rating z Robust stainless steel keys Specifications Standards EN60947-5-1, UL508,EN50047, EN1088, Approvals cULus, CE Positive Opening Operation NC Contact Utilization Category AC15 A600 Thermal Current 10A Rated Insulation Voltage 600V AC Rated Impulse Withstand Volt 2500V AC Insulation Resistance 100M min. (DC 500V) Contact Resistance 25m max. (initial) Travel For Positive Opening Various (see Product Selection table) Max Actuation Frequency 2 cycle/sec Enclosure Material UL approved glass-filled polybutylene terephthalate Actuator Material Stainless steel Enclosure Protection IP 67 Operating Temperature Min -25C (-18F) Max 80C (+176F) Pollution Degree 3 Protection Against Electric Shock Class II (Double Insulation) 7 Mech. Life Expectancy 1 x 10 Cycles min Electrically Life Expectancy 150,000 Cycles min Vibration IEC 68-2-6, 10-55Hz 1 Hz, Excursion: 0.35mm, 1 octave/min Conduit Entry Various (see Product Selection table) Fixing 2 x M4 A15 HIGHLY Design, specifications are subject to change without notice. EK SERIES SAFETY DOOR SWITCH Structure description Head Oil Seal The head can be mounted in four The plunger has an O ring. The switch directions. The operation Key can be casing ensures IP67 (except the keyhole, inserted in five directions including the which ensures IP00). Use the EK Series downward direction. in places where the keyhole is free from oil and metal chips. Contact Block Has a positive opening mechanism Operation Key which forcibly separates the NC The dedicated key prevents operational contacts even if they are welded. mistakes and forcibly separates the The built-in switch incorporates a contacts. pair each of NC contacts and NO contacts or two pairs of NC contacts. Cover Conduit The cover, with a hinge on its lower Wide switch variations. part, can be opened by removing Pg13.5 PG11 the screw of the cover, which 1/2-14NPT ensures ease of maintenance and M16 M20 wiring. Product Selection EK- - - 1 2 3 1. THREAD DIMENSION OF LEAD EXIT 2. CONTACT TYPES 3. Key type 1:PG13.5 (s) 5: M16 (c) 15:1NC/1NO SLOW ACTION (BBM) (s) F: Flat (o) 2:1/2NPT (c) 6: M20 (o) 25:2NC SLOW ACTION (o) R: Right angle (s) 4: PG11 (o) 7: CONNECTOR (c) 35:1NC/1NO SNAP ACTION (c) A: Adjustable (c) *(s):standard (o):option (c): customization M12 Connector pin arrangement Contact Form (Diagrams Show State With Key Inserted) OPERATION DIAGRAMS TYPE CONTACT FORM CONNECTOR PIN ARRANGEMENT Closed Open Slow action 1NC/1NO EK--15- (See Note 1) Slow action 2NC EK--25- (See Note 2) Snap action 1NC/1NO EK--35- (See Note 1) Note: 1. Only NC contact 11-12 has an approved positive opening mechanism. 2. NC contacts 11-12 and 21-22 have an approved positive opening mechanism. A16 HIGHLY Design, specifications are subject to change without notice.