Small Safety Limit Switch
D4F
CSM_D4F_DS_E_5_2
Smallest Class of Safety Limit Switches in
the World
Note: Contact your sales representative for details on
models with safety standard certification.
• 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 (TÜV), and CCC
Be sure to read the “Safety Precautions” on page 6
and the “Precautions for All Safety Limit Switches” .
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Model Number Structure
Model Number Legend
D4F-@@-@@
1 2
3 4
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)
3. Cable Length
1: 1 m
3: 3 m
5: 5 m
4. Pull-outing direction of cable
R: Horizontal
D: Vertical
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.
Built-in switch
Actuator
Cable
length
Pull-outing
direction of cable
1NC/1NO
(slow-action)
Model
Roller lever 1 m
(Metal lever,
resin roller)
3m
5m
Roller
1m
plunger
(Metal roller)
3m
5m
Direct
opening
2NC
(slow-action)
Model
Direct
opening
2NC/2NO
(slow-action)
Model
Direct
opening
4NC
(slow-action)
Model
Horizontal
D4F-120-1R
D4F-220-1R
D4F-320-1R
D4F-420-1R
Vertical
D4F-120-1D
D4F-220-1D
D4F-320-1D
D4F-420-1D
Horizontal
D4F-120-3R
D4F-220-3R
D4F-320-3R
D4F-420-3R
Vertical
D4F-120-3D
D4F-220-3D
D4F-320-3D
D4F-420-3D
Horizontal
D4F-120-5R
D4F-220-5R
D4F-320-5R
D4F-420-5R
Vertical
D4F-120-5D
D4F-220-5D
D4F-320-5D
D4F-420-5D
Horizontal
D4F-102-1R
D4F-202-1R
D4F-302-1R
D4F-402-1R
Vertical
D4F-102-1D
D4F-202-1D
D4F-302-1D
D4F-402-1D
Horizontal
D4F-102-3R
D4F-202-3R
D4F-302-3R
D4F-402-3R
Vertical
D4F-102-3D
D4F-202-3D
D4F-302-3D
D4F-402-3D
Horizontal
D4F-102-5R
D4F-202-5R
D4F-302-5R
D4F-402-5R
Vertical
D4F-102-5D
D4F-202-5D
D4F-302-5D
D4F-402-5D
Direct
opening
1
D4F
Specifications
Standards and EC Directives
Certified Standard Ratings
Conforms to the following EC Directives:
TÜV (EN60947-5-1), CCC (GB14048.5)
•
•
•
•
•
•
Machinery Directive
Low Voltage Directive
EN50047
EN60204-1
EN ISO 14119
GS-ET-15
Item
TÜV SÜD
UL *2
CQC (CCC) *3
AC-15
DC-13
0.75 A
0.27 A
Rated operating voltage (Ue) 240 V
250 V
Note: Use a 10 A fuse type gI or gG that conforms to IEC60269 as a
short-circuit protection device.
Certified Standards
Certification body
Utilization category
Rated operating current (Ie)
UL/CSA (UL508, CSA C22.2 No. 14)
Standards
File No.
EN60947-5-1
(certified direct opening)
*1
UL508
CSA C22.2 No.14
E76675
GB14048.5
20030103050
64266
*1. Contact your OMRON sales representative.
*2. Certification has been obtained for CSA C22.2 No. 14 under UL.
*3. Ask your OMRON representative for information on certified
models.
C300
Rated
voltage
120 VAC
240 VAC
Carry current
2.5 A
Current (A)
Make
15
7.5
Break
1.5
0.75
Volt-amperes (VA)
Make
1,800
Break
180
Q300
Rated
voltage
125 VDC
250 VDC
Carry current
2.5 A
Current (A)
Make
0.55
0.27
Break
0.55
0.27
Volt-amperes (VA)
Make
69
Break
69
2
D4F
Characteristics
Degree of protection *1
Durability *2
IP67 (EN60947-5-1)
Mechanical
10,000,000 times min.
