User manual OMRON D4A-N DATASHEET

[. . . ] General-purpose Limit Switch D4A-@N The Limit Switch with Better Seal, Shock Resistance, and Strength · A double seal on the head, a complete gasket cover, and other features ensure a better seal (meets UL NEMA 3, 4, 4X, 6P 12, , 13). · Block mounting method to reduce weight to 290 g. · Block mounting method also reduces downtime for maintenance. · Wide standard operating temperature range: ­40°C to 100°C (standard type). [. . . ] The Roller Lever Switch employs a system which allows selection of the operation of only one side (left or right) or both sides without use of any tools. Operating Position Mark (arrow) Roller The roller actuator is made of hardened stainless steel and excels in resistance to wear. Lever With the Roller Lever Switch, the lever can be installed anywhere in a 360° range (180° if the lever is reversed and attached to the shaft). Oil Seal Improved sealing property is ensured with a double-seal construction (a oil seal plus an X-ring seal). Switch Box Boasts long life expectancy (50 million mechanical operations or more with the 2-pole Double-break Switches and 30 million mechanical operations or more with the DPDT Double-break Switches). Ground Terminal Screw A ground terminal is provided to enhance safety. Bearings The copper-alloy bearings ensure long life expectancy. Receptacle The plug-in type receptacle provides adequate space for wiring. Conduit Opening G 1/2 conduit threads featuring high sealing property are used. (Consult your OMRON representative for details on SC connectors). A terminal box with 1/2-14NPT conduit threads is also available on request. Sealed Gasket The employed full-cover method prevents the gasket from direct exposure to oil or water spray. Switch Box Screw A Phillips screw is used to secure the switch housing for ease of use, and features a measure to prevent the screw from coming off. Note: 1. Fluoro-rubber sealed types use fluoro-rubber. F-20 General-purpose Limit Switch D4A-@N Easy-maintenance Block Mounting Block mounting makes it possible to easily assemble or disassemble the head, switch body, and receptacle of the D4A-@N by tightening or loosening the attached screws. Head Actuator Switch box Receptacle Installation Limit Switches I Operation Changing the Operating Direction The head of the side rotary type can be converted in seconds to CW, CCW, or both-way operation. Follow the procedures on the right hand side for conversion (not applicable to the Maintained, Sequential Operating, Center Neutral Operating Switches). Operating Part (Rear of Head) Operating position arrow marks Procedures 1. Dismount the head by loosening the four screws that secure it. Turn over the head to set the desired operation (CW, CCW, or both). The desired side can be selected by setting the mode selector knob shown in the figure. This knob is factory set to the "CW+CCW" (both-way operation) position. When set to the CW position, the head rotates in clockwise direction. When set to the CCW position, the head rotates in counterclockwise direction. In either case, be sure to accurately align the arrow mark to the setting position. General-purpose Limit Switch D4A-@N F-21 Head and Lever Positions The operating head can be positioned and locked in any of four 90° positions and a lever can lock in any position through 360° around the shaft of the Limit Switch. Furthermore, the lever can be reversed and attached to the shaft (refer to the figures below on the right hand side). Therefore the roller is compatible with a wide movement range of a dog. A Fork Lever Lock can be used with maintained models (D4A-0005N) only. Remove the head from the Switch by loosening the screws (the screws can be loosened but not removed from the head). The operating head can be positioned and locked in any of four 90° positions. The lever can lock in any position through 360° around the shaft. [. . . ] 11. 5 7. 9 Roller Lever D4A-A10 19. 5 19. 1 dia. 7. 9 Stainless sintered roller 38. 1 7. 3 dia. Roller Lever D4A-A20 19. 1 dia. Stainless sintered roller 7. 9 38. 1 7. 3 dia. M5 Allen bolt 18 9 M5 Allen bolt 18 9 M5 Allen bolt 18 9 16. 5 Roller Lever D4A-A30 19. 1 dia. (see note) 7. 9 Roller Lever D4A-B06 17. 5 dia. [. . . ]