D4F

D4F

D4F

Product catalog summary
Overview
The D4F is the smallest safety limit switch globally, featuring a direct opening mechanism and available in two- or four-contact constructions. It is highly sensitive, protected to IP67 standards, and complies with EN115-1, EN81-1, and EN81-2 standards for slow-action models. It is certified by UL, EN (TÜV), and CCC.

Model Number Structure
The model number is determined by the built-in switch type, actuator type, cable length, and cable pull-out direction. Options include:
  • Built-in Switch: 1NC/1NO, 2NC, 2NC/2NO, 4NC (all slow-action)
  • Actuator: Roller plunger (metal roller), Roller lever (metal lever, resin roller)
  • Cable Length: 1 m, 3 m, 5 m
  • Pull-out Direction: Horizontal (R), Vertical (D)


Specifications
The D4F adheres to EC Directives and certified standards, including the Machinery Directive and Low Voltage Directive. It has a rated operating current of 0.75 A for AC-15 and 0.27 A for DC-13, with a rated operating voltage of 240 V for AC and 250 V for DC.

Characteristics
Designed for durability, the switch has a mechanical endurance of 10 million operations and electrical endurance of 1 million operations under specified conditions. It operates at speeds from 1 mm/s to 0.5 m/s and frequencies of 120 operations/minute mechanically and 30 operations/minute electrically.

Structure and Nomenclature
The D4F features a direct opening mechanism for NC contacts, ensuring separation in case of contact welding. The lever can be adjusted in 9-degree increments, and the cable can be oriented horizontally or vertically.

Dimensions and Operating Characteristics
Dimensions are provided with a tolerance of 0.4 mm. Operating characteristics include operating force, release force, pretravel, overtravel, and direct opening travel.

Safety Precautions
Users should not use more than one D4F side-by-side and avoid switching circuits for multiple standard loads. Cables should not be flexed repeatedly, and excessive force should be avoided. The switch should not be used submerged in oil or water.

Wiring
Wires are identified by color, and terminal numbers are based on wire insulation color. Safety contacts are direct-opening NC contacts, while auxiliary contacts are used for monitoring.

Mounting and Handling
Proper mounting requires M4 screws and washers, with specific torque values provided. The lever angle can be adjusted, and care should be taken to avoid damaging the actuator or rotary spindle.

Terms and Conditions Agreement
Read and Understand: It is essential to read and understand the catalog before purchasing products. For any questions or comments, consult an OMRON representative.

Warranties:
  • Exclusive Warranty: Products are warranted to be free from defects in materials and workmanship for twelve months from the sale date. Omron disclaims all other warranties.
  • Limitations: Omron makes no warranty regarding non-infringement, merchantability, or fitness for a particular purpose. The buyer is responsible for determining product suitability for their intended use.
  • Buyer Remedy: Omron may replace, repair, or refund the purchase price of non-complying products, provided they were properly handled and not misused.

Limitation on Liability: Omron is not liable for special, indirect, incidental, or consequential damages. Liability is limited to the product's individual price.

Suitability of Use: Omron is not responsible for compliance with standards or regulations in the buyer's application. The buyer must ensure the product's suitability and take responsibility for its application.

Programmable Products: Omron is not responsible for user programming or its consequences.

Performance Data: Data provided is a guide and does not constitute a warranty. Actual performance is subject to Omron's warranty and limitations.

Change in Specifications: Specifications and accessories may change without notice. Consult Omron representatives to confirm specifications.

Errors and Omissions: Information is checked for accuracy, but Omron assumes no responsibility for errors or omissions.

