Safety Switches
160Pages

03-SafetySw_1_Tongue:03-SafetySw1 Tng.qxd 5/6/2010 10:52 AM Page 3-2 Safety Switches Selection Flowchart Pro Prosafe General Sequential Access Control? Yes No Guard Locking 1- Does the machine have a long run down? (high inertia machine) Yes No 2-Opto-electronics Non-Contact Is it a washdown environment? Limit Or Yes No 3-Interlock Switches Type of Guard Swinging Sliding Operator Interface Hard Guarding Light Guard Removable Light Guard d Recommended Product Type Tongue Guard Locking Logic Non-Contact Hinge Power Visit our website: www.ab.com/catalog 3-2 R Publication S117-CA001A-EN-P

Safety Switches Selection Tips Sequential Access Control A Sequential Access Control system requires that a predetermined sequence of events takes place or that hazards have been reduced before operators can become exposed to them. Prosafe trapped key interlocks are a mechanical system based on coded keys that achieves this via the premise that no single key can be used in two places at once. And because of their mechanical operation, Prosafe trapped key interlocks are widely used in applications where the location of plant, environment or explosive atmospheres make the use of electrical...

Safety Switches Technology Overview Tongue Interlock Switches Tongue interlock switches are the most commonly used technology for door interlocking. They detect the movement of a guard using a key fitted to an opening in the switch body. Available in a variety of packages, contact configurations and degrees of holding force, these switches are generally the lowest-cost solution. The use of flexible keys also enhances tolerance to misalignment to address an even broader range of applications. Applications Common Misapplications • Wide range of doors • Washdown • Heavy debris • Cutting fluids...

03-SafetySw_1_Tongue:03-SafetySw1 Tng.qxd 5/6/2010 10:52 AM Page 3-5 Safety Switches Technology Overview Hinge Interlock Switches Applications Common Misapplications Large doors Doors with poor hinge alignment Limit Switches Features/Benefits Available in a variety of actuators and contact configurations, safety position (limit) switches satisfy Machinery Directive requirements. 802T limit switches with direct opening action offer positive opening safety contacts in a rugged NEMA-style housing for use in control reliable and other safety applications, while 440P IEC limit switches provide...

03-SafetySw_1_Tongue:03-SafetySw1 Tng.qxd 5/6/2010 10:52 AM Page 3-6 Safety Switches Interlock Switches Overview Versatility General Many safety switches allow the head of the switch to rotate, offering different options on how the switch can be operated and mounted on the guard. This offers flexibility to best fit typical applications. Elf, Cadet3, MT-GD2, 440G-MT The head can be rotated 4 times at 90º allowing the key to fit the switch in 8 different positions. 1- Trojan T15, Trojan 5, Trojan 6 (Not GD2 Models) The head rotates 180º allowing the key to fit the switch in 4 different...

03-SafetySw_1_Tongue:03-SafetySw1 Tng.qxd 5/6/2010 10:53 AM Page 3-7 Safety Switches Interlock Switches Overview Accessories for Tongue and Guard Locking Switches The correct actuator for your application General A large variety of tongue actuators are available: Standard: 90º, Flat, Standard Flexible: Semi and Fully Specialty: Extended Flat and GD2 models GD2 actuators are dedicated actuators for GD2 models and are not suitable for use with standard models. Power Logic Operator Interface Extended flat type actuator is used mostly when the actuator is mounted on a chain and inserted in the...

Safety Switches Interlock Switches Product Selection Visit our website: www.ab.com/catalog 1 3-8 Publication si 1 7-OAOO-I A-FN-P Guarclima/ter

Safety Switches Interlock Switches Safety Switches and Connectors Many interlock switches are offered with connectors allowing easy installation and replacement on-site, reducing downtime. Standard cordsets and connectors can be used to connect these products directly to: • Terminal Blocks • Safety Distribution Boxes • ArmorBlock™ Guard I/O (IP 67 Safety I/O Blocks on DeviceNet™ Safety) Type of Connector by Product Family Connection to ArmorBlock Guard I/O Other Connectors Type of Connector by Product Family (continued) Connection to ArmorBlock Guard I/O Other Connectors Note: All...

Safety Switches Tongue Switches The Elf is a tongue-operated (or key-operated) safety interlock switch designed to fit at the leading edge of sliding, hinged or lift-off guards. The Elf's unique miniature housing (only 75 x 25 x 29 mm (2.95 x 0.98 x 1.14 in.)) makes it the smallest interlock currently available. It is designed for smaller machines such as printers, copiers and 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...

Safety Switches Tongue Switches Product Selection § For connector ratings see page 3-9. With a 5-pin micro (M12) connector, not all contacts are connected. See Typical Wiring Diagram on page 3-13 for wiring details. Recommended Logic Interfaces Safety Outputs Auxiliary Outputs Reset Type Power Supply Single-Function Safety Relays for 2 N.C. Contact Switch Single-Function Safety Relays for 1 N.C. & 1 N.O. Contact Switch Modular Safety Relays Note: For additional Safety Relays connectivity, see the Safety Relays section (page 5-8) of this catalog. For additional Safety I/O and Safety PLC...

Safety Switches Tongue Switches Approximate Dimensions Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes. Visit our website: www.ab.com/catalog 1 3-12 Publication si 1 7-OAOO-I A-FN-P Guarclima/ter

Safety Switches Tongue Switches Typical Wiring Diagrams Contact Configuration Contact Action * Replace symbol with 2 (2 m), 5 (5 m) or 10 (10 m) for standard cable lengths. 1 Visit our website: www.ab.com/catalogs