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Allen-Bradley 1442-DR-5850 1442 Series Probe System Driver
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- Part Number: 1442-DR-5850
- Brand: Allen-Bradley
- Type: Proximity Sensors
- Barcode: USA
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Proximity Sensors
Product Description
Configured for displacement and shaft position monitoring in Allen-Bradley networks, the Allen-Bradley 1442-DR-5850 (1442-DR-5850 Proximity Probe Driver) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1442-DR-5850 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | Approximately 200 g (7.0 oz) |
| Dimensions | Standard 1442 Driver Chassis Footprint |
| Operating Temp | -20 to 65 deg C |
| Power Consumption | -15 mA Max (with 10 kohm load) |
| Target Calibration Material | AISI 4140 (JIS SCM440) Steel Flat Surface |
| Power Supply Voltage | -24 VDC |
| Maximum Output Voltage | -23 VDC |
| Fault Output Voltage | -0.6 VDC (Probe/Sensor OPEN or SHORT) |
| Output Noise | 20 mV peak-to-peak + power supply noise |
| Cable Diameter | 2.7 mm or 3.6 mm (0.11 in. or 0.14 in.) |
| Connector Diameter | 7.1 mm (0.28 in.) / Armored: 5.8 mm (0.23 in.) |
| System Cable Length | 5 m or 9 m (16.40 ft or 29.53 ft) Nominal |
| Driver Insulation Resistance | >= 100 Mohm @ 500 VDC (Terminals to Plate) |
| Isolation Voltage | 50 V Continuous (Tested at 500 VAC for 60 s) |
| Driver Wire Size | 0.75...1.25 mm2 (18...16 AWG) Shielded Copper |
| Terminal Block Type | Spring Lock Terminal |
Backplane Bus Communication Velocity & Eddy-Current Probe Scaling
The 1442-DR-5850 probe driver utilizes precise eddy-current probe scaling calibrated against AISI 4140 steel target surfaces to maintain high-accuracy mechanical displacement tracking. The system processes gap voltage validation across continuous dynamic signals, providing immediate fault detection by driving output levels to -0.6 VDC during probe open or short circuit conditions. High I/O density scaling and cross-talk suppression are sustained across 5 m or 9 m cable runs, maintaining low-noise voltage transmission back to monitoring hardware without signal distortion.
Frequently Asked Questions
Q: What output voltage does the 1442-DR-5850 driver produce during a probe fault condition?
A: The driver outputs an abnormal fault voltage of -0.6 VDC whenever an open or short circuit condition is detected on the connected probe sensor.
Q: What wiring type and gauge are specified for connecting the 1442-DR-5850 driver terminals?
A: Connections require 0.75 to 1.25 mm2 (18 to 16 AWG) shielded stranded-copper wire rated at 90 deg C or higher, fitted to the onboard spring lock terminal block.
Field Installation Guidelines
- Mount the 1442-DR-5850 driver unit securely onto a clean metal backplate, ensuring continuous low-impedance ground contact across the baseplate.
- Connect the -24 VDC primary power feed and field signal cabling using 18 to 16 AWG shielded stranded-copper wire, securing conductors via the spring lock terminals.
- Route probe integral cables and extension leads separately from high-voltage AC motor lines to suppress electro-magnetic cross-talk and ambient field noise.
- Verify total system cable length matches standard 5 m or 9 m nominal tuning specs to ensure eddy-current scaling and gap voltage calibration remain accurate.
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