Overview
The Allen-Bradley 42GTU-9002-QD is a Series 9000 photoelectric sensor featuring retroflective sensing technology with built-in time delay functionality. This sensor is designed for industrial automation and control applications requiring synchronized detection and timing control. The 42GTU-9002-QD operates on 70–264V AC/DC and delivers SPDT electromagnetic relay output through a mini quick-disconnect connector, making it suitable for both AC and DC circuit integration.
Key Features
- Retroflective sensing with 30 ft (9.14 m) detection range using visible red 660 nm light
- Integral time delay control via DIP switches (S1–S4) and rotary adjustment knobs for flexible timing configuration
- Wide voltage input: 70–264V AC/DC with 2 amp rated output at 132 VAC and 1 amp at 264 VAC
- SPDT electromagnetic relay output for reliable switching in control circuits
- Mini quick-disconnect (QD) connector for fast installation and field serviceability
- Nonretriggerable timing for predictable on-delay and one-shot pulse generation
Technical Specifications
- Model: 42GTU-9002-QD
- Series: 9000 Photoswitch
- Sensing Method: Retroflective
- Light Source: Visible red, 660 nm wavelength
- Sensing Distance: 9.14 m (30 ft)
- Input Voltage: 70–264V AC/DC
- Output: SPDT electromagnetic relay
- Rated Current: 2 A @ 132 VAC; 1 A @ 264 VAC; 1 A @ 150 VDC
- Connector: 5-pin mini quick-disconnect (AC/DC)
- Timing Configuration: DIP switches and rotary knobs for on-delay and one-shot timing
- Time Delay Range: Short (0–1.5 s) or long range selectable
- UPC: 662073953173
Typical Applications
- Conveyor belt tracking and object detection with timing-synchronized reactions
- Machine control circuits requiring on-delay or one-shot pulse timing
- Industrial automation systems with retroflective target sensing (reflectors, foil, or retroreflective tape)
- Proximity sensing in assembly lines where fixed installation of transmitter and receiver is impractical
- Quality control and inspection systems with timed gate or strobe functions
Compatibility & Replacements
Compatible With
- Industrial control systems utilizing 70–264V AC/DC power supplies
- PLC and relay logic circuits requiring SPDT relay inputs
- Automation panels and control cabinets with standard 5-pin connector receptacles
- Rockwell Automation CompactLogix, ControlLogix, and SLC 500 platforms (via external relay)
Replaces / Drop-In Replacement For
Verify specific model interchangeability with your system integrator before ordering. The 42GTU-9002-QD is a direct replacement only when the original equipment specifies this exact model number.
Works With
- Retroflective targets and reflectors (prisms, corner cubes, reflective tape)
- Standard industrial relay contact wiring and control circuits
- Both AC and DC powered control systems via SPDT relay switching
- Field-adjustable timing: no reprogramming or external timers required