Note: Specifications are subject to change for product improvement without notice.
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Catalog excerpts

D4F-1

Note: Contact your sales representative for details on models with safety standard certification. Smallest Class of Safety Limit Switches in the World •The world's smallest limit switch with a direct opening mechanism (four-contact construction model). • High-sensitivity safety limit switch. • Built-in switches with two- or four-contact construction are available. • Degree of protection: IP67 •Conforms to EN115-1, EN81-1 and EN81-2. (slow-action models only) •Certified standards: UL, EN (TUV), and CCC Be sure to read the “Safety Precautions" on page 6 _and the “Precautions for All Safety Limit Switches’’. 3. Cable Length 1: 1 m 3: 3 m 5: 5 m 4. Pull-outing direction of cable R: Horizontal D: Vertical 1. Built-in Switch 1: 1NC/1NO (slow-action) 2: 2NC (slow-action) 3: 2NC/2NO (slow-action) 4: 4NC (slow-action) 2. Actuator 02: Roller plunger (Metal roller) 20: Roller lever (Metal lever, resin roller) Ordering Information List of Models Safety Limit Switches (with Direct Opening Mechanism) Consult with your OMRON representative when ordering any models that are not listed in this table.

 Open the catalog to page 1
D4F-2

Specifications Standards and EC Directives Conforms to the following EC Directives: • Machinery Directive • Low Voltage Directive • EN50047 • EN60204-1 • EN ISO 14119 • GS-ET-15

 Open the catalog to page 2
D4F-3

Note: 1. The above values are initial values. 2. Once the contact is opened or closed with an ordinary load, it cannot be used for a load smaller than that. The contact surface may be rough, which impairs the reliability of contacting. *1. The degree of protection shown above is based on the test method specified in EN60947-5-1. Be sure to confirm in advance the sealing performance under the actual operating environment and conditions. *2. Durability values are calculated at an operating temperature of 5 to 35°C, and an operating humidity of 40% to 70%. Contact your OMRON sales representative...

 Open the catalog to page 3
D4F-4

Structure and Nomenclature Structure Head The plunger type of actuator can be used in a normal direction and reverse direction. Lever Improved safety of the lever-setting (Form lock configuration). Many grooves are incised on the lever and the rotating shaft that mesh with each other to prevent a slip between the lever and the rotating shaft. The lever can be set for positioning in steps of 9 degrees. Cable The cable can be pulled out in a horizontal direction or in a vertical direction. Built-in Switch Has a direct opening mechanism separating the contacts when the NC contacts are welded. Direct...

 Open the catalog to page 4
D4F-5

Dimensions and Operating Characteristics Roller lever (Metal lever, resin roller) D4F-@20-@R Roller plunger (Metal roller) D4F-@02-@R 12-dia. × 4.4, Sintered stainless steel roller Roller lever (Metal lever, resin roller) D4F-@20-@D Roller plunger (Metal roller) D4F-@02-@D 12-dia. × 4.4, Sintered stainless steel roller Note: Each dimension has a tolerance of 0.4 mm unless otherwise specified. Operating Characteristics Operating force Release force Operating position Total travel Direct opening travel DOT min. *4 Direct opening force DOF min. Note: Variation occurs in the simultaneity of contact...

 Open the catalog to page 5
D4F-6

Safety Precautions Be sure to read the precautions for All Safety Limit Switches in the website at:http://www.ia.omron.com/. Indication and Meaning for Safe Use Precautions for Safe Use Supplementary comments on what to do or avoid doing, to use the product safely. Supplementary comments on what to do or avoid doing, to prevent failure to operate, or undesirable effect on product performance. Precautions for Safe Use • Do not use more than one D4F side-by-side. • Do not switch circuits for two or more standard loads (125 VAC, 1 A). Doing so may adversely affect insulation performance. Precautions...

 Open the catalog to page 6
D4F-7

Identifying Wires Identify wires according to the color (with or without white lines) of the insulation on the wire. Cross section Insulation 9 1 2 8 7 Dummy insulator (black) External insulation sheath Core Insulator Colors Blue/white, Orange/white, Pink/white, Brown/white, Green/yellow, Brown, Pink, Orange, and Blue Example: Blue/white is a blue insulator with a white line. • To set the plunger stroke correctly, press-fit the plunger until the top of the pushing surface comes between two grooves on the plunger. Pushing surface Proper range Grooves • To set the roller lever stroke correctly,...

 Open the catalog to page 7
D4F-8

Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR...

 Open the catalog to page 8

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