Bently Nevada 3500/40-01-01 | 3500/40M Proximitor Monitor

Description

The 3500/40M Proximitor Monitor is a 4-channel monitor that accepts input from Bently Nevada proximity transducers, conditions the signal to provide various vibration and position measurements, and compares the conditioned signals with user-programmable alarms.

Key Functions

The user can program each channel of the 3500/40M with the 3500 Rack Configuration Software to perform any of the following functions:

Radial Vibration
Thrust Position
Differential Expansion
Eccentricity
REBAM®

Note: The monitor channels are programmed in pairs and can perform up to two of these functions simultaneously. Channels 1 and 2 can perform one function, while channels 3 and 4 perform another (or the same) function.

Primary Purpose

The primary purpose of the 3500/40M monitor is to provide:

Machinery Protection: Continuously compares monitored parameters against configured alarm setpoints to drive alarms.
Essential Machine Information: Supplies valuable data for both operations and maintenance personnel.

Each channel, depending on configuration, conditions its input signal into various parameters called “static values.” Users can configure alert setpoints for each active static value and Danger setpoints for any two of the active static values.

Specifications

Inputs

Signal: Accepts from 1 to 4 proximity transducer signals.
Input Impedance:
- Standard I/O: 10 kΩ
- TMR I/O: Effective impedance of three bussed TMR I/O channels wired in parallel to one transducer is 50 kΩ.
Power Consumption: 7 watts typical

Sensitivity

Radial Vibration, Thrust, Eccentricity: 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil)
Differential Expansion: 0.394 mV/µm (10 mV/mil) or 0.787 mV/µm (20 mV/mil)
REBAM: 40 mV/µm (1000 mV/mil) or 80 mV/µm (2000 mV/mil)

Outputs

Front Panel LEDs:
- OK LED: Indicates proper operation.
- TX/RX LED: Shows communication with other modules in the 3500 rack.
- Bypass LED: Indicates when in Bypass Mode.
Buffered Transducer Outputs: One coaxial connector per channel, short-circuit protected.
Output Impedance: 550 Ω
Transducer Power Supply: -24 Vdc

Signal Conditioning

Radial Vibration

Frequency Response:
- Direct filter: User programmable, 4 Hz to 4000 Hz or 1 Hz to 600 Hz
- Gap filter: -3 dB at 0.09 Hz
- Not 1X filter: 60 cpm to 15.8 times running speed
- Smax: 0.125 to 15.8 times running speed
- 1X and 2X Vector filter: Constant Q Filter with minimum rejection in stopband of -57.7 dB
Accuracy:
- Direct, Gap, 1X, 2X: ±0.33% of full-scale typical, ±1% maximum
- Smax: ±5% maximum
- Not 1X: ±3% for speeds <30,000 cpm, ±8.5% for speeds >30,000 cpm

Thrust and Differential Expansion

Frequency Response:
- Direct filter: -3 dB at 1.2 Hz
- Gap filter: -3 dB at 0.41 Hz
Accuracy: Within ±0.33% of full-scale typical, ±1% maximum

Eccentricity

Frequency Response:
- Direct filter: -3 dB at 15.6 Hz
- Gap filter: -3 dB at 0.41 Hz
Accuracy: Within ±0.33% of full-scale typical, ±1% maximum

Alarms

Alarm Setpoints

Configuration: Set Alert levels for each measured value and Danger setpoints for any two values.
Adjustability: 0 to 100% of full-scale for each measured value.
Accuracy: Within 0.13% of the desired value.

Alarm Time Delays

Radial Vibration, Thrust, Differential Expansion, Eccentricity:
- Alert: 1 to 60 seconds in 1-second intervals.
- Danger: 0.1 seconds or 1 to 60 seconds in 0.5-second intervals.
REBAM:
- Alert: From calculated minimum value to 400 seconds in 1-second intervals.
- Danger: From calculated minimum value to 400 seconds in 0.5-second intervals.

Environmental Limits

Operating Temperature:
- With Internal/External Termination I/O Module: -30°C to +65°C (-22°F to +150°F)
- With Internal Barrier I/O Module (Internal Termination): 0°C to +65°C (+32°F to +150°F)
Storage Temperature: -40°C to +85°C (-40°F to +185°F)
Humidity: 95%, non-condensing

Physical Dimensions

Monitor Module (Main Board):
- Dimensions (H x W x D): 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
- Weight: 0.91 kg (2.0 lb.)