Electrical
1,000,000 times min. (4 mA resistive load at 24 VDC, 4 circuits)
150,000 times min. (1 A resistive load at 125 VAC, 2 circuits/4 mA resistive load at 24 VDC, 2 circuits) *3
Operating speed
Operating frequency
1 mm/s to 0.5 m/s
Mechanical
120 operations/minute
Electrical
30 operations/minute
Contact resistance *5
300 mΩ max. (with 1 m cable), 500 mΩ max. (with 3 m cable), 700 mΩ max. (with 5 m cable)
Minimum applicable load *4
4 mA resistive load at 24 VDC, 4 circuits (N-level reference value)
Rated insulation voltage (Ui)
250 V
Rated frequency
50/60 Hz
Protection against electric shock
Class I (with a ground wire)
Pollution degree (operating environment)
3 (EN60947-5-1)
Impulse withstand
voltage (EN60947-5-1)
Between terminals
of same polarity
2.5 kV
Between terminals
of different polarity
4 kV
Between each
4 kV
terminal and ground
100 MΩ min. (at 500 VDC) between terminals of the same polarities, between terminals of different polarities,
between current-carrying metal parts and grounds, and between each terminal and non-current carrying metal parts
Insulation resistance
2 × 2 mm min.
Contact gap
Vibration resistance
Shock resistance
Malfunction
10 to 55 Hz, 0.75 mm single amplitude
Destruction
1,000 m/s2 min.
Malfunction
300 m/s2 min.
Conditional short-circuit current
100 A (EN60947-5-1)
Conventional free air thermal current (Ith)
2.5 A (EN60947-5-1)
Ambient operating temperature
−30 to 70°C (with no icing)
Ambient operating humidity
95% max.
Cable
UL2464 No. 22 AWG, finishing O.D.: 8.3 mm
Weight
Approx. 190 g (D4F-102-1R, with 1 m cable)
Approx. 220 g (D4F-120-1R, with 1 m cable)
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 for more detailed information on other operating environments.
*3. Do not apply 1 A at 125 VAC to more than two circuits.
*4. The value will vary depending on factors such as the switching frequency, the ambient environment, and the reliability level.
Be sure to confirm correct operation with the actual load before application.
*5. The contact resistance was measured with 0.1 A at 5 to 8 VDC with a fall-of-potential method.
3
D4F
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 Opening Mechanism
1NC/1NO Contact (slow-action)
Fixed contact (NC)
Contact spring
Movable contact
Fixed contact (NO)
Return spring
Plunger
Conforms to EN60947-5-1 Direct Opening
.
(Only the NC contacts have a direct opening function.)
When contact welding occurs, the NC contacts are separated from
each other by pushing in the plunger.
Contact Form
Model
D4F-1@-@@
D4F-2@-@@
Contact
1NC/1NO
(slow-action)
2NC
(slow-action)
Contact form
Operating pattern
Zb
11
12
33
34
Zb
11
12
21
22
Zb
D4F-3@-@@
2NC/2NO
(slow-action)
11
12
21
22
33
34
43
44
Zb
D4F-4@-@@
4NC
(slow-action)
11
12
21
22
31
32
41
42
11-12
33-34
Remarks
ON
The terminals 11-12 and 33-34 can be
used as unlike poles.
Stroke
11-12
21-22
Only NC contact 11-12 has a certified
direct opening mechanism.
ON
NC contacts 11-12 and 21-22 have a
certified direct opening mechanism.
The terminals 11-12 and 21-22 can be
used as unlike poles.
Stroke
NC contacts 11-12 and 21-22 have a
certified direct opening mechanism.
11-12
21-22
33-34
43-44
ON
Stroke
The terminals 11-12, 21-22, 33-34 and
43-44 can be used as unlike poles.
NC contacts 11-12, 21-22, 31-32 and 4142 have a certified direct opening
mechanism.
11-12
21-22
31-32
41-42
ON
Stroke
The terminals 11-12, 21-22, 31-32 and
41-42 can be used as unlike poles.
