Overview
The Allen-Bradley 42SRP-6002 photoswitch is a compact photoelectric sensor designed for diffuse-mode light detection in industrial automation. Part of Rockwell Automation’s Series 6000 photoswitch line, it delivers reliable infrared-based sensing at 880nm wavelength with flexible output configuration (NPN/PNP selectable).
Key Features
- Standard Diffuse Mode: No background suppression required; object detection via direct reflection.
- 10–30V DC Operating Range: Compatible with most industrial DC power supplies.
- 880nm Infrared LED: Stable sensing in varying ambient light conditions.
- 1ms Response Time: Fast reaction for high-speed conveyor and motion-control applications.
- Compact Housing: Noryl material construction; NEMA 3, 4X, 6, 12, 13 rated enclosure.
- 200mA Output Capacity: Sufficient drive current for standard PLCs and relay modules.
- NPN/PNP Capable: Supports both sink and source output configurations.
Technical Specifications
- Model: 42SRP-6002
- Sensing Mode: Standard Diffuse
- Light Source: Infrared 880nm LED
- Operating Voltage: 10–30V DC
- Maximum Sensing Distance: 760mm (30in)
- Response Time: 1 Millisecond
- Output Type: NPN and PNP selectable
- Output Current: 200mA maximum
- Connection: 3-meter (9.8ft) cable or 4-pin Micro Quick Disconnect (-QD variant)
- Operating Temperature: −40 to +56°C
- Housing Material: Noryl
- Enclosure Rating: NEMA 3, 4X, 6, 12, 13
- Certifications: UL, CUL, CE, CSA, CCC, KC
- Status: Discontinued by manufacturer (Feb 28, 2023)
Typical Applications
- Conveyor Belt Detection: Object presence/absence on production lines.
- Part Sorting: Binary detection of parts in motion-control systems.
- Fill-Level Sensing: Container or hopper level monitoring in packaging equipment.
- Alignment Verification: Diffuse reflection-based position confirmation on assembly machines.
- Packaging & Labeling: Mark detection and product registration on automated lines.
- Discrete Automation: PLC input modules and relay-based control circuits.
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, MicroLogix PLC families
- Rockwell Automation Studio 5000 / RSLogix 5000 environments
- Standard industrial DC power supplies (10–30V range)
- 24V DC relay modules and contactor circuits
- EtherNet/IP networks via compatible I/O modules
- PROFIBUS and CANopen gateway integrations
Replaces / Drop-In Replacement For
- Earlier Allen-Bradley Photoswitch Series 5000 diffuse models (verify mounting and output type)
- 42SRL-6006-QD (when QD connection is acceptable in your application)
- Verify compatibility with your system integrator before ordering, as sensor output type and connector style must match existing wiring.
Works With
- Rockwell Automation Studio 5000 (PLC programming and I/O configuration)
- Allen-Bradley 1756 CompactLogix analog/digital input modules
- Standard 24V DC relay logic circuits
- Third-party SCADA and HMI platforms via standard digital inputs
- Discrete I/O terminal blocks and marshalling panels
