1NC/1NO Safety Contact Arrangement
The OMRON D4NS-2AF provides one normally closed and one normally open contact with slow-action switching for monitoring the position of machine safety doors.
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Omron
OMRON D4NS-2AF Safety Door Switch Industrial Supplier
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$25.60
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | OMRON |
| Model Number | D4NS-2AF |
| Product Category | Safety Door Interlock Switch |
| Product Series | D4NS |
| Switch Type | Mechanical Safety Door Switch |
| Actuation Method | Separate-Key Operated |
| Contact Configuration | 1 Normally Closed + 1 Normally Open (1NC/1NO) |
| Contact Action | Slow-Action, Non-Make-Before-Break |
| Rated Thermal Current | 10 A |
| Number of Conduit Entries | 1 |
| Conduit Size | G1/2 |
| Electrical Connection | Terminal Block |
| Operating Head Orientation | Adjustable, Four Mounting Directions |
| Housing Material | Resin |
| Operating Head Material | Resin |
| Guard Locking Function | Not Provided |
| Operation Indicator | Not Provided |
| Protection Rating | IP67, Subject to Installation Conditions |
| Operating Temperature | -30 to +70°C |
| Dimensions | 96 × 30 × 31 mm; Refer to Manufacturer Drawing for Orientation |
| Pre-Wired Cable | Not Included |
| Operation Key | Ordered Separately |
| Compatible Operation Keys | D4DS-K1, D4DS-K2, D4DS-K3, D4DS-K5 |
| Direct Opening Contact | NC Contact, According to D4NS Series Specifications |
| Manufacturer Reference | OMRON D4NS-2AF Product Specifications |
Key Features
G1/2 Single-Conduit Connection
The switch is equipped with a single G1/2 conduit entry and terminal-block wiring, supporting electrical installation in suitably designed machinery safety circuits.
Separate-Key Mechanical Operation
The device changes contact state when a compatible operation key is inserted or withdrawn. The operation key is selected separately according to the door arrangement.
Adjustable Operating Head
The operating head supports four mounting directions, allowing the switch orientation to be adapted to compatible machine door designs and actuator installation positions.
IP67 Environmental Protection
The resin housing is specified with IP67 protection when installed according to OMRON instructions. Protect the operation-key opening from contamination and mechanical damage.
Mechanical Guard Position Monitoring
The D4NS-2AF is suitable for appropriately designed safety interlock circuits using compatible safety controllers or relays. It does not provide a solenoid locking function.
Applications
- Industrial machine safety door monitoring
- Mechanical guard interlock systems
- Packaging machine access door detection
- Automated assembly machinery guarding
- Production line protective enclosure monitoring
- Robot cell access door interlocking
- Industrial safety relay input circuits
- Existing D4NS safety switch maintenance and replacement
Purchase Information
We support online purchase of the OMRON D4NS-2AF Safety Door Interlock Switch. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the OMRON D4NS-2AF?
It is a D4NS series mechanical safety door interlock switch with one normally closed contact, one normally open contact and a single G1/2 conduit entry.
What is the contact configuration?
The D4NS-2AF has a 1NC/1NO slow-action contact configuration.
What conduit size does this model use?
It uses one G1/2 conduit entry. Verify the conduit fitting and cable-sealing arrangement before installation.
Does D4NS-2AF include an operation key?
The operation key is ordered separately. OMRON lists D4DS-K1, D4DS-K2, D4DS-K3 and D4DS-K5 as compatible operation-key accessories.
Does the switch provide a guard locking function?
No. The D4NS-2AF monitors guard position but does not lock the safety door. Applications requiring guard locking need an appropriately specified device.
Does it need a separate 24 VDC supply?
The D4NS-2AF is a mechanical contact switch and does not require an independent electronic supply to operate its contacts. The connected control circuit must comply with the electrical contact ratings.
What is the rated current?
OMRON identifies the D4NS-2AF as a 10 A safety interlock switch. The permissible switching current depends on the load type and operating voltage.
Can the operating head be repositioned?
Yes. The operation head has an adjustable direction, with four mounting orientations supported according to OMRON documentation.
What is the protection rating?
The manufacturer specifies IP67 protection, subject to proper installation and environmental conditions.
What is the operating temperature range?
The specified ambient operating temperature range is -30 to +70°C.
Can D4NS-2AF replace D4NS-4AF?
Do not assume direct interchangeability. D4NS-2AF uses G1/2 conduit threads, whereas D4NS-4AF uses M20 conduit threads. Check conduit fittings, mounting, contacts and the machine safety design before selecting a replacement.
What should be checked before ordering?
Confirm model D4NS-2AF, 1NC/1NO contact configuration, G1/2 conduit entry, required operation key, installation orientation, electrical contact ratings, environmental conditions and the validated machine safety circuit.
Need help confirming a model?
Send us your part number and technical requirements.
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