Overview
The Allen-Bradley 42GTP-9002-QD is a photoelectric sensor from Rockwell Automation’s Series 9000 lineup, designed for timing and on/off control in industrial automation applications. This diffuse sensor operates across a wide supply voltage range of 70–264V AC/DC, making it suitable for both AC and DC-powered systems. The sensor detects objects using diffuse sensing—reflected light from the target object—with a standard 5-foot (1.52 meter) sensing range. The SPDT electromagnetic relay output provides simple on/off switching for PLC inputs, motor starters, and control circuits.
Key Features
- Timing functionality with configurable on-delay and off-delay via DIP switches and potentiometers
- Diffuse (proximity) sensing mode for general-purpose object detection without reflective targets
- SPDT electromagnetic relay output for simple integration with 24V AC/DC logic
- 70–264V AC/DC supply voltage for use in both AC and DC automation circuits
- Mini quick-disconnect (QD) connector for fast installation and replacement
- Compact form factor suitable for tight mounting spaces
Technical Specifications
Electrical:
- Supply Voltage: 70–264V AC/DC
- Output Type: SPDT electromagnetic relay
- Connector: 5-pin mini quick-disconnect (QD)
- Sensing Range: 5 ft (1.52 m)
Operational:
- Sensing Mode: Standard diffuse (reflected light)
- Function: Timing (on-delay and off-delay configurable)
- Configuration: DIP switches (S1–S4) and rotary potentiometers for timing adjustment
- Light Source: Visible red LED
Typical Applications
- Machine tool automation and workpiece detection
- Assembly line timing control and part flow management
- Conveyor belt object counting and presence verification
- Industrial process monitoring and light-level sensing
- Backup systems where quick-disconnect connectors reduce downtime
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs with 24V input modules
- Standard 24V AC/DC industrial control circuits
- Motor starters and solenoid valve circuits rated for relay switching
Replaces / Drop-In Replacement For
- Verify specific replacement models with your system integrator before ordering. The 42GTP-9002-QD is part of Rockwell Automation’s Series 9000 photoelectric sensor family.
Works With
- CompactLogix, ControlLogix, and SLC 500 processors with standard relay input cards
- Ethernet/IP networks for indirect process monitoring (sensor itself is non-networked)
- SPDT relay-based logic and control systems
