Description
Technical Specifications
- Product Model: 1701/15, PN:1034549‑20
- Brand: Bently Nevada
- Warranty: One Year
- Input Voltage: 24 V DC nominal, operating range 18‑30 V DC, powered via FieldMonitor terminal base
- Operating Temperature: ‑30 °C ~ +70 °C; 5‑95 %RH non‑condensing
- Storage Temperature: ‑40 °C ~ +85 °C
- Response Time: Configurable alarm delay 0.15‑20 s; signal bandwidth high‑pass 1 Hz /4 Hz, low‑pass 600 Hz /4000 Hz
- Protection Class: IP20, hot‑swap plug‑in module for 1701 terminal base; ATEX / IECEx UL Class I Div2 Zone2 T4 certified
- Accuracy Class: Proximitor input measurement accuracy ±1 % FS; supports radial vibration and thrust‑gap position readings
- Supported Sensor: Eddy‑current proximity probes (3300 / 3300XL series)；not for seismic velocity/acceleration sensors(seismic version is 1701/25‑1034549‑21)
- Channel Configuration: 2 independent proximitor input channels; each channel outputs vibration amplitude and gap‑voltage position value
- Rated Current Range: Module consumption approx.120 mA@24VDC; probe drive power supplied by module
- Communication Interface: Back‑plane bus for FieldMonitor 1701 system; status LED; relay alarm outputs; analog 4‑20 mA output option
- Supported Protocols: Bently Nevada FieldMonitor internal bus; data compatible with System 1 monitoring software
- Overload Capacity: Built‑in probe open‑circuit / short‑circuit detection, cable fault diagnostics, ESD & surge protection; channel‑wise fault isolation
- Dimensions: 127 mm × 21.6 mm × 105 mm; weight approx. 0.314 kg
Product Overview
Bently Nevada 1701/15 (1034549‑20) is dual‑channel proximitor input monitor for FieldMonitor 1701 distributed machinery protection system. It receives raw eddy‑current probe signals, implements amplification, filtering and linearization, outputs radial shaft vibration and thrust‑bearing gap‑position measurement values. Each channel supports Alert(Alarm1) and Danger(Alarm2) programmable threshold, with configurable time‑delay to avoid false tripping from transient spikes. It continuously performs self‑diagnosis for probe and cable health. Hot‑swap design allows module replacement without system power‑off. This module reduces long analog field wiring and improves noise‑immunity for skid‑mounted rotating‑machinery. It addresses typical pain‑points: vibration signal distortion from long cable runs, unreliable probe‑cable fault detection, false‑alarm caused by transient spikes. Rotating‑machinery engineers, vibration‑commissioning technicians and plant‑maintenance teams benefit from this unit. Used for new‑build distributed machine‑protection projects and drop‑in spare‑part replacement for existing 1701/15 installations.
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