Note: The terminal numbers are according to EN 50013 and the contact symbols are according to EN 60947-5-1.
4
D4F
Dimensions and Operating Characteristics
Roller lever (Metal lever, resin roller)
D4F-@20-@R
Roller plunger (Metal roller)
D4F-@02-@R
(30.8)
25.5
17.5-dia. × 6.8,
resin roller
(Unit: mm)
9
Pretravel
12-dia. × 4.4,
Sintered stainless steel roller
24.7R
Two, 4.4-dia.
8-dia. countersinking,
depth 4
18.5
30
27.5
Operating
position
8.8
(14.4-dia.)
(35)
20±0.1
(42.7)
(11.4)
Roller lever (Metal lever, resin roller)
D4F-@20-@D
30
(11.4)
18
UL2464
No. 22 AWG,
finishing O.D.: 8.3 mm
Roller plunger (Metal roller)
D4F-@02-@D
(30.8)
25.5
17.5-dia. × 6.8,
resin roller
9
Pretravel
24.7R
30
Two, 4.4-dia.
8-dia. countersinking,
depth 4
18.5
(14.4-dia.)
(35)
20±0.1
(42.7)
18
UL2464
No. 22 AWG,
finishing O.D.: 8.3 mm
30
Two, 4.4-dia.
8-dia. countersinking,
depth 4
27.5
12-dia. × 4.4,
Sintered stainless steel roller
Operating
position
8.8
Two, 4.4-dia.
8-dia. countersinking,
depth 4
20±0.1
20±0.1
(42.7)
(42.7)
(16.7)
(16.7)
(7.9)
(7.9)
UL2464
No. 22 AWG,
finishing O.D.: 8.3 mm
UL2464
No. 22 AWG,
finishing O.D.: 8.3 mm
(17.6)
30
18
(17.6)
18
30
2
2
Note: Each dimension has a tolerance of 0.4 mm unless otherwise specified.
Slow-action (1NC/1NO), (2NC), (2NC/2NO), and (4NC)
Model
D4F-@20-@R
D4F-@20-@D
Operating Characteristics
D4F-@02-@R
D4F-@02-@D
Operating force
OF max. *1
5N
Release force
RF min. *2
0.5 N
Pretravel
PT1 (11-12 and 21-22) 6±3° (NC)
PT1 (31-32 and 41-42) 9±3° (NC)
PT2 *3
(12°) (NO)
1 mm max. (NC)
1.3 mm max. (NC)
(1.2 mm) (NO)
Overtravel
OT min.
3.2 mm
Operating position
OP (11-12 and 21-22) --OP (31-32 and 41-42) ---
29.4±1 mm
29±1 mm
Total travel
TT *3
(4.5 mm)
40°
(55°)
12 N
1.5 N
Direct opening travel DOT min. *4
18°
1.8 mm
Direct opening force DOF min.
20 N
20 N
Note: Variation occurs in the simultaneity of contact opening/closing operations of 2NC, 2NC/2NO, and 4NC contacts.
Check contact operation.
*1. The OF value is the maximum load that opens an NC contact (11-12, 21-22, 31-32, 41-42).
*2. The RF value is the minimum load that closes an NC contact (11-12, 21-22, 31-32, 41-42).
*3. The PT2 and TT values are reference values.
*4. The D4F is used in accordance with EN81 and EN115 at a minimum DOT of 30° and 2.8 mm.
5
D4F
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.
Precautions
for Correct
Use
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 for Correct Use
The Switch contacts can be used with either standard loads or
microloads. Once the contacts have been used to switch a load,
however, they cannot be used to switch smaller loads. The contact
surfaces will become rough once they have been used and contact
reliability for smaller loads may be reduced.
Appropriate Tightening Torque
Be sure to tighten each screw of the D4F properly, otherwise the D4F
may soon malfunction
.
No.
Type
Appropriate tightening torque
1
Lever mounting screw (M5) 2.4 to 2.8 N·m
2
Body mounting screw (M4) 1.18 to 1.37 N·m
Handling of Cables
• Cables cannot be flexed repeatedly.
