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Allen Bradley 871A-TS4-DM1 Inductive Proximity Sensor

Allen Bradley 871A-TS4-DM1 Inductive Proximity Sensor.

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ManufacturerAllen Bradley

Part number871A-TS4-DM1

Sensing Range 4mm

Output Type PNP Normally Closed (NC)

Voltage 10-30V DC

Connector M12

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Non-contact detection 4mm sensing range PNP Normally Closed (NC) output 10-30V DC operation M12 connector Fail-safe functionality

Product description

The Allen Bradley 871A-TS4-DM1 is an inductive proximity sensor featuring a PNP output and a normally closed (NC) configuration. It provides a 4mm sensing range and utilizes an M12 connector for easy installation, operating within a 10-30V DC voltage range.

This sensor is ideal for safety-critical applications or systems requiring a fail-safe design, such as machine guarding and emergency stop circuits. Its PNP NC output ensures that the circuit remains open until a target is detected, making it suitable for critical positioning tasks in industrial automation.

Stanlo Automation, a veteran-owned provider of surplus industrial parts, offers the 871A-TS4-DM1. We pride ourselves on delivering quality components quickly to minimize your operational downtime.

Technical specifications

Sensing Range	4mm
Output Type	PNP Normally Closed (NC)
Voltage	10-30V DC
Connector	M12
Body Style	Cylindrical

Common applications

Machine guarding

Safety interlocks

Emergency stop circuits

Critical positioning

Automation safety

Industrial controls

Compatible systems

Safety Relays PLCs with PNP DC inputs DC Control Circuits Automation Safety Systems

Also known as

871A-TS4-DM1 sensor Allen Bradley 871A PNP NC 4mm 871A series M12 NC AB 871A-TS4-DM1

Replaces / compatible with

This PNP NC proximity sensor is suitable for replacing Allen Bradley or equivalent sensors that require a normally closed output for safety or specific system logic.

Technical note

Expert tip

The NC configuration is critical for fail-safe operations; always verify that your control system is designed to interpret the NC signal correctly in safety-related contexts.

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Frequently asked questions

Why choose a normally closed (NC) output for safety applications?

A normally closed (NC) output on the 871A-TS4-DM1 is beneficial for safety as it ensures that the control circuit remains complete under normal conditions. Any interruption, such as a broken wire or sensor failure, will break the circuit, triggering a safe state.