Safety Door Interlock Sensor - Industrial Component

Product Specifications

Technical details and manufacturing context for Sensor

Definition

Within a Safety Door Interlock system, the sensor is a critical component that monitors the open/closed status of protective doors or guards on machinery. It detects when doors are properly secured and sends electrical signals to the control system to enable or disable machine operation based on safety requirements. The sensor typically uses magnetic, inductive, capacitive, or mechanical sensing technologies to detect the presence or position of the door. When the door is closed, the sensor detects this state and sends a signal to the safety controller, allowing machine operation. If the door opens during operation, the sensor detects the change and sends a signal to immediately stop the machine. This sensor is designed for industrial environments, with a stainless steel or plastic housing and electronic components. Key parameters include a rated voltage of 24 V DC (±10%), current consumption of 10–30 mA, PNP output (open collector, normally open), switching frequency of 100–1000 Hz, sensing distance of 5–15 mm (flush mount, per IEC 60947-5-2), operating temperature of -25 to 70 °C, protection class IP67 (per IEC 60529), housing material PBT (glass-fiber reinforced), connection type M12 (4-pin connector), and weight of 50–100 g (without cable). These values are reference ranges for standard industrial supply and must be verified for the specific model and application. The sensor is a component, not a standalone safety device; it must be integrated into a complete safety interlock system. Always consult the legal manufacturer or supplier to confirm model-specific specifications and compliance with applicable standards.

Working Principle

The sensor operates by detecting the position or status of a safety door using magnetic, inductive, capacitive, or mechanical sensing technologies. When the door is closed, the sensor detects the presence or position and sends an electrical signal to the safety controller, enabling machine operation. If the door opens during operation, the sensor detects the change and sends a signal to immediately stop the machine. The output is a PNP open collector, normally open, which switches based on the sensing state. The sensing distance is typically 5–15 mm for flush mounting, and the switching frequency ranges from 100 to 1000 Hz. The sensor is powered at 24 V DC and consumes 10–30 mA. It is designed for industrial environments with an IP67 protection class and operates within -25 to 70 °C. The actual sensing technology and performance must be verified for the specific model.

Common Materials

Stainless Steel Housing, Plastic Enclosure, Electronic Components

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Voltage	24 ±10% V DC	Standard industrial supply
Current Consumption	10–30 mA	At rated voltage
Output Type	PNP	Open collector, normally open
Switching Frequency	100–1000 Hz	Depends on sensing distance
Sensing Distance	5–15 mm	Flush mountIEC 60947-5-2
Operating Temperature	-25–70 °C	Extended range available
Protection Class	IP67	Dust-tight, temporary immersionIEC 60529
Housing Material	PBT	Glass-fiber reinforced
Connection Type	M12	4-pin connector
Weight	50–100 g	Without cable

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Sensing Element Part
Detects the physical presence or position of the door

Material: Magnetic/Inductive/Capacitive sensing material
Housing Part
Protects internal components from environmental factors

Material: Stainless steel or industrial plastic
Electrical Connector Part
Provides interface for power and signal transmission

Material: Plastic with metal contacts
Mounting Bracket Part
Secures the sensor to the machine frame

Material: Steel or aluminum

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Safety Door Interlock

View system integration details

Manufacturers of Sensor

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Frequently Asked Questions

What is the typical sensing distance of this sensor?

The sensing distance is typically 5–15 mm for flush mounting, as listed in the reference parameters. However, the actual sensing distance depends on the specific model and application, so you must verify with the manufacturer or supplier.

What output type does this sensor have?

The sensor has a PNP output, which is an open collector, normally open configuration. This means it provides a positive signal when the door is closed. Confirm the output type for your specific model.

What is the protection class of this sensor?

The protection class is IP67, indicating dust-tight and temporary immersion protection, per IEC 60529. This is suitable for industrial environments, but verify the rating for your specific model.

Can this sensor be used in high-temperature environments?

The operating temperature range is -25 to 70 °C. For temperatures outside this range, consult the manufacturer for suitable alternatives or extended range options.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 1 bar (atmospheric)
other spec:	IP67 ingress protection, 10-30V DC supply voltage, 100mA max current
temperature:	-20°C to +85°C

Sensor

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