Allen-Bradley 1442-DR-5850 Eddy Current Driver
Configured for non-contact shaft vibration and displacement monitoring in Allen-Bradley XM-120 series machinery protection networks, the Allen-Bradley 1442-DR-5850 (1442-DR-5850 Eddy Current Driver) provides direct physical/electrical execution. It modulates high-frequency RF excitation signals across 1442 series proximity probes, converting target gap distance changes into proportional negative DC voltage outputs for rotor dynamic evaluation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1442-DR-5850 |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | Driver Mass: Approx. 200 g (7.0 oz) |
| Dimensions | Compact DIN-Rail / Mounting Plate Driver Housing |
| Operating Temp | Standard Industrial Temperature Range |
| Power Consumption | -15 mA maximum current draw (with 10 kohm load) |
| Power Supply | -24 VDC nominal |
| Calibration Target | AISI 4140 (JIS SCM440) steel flat surface |
| Maximum Output Voltage | -23 VDC |
| Abnormal Output Voltage | -0.6 VDC (Indicates probe or sensor OPEN / SHORT condition) |
| Output Noise | 20 mV peak-to-peak + power supply noise |
| Driver Isolation | 50 V continuous (Basic Insulation Type, terminals to mounting plate) |
| Insulation Resistance | >= 100 Mohm @ 500 VDC between terminals and mounting plate |
| System Cable Length | 5 m or 9 m (16.40 ft or 29.53 ft) nominal |
| Driver Wire Size | 0.75 to 1.25 mm2 (18 to 16 AWG) shielded stranded-copper wire |
Backplane Bus Communication Velocity and Rotor Dynamics
Interfacing seamlessly with Allen-Bradley machinery monitoring platforms, the driver conditions raw eddy-current probe signals to track critical rotor dynamics and shaft displacement. Gap voltage validation (-10 VDC targets) allows technicians to verify correct mechanical probe standoff before system commissioning. Internal cross-talk suppression and high-frequency noise filtering prevent signal degradation, ensuring backplane bus communication velocity and dynamic data transfer remain stable across 1442 series protective monitoring modules.
Frequently Asked Questions
Q: How does the 1442-DR-5850 indicate a damaged or disconnected eddy-current probe?
A: The driver shifts its output signal to an abnormal voltage level of -0.6 VDC whenever an open circuit or short circuit condition is detected in the connected probe or extension cable.
Q: What are the insulation testing limits for the driver terminals to the mounting plate?
A: The driver provides basic insulation rated at 50 V continuous, type tested at 500 VAC for 60 seconds, with an insulation resistance of >= 100 Mohm at 500 VDC between terminals and the mounting plate.
Field Installation Guidelines
- Mount the 1442-DR-5850 driver securely onto a grounded DIN rail or subpanel mounting plate inside the protection cabinet.
- Connect field power wiring to the spring lock terminal block using 0.75 to 1.25 mm2 (18 to 16 AWG) shielded stranded-copper wire rated at 90 deg C or higher.
- Attach the 5 m or 9 m nominal proximity probe extension cable to the driver connector, ensuring the cable shield is grounded according to single-point grounding rules.
- Set mechanical probe tip clearance to achieve a baseline gap voltage validation target (typically -10 VDC) using AISI 4140 steel as the calibration reference surface.
- Verify that all signal wiring is routed separately from high-voltage motor feeds and variable frequency drive output cables to prevent electromagnetic noise coupling.
Allen-Bradley 1442-DR-5850 Eddy Current Driver
Allen-Bradley 1442-DR-5850 Eddy Current Driver
Configured for non-contact shaft vibration and displacement monitoring in Allen-Bradley XM-120 series machinery protection networks, the Allen-Bradley 1442-DR-5850 (1442-DR-5850 Eddy Current Driver) provides direct physical/electrical execution. It modulates high-frequency RF excitation signals across 1442 series proximity probes, converting target gap distance changes into proportional negative DC voltage outputs for rotor dynamic evaluation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1442-DR-5850 |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | Driver Mass: Approx. 200 g (7.0 oz) |
| Dimensions | Compact DIN-Rail / Mounting Plate Driver Housing |
| Operating Temp | Standard Industrial Temperature Range |
| Power Consumption | -15 mA maximum current draw (with 10 kohm load) |
| Power Supply | -24 VDC nominal |
| Calibration Target | AISI 4140 (JIS SCM440) steel flat surface |
| Maximum Output Voltage | -23 VDC |
| Abnormal Output Voltage | -0.6 VDC (Indicates probe or sensor OPEN / SHORT condition) |
| Output Noise | 20 mV peak-to-peak + power supply noise |
| Driver Isolation | 50 V continuous (Basic Insulation Type, terminals to mounting plate) |
| Insulation Resistance | >= 100 Mohm @ 500 VDC between terminals and mounting plate |
| System Cable Length | 5 m or 9 m (16.40 ft or 29.53 ft) nominal |
| Driver Wire Size | 0.75 to 1.25 mm2 (18 to 16 AWG) shielded stranded-copper wire |
Backplane Bus Communication Velocity and Rotor Dynamics
Interfacing seamlessly with Allen-Bradley machinery monitoring platforms, the driver conditions raw eddy-current probe signals to track critical rotor dynamics and shaft displacement. Gap voltage validation (-10 VDC targets) allows technicians to verify correct mechanical probe standoff before system commissioning. Internal cross-talk suppression and high-frequency noise filtering prevent signal degradation, ensuring backplane bus communication velocity and dynamic data transfer remain stable across 1442 series protective monitoring modules.
Frequently Asked Questions
Q: How does the 1442-DR-5850 indicate a damaged or disconnected eddy-current probe?
A: The driver shifts its output signal to an abnormal voltage level of -0.6 VDC whenever an open circuit or short circuit condition is detected in the connected probe or extension cable.
Q: What are the insulation testing limits for the driver terminals to the mounting plate?
A: The driver provides basic insulation rated at 50 V continuous, type tested at 500 VAC for 60 seconds, with an insulation resistance of >= 100 Mohm at 500 VDC between terminals and the mounting plate.
Field Installation Guidelines
- Mount the 1442-DR-5850 driver securely onto a grounded DIN rail or subpanel mounting plate inside the protection cabinet.
- Connect field power wiring to the spring lock terminal block using 0.75 to 1.25 mm2 (18 to 16 AWG) shielded stranded-copper wire rated at 90 deg C or higher.
- Attach the 5 m or 9 m nominal proximity probe extension cable to the driver connector, ensuring the cable shield is grounded according to single-point grounding rules.
- Set mechanical probe tip clearance to achieve a baseline gap voltage validation target (typically -10 VDC) using AISI 4140 steel as the calibration reference surface.
- Verify that all signal wiring is routed separately from high-voltage motor feeds and variable frequency drive output cables to prevent electromagnetic noise coupling.
