Interlock Switches Tongue Switches Elf Specifications Standards EN954-1, ISO13849-1, IEC/EN60204-1, NFPA79, EN1088, ISO14119, IEC/ EN60947-5-1, ANSI B11.19, AS4024.1 Category Cat. 1 Device per EN954-1 Dual channel interlocks suitable for Cat. 3 or 4 systems Approvals CE marked for all applicable directives, cULus and BG Safety Contacts 1 N.C. or 2 N.C. direct opening action Designation/Utilization Cat. A600/AC-15 (Ue) (Ie) N600/DC-13 (Ue) (Ie) 600V 1.2A 600V 0.4A 500V 240V 120V 1.4A 3A 6A 500V 250V 125V 0.55A 1.1A 2.2A Description Thermal Current (lth) 10A The Elf is a tongue (or key) operated safety interlock switch designed to fit at the leading edge of sliding, hinged or liftoff guards. The Elf ’s unique miniature housing (only 75 × 25 × 29mm) makes it the smallest interlock currently available. It is designed for smaller machines such as printers, copiers or domestic machinery which, until now, have been unable to use safety interlocks due to space restrictions.With its dual entry slots and rotatable head, the versatile Elf can offer up to eight different actuator entry options. Minimum Current 5V 5mA DC Operation of the switch is achieved through the insertion of a specially profiled stainless steel key that is permanently mounted to the guard door. The semi-flexible key allows the Elf to be used on small radii doors (60mm or 2.36in). Min Operating Radius The Elf is available with 2 N.C. or 1 N.O. and 1 N.C. safety contact and conduit entry (1 × M16 or connector style) sealed to IP67 (watertight and dustproof). A blanking plug is supplied for the unused key entry. Features • • • • • Ideal for small, light weight guards The smallest interlock switch available Contacts, 2 N.C. or 1 N.O. & 1 N.C. Eight possible actuator entry points, easy to install Environmental protection: IP67 Safety Contact Gap >2mm (0.078in) Rtd. Impulse withstand Volt. (Uimp) 2500V Auxiliary Contacts 1 N.O. Pollution Degree ➊ 3 Actuator Travel for Positive Opening 3.6mm (0.141in) 150mm (5.90in) 60mm (2.36in) with GD2 kit Break Contact Min Force 6N (1.35lb) Max Actuation Speed 160mm (6.29in) per sec Max Actuation Frequency 2 Cycle per sec Case Material UL approved glass filled polyester Actuator Material Stainless Steel Protection IP67 Conduit Entry 1 x M16 or quick-disconnect style Operating Temperature -20°C to +80°C (-4°F to +176°F) Fixing 2 x M4 Mounting Any position Mechanical Life 1,000,000 operations Electrical Life 1,000,000 operations Weight 60g (2.11oz) Colour Red ➊ Conductive pollution occurs, or dry, non conductive pollution occurs which becomes conductive due to condensation. Applications Note: Lift-off guards require good alignment when using tongue actuated interlock switches. IMPORTANT: It must not be possible to lift the guard without actuating the interlock. An interlock on either side may be required. 3-2 Interlock Switches Tongue Switches Elf Product Selection Catalogue Number Safety Contacts 1 N.C. Auxiliary Contacts BBM/MBB 1 N.O. 2 N.C. — BBM Actuator M16 Conduit M16 Conduit/ 1/2in Adaptor Quick Disconnect Flat 440K-E33036 440K-E33029 440K-E33074 90° 440K-E33040 440K-E33030 440K-E33025 GD2 Metal Align. Guide w/Semi-Flex Actuator — 440K-E33031 440K-E33075 — 440K-E33014 — 440K-E33076 Flat 440K-E33080 440K-E33037 440K-E33077 90° 440K-E33041 440K-E33045 440K-E33024 GD2 Metal Align. Guide w/Semi-Flex Actuator — 440K-E33046 440K-E33078 — 440K-E33047 — 440K-E33079 — Recommended mating cable, 2m (6.5ft). See page 15-10 for details and additional lengths. 889D-F4AC-2 Accessories Description For Dimensions See Page Catalogue Number Flat Actuator 14-6 440K-A21014 90° Actuator 14-6 440K-A21006 GD2 Metal Alignment Guide with Semi-Flexible Actuator 14-6 440K-A21030 Alignment Guide 14-6 440K-A21069 Mounting Plate 14-6 440K-A33624 3-3 Interlock Switches Tongue Switches Elf Approximate Dimensions—mm (inches) Dimensions are not intended to be used for installation purposes. 75 (2.95) 25 (0.98) 29 (1.14) End Entry 4 (0.16) 75 (2.95) 4.5 (0.18) 12.5 (0.49) 6 (0.24) 17.5 (0.69) 6 (0.24) 4.5 (0.18) 4 (0.16) R 2.1 Front Entry 13 (0.51) 6 (0.24) 1 x M16 12.5 (0.49) 25 (0.98) 18 (0.71) 3 (0.12) 16.5 (0.65) 34.5 (1.36) 36 (1.42) Typical Wiring Diagrams (shown with guard closed, actuator inserted) 1 N.C. + 1 N.O. 2 N.C. 23 11 21 11 24 12 22 12 1 N.C. + 1 N.O. Connector Pinout Terminal 1 11 2 N.C. Contact Terminal Contact 11 N.C. 2 1 3 12 3 4 2 23 Contact Open Contact Closed Actuator withdrawal distance from full insertion 21 N.O. 4 Contact Action 24 N.C. 22 1 N.C. + 1 N.O. (BBM) 6 11/12 23/24 3.8 4.2 3-4 N.C. 12 0mm 2 N.C. 6 11/12 21/22 4 0mm Interlock Switches Tongue Switches Elf Application Details 90° actuator Head Position 2 Head Position 3 Front entry Front entry 8 possible actuator entry points Head Position 4 Side entry Side entry Front entry Head Position 1 Top entry Front entry Flat actuator The head rotates 360° in 90° increments to give 8 possible actuator entry points. Bottom entry GD2 Metal Alignment Guide with semi-flexible actuator 3-5