• The cable is fixed with sealing materials on the bottom of the
switch. When excessive force may be imposed on the cable, fasten
the cable with a fixing unit at a distance of 50 mm from the bottom
of the switch as shown.
• Do not pull or press the cable at an excessive force (50 N max.).
• When bending the cable, secure the cable with more than 45 mm
bending radius so as not to cause damage to the insulator or
sheath of the cable. Doing so may result in current leakage or
burning.
1
2
Mounting
Use two M4 screws and washers to mount the D4F securely. The D4F
can be mounted more securely with proper tightening torque.
Mounting Holes (Unit: mm)
50 mm
Bending radius:
45 mm min.
Two, 4.2-dia. or M4 screw hole
20±0.1
Fixing unit
• When wiring, be sure to prevent penetration of a liquid such as
water or oil through the cable end.
Operating Environment
• Do not use the Switch submersed in oil or water or in locations
continuously subject to splashes of oil or water. Doing so may
result in oil or water entering the Switch. (The IP67 degree of
protection of the Switch specifies the amount of water penetration
after the Switch is submerged in water for a certain period of time.)
Changing the Lever Angle
• Unfasten the screw that holds the lever to set the position of the
lever at any angle through 360° (in steps of 9°).
• After unfastening the screws that hold the lever, mount the lever
the other way (normal side or reverse side). Set an angle of the
lever to complete adjustment within a range in which the lever does
not touch the switch body.
6
D4F
Wiring
Operating
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
6 5
3
4
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, push the dog and cam until
the lance point comes within the range of the convex part that is the
correct setting position.
Terminal Numbers
• Identify terminal numbers based on the color (with or without white
lines) of the insulation on the wire.
• The safety and auxiliary contacts of D4F models of four-terminal
contact construction and those of two-terminal contact
construction are described below.
• The safety contacts are direct-opening NC contacts (11-12 and 2122); they are used for safety circuits, and each of them is indicated
with the appropriate mark
.
• Auxiliary contacts are used to check (to monitor) the operating
state of the switch, which are equivalent to NO contacts (33-34 and
43-44) or NC contacts (31-32 and 41-42).
• The NC contacts 31-32 and 41-42 of auxiliary contacts (orange or
pink) can be used as safety contacts.
Convex part
Lance point
Proper range
Others
• Actuating the switch from an angle other than 90 degrees to the
switch face may deform or damage the actuator, or deform or
damage the rotary spindle, so make sure that the dog is straight.
Dog
Incorrect
Dog
Correct
Zb
Safety contact Blue 11
12 Blue/white
Auxiliary contact Orange 33
34 Orange/white
Green/yellow ground
Dog
Incorrect
Dog
Correct
Zb
Safety contact Blue 11
12 Blue/white
Auxiliary contact Brown 21
22 Brown/white
Green/yellow ground
Zb
Safety contact Blue 11
12 Blue/white
Safety contact Brown 21
22 Brown/white
Auxiliary contact Orange 33
34 Orange/white
Auxiliary contact Pink 43
44 Pink/white
• Do not remove the head. Otherwise, a failure may occur.
• To avoid telegraphing, take the following precautions.
1. Modify the rear end of the dog to an angle of 15° to 30° as
shown below or to a secondary-degree curve.
θ
θ
θ ≥ 30°
Green/yellow ground
15°≤ θ ≤ 30°
2. Modify the circuit so as not to detect the wrong operating
signals.
Zb
Safety contact Blue 11
Safety contact Brown 21
Auxiliary contact Orange 31
Auxiliary contact Pink 41
12 Blue/white
22 Brown/white
32 Orange/white
42 Pink/white
Green/yellow ground
Note: Safety Contacts:
The safety contacts are direct opening contacts certified by EN
and each of them is indicated with the mark
.
• Cut the dummy core insulator and all unused wires at the end of
the external insulation sheath when wiring the cable.
7
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 IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2015.8
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2015 All Right Reserved.