Bently Nevada 3500/50M 286566-02 3500/50M Two-Channel Tachometer Module
A two-channel 3500 tachometer module for shaft speed, acceleration or direction measurements using proximity probes or magnetic pickups.
Product Identification
3500/50M 286566-02 is retained as the submitted 3500/50M tachometer identity. The 3500/50M accepts up to two proximity-probe or magnetic-pickup signals and can be configured for shaft speed, rotor acceleration, zero-speed or reverse-rotation monitoring.
Conditioned Keyphasor signals may be supplied to the 3500 backplane for other monitors. The manufacturer warns that the 3500/50M is not an independent speed-control or overspeed-protection system; its alarm and proportional outputs are for monitoring and annunciation functions.
The 286566-02 marking, front module, rear I/O type and rack configuration must be verified as one installed assembly.
Engineering Data
- Product family
- 3500/50M Tachometer
- Submitted part number
- 286566-02
- Input channels
- Up to 2
- Supported transducers
- Proximity probes or magnetic pickups, subject to configuration restrictions
- Input signal range
- +10.0 V to −24.0 V
- Standard input impedance
- 20 kΩ
- Typical power consumption
- 5.8 W
- Buffered output impedance
- 550 Ω
- Transducer supply
- 24 V DC, 40 mA maximum per channel
- Recorder outputs
- 4–20 mA, one per channel
- Recorder load
- 0 to 600 Ω
- Maximum speed range
- 99,999 rpm
- Maximum input frequency
- 20 kHz
- Rack space
- One full-height front slot and one corresponding rear I/O slot
Functions
Measure rotational behavior
Processes speed, acceleration, zero-speed or reverse-rotation values according to channel configuration.
Evaluate annunciation limits
Compares measured values with software-configured alarm setpoints and delays.
Share conditioned reference signals
Can send conditioned Keyphasor signals through the 3500 backplane for other monitors.
Applications
Shaft-speed monitoring
Use the approved proximity-probe or magnetic-pickup chain and configured events-per-revolution value.
Rotor-direction observation
Apply the manufacturer restrictions for magnetic pickups before using reverse or zero-speed functions.
Monitoring and data logging
Use proportional outputs for display or recording, not as an independent overspeed trip system.
Lifecycle
Record
Capture 3500/50M 286566-02, rear I/O part, transducers, events per revolution, thresholds and recorder scaling.
Review
Confirm required rack firmware and configuration-software versions before exchange.
Transfer
Preserve channel wiring, sensor power, buffered outputs and recorder circuits.
Validate
Prove speed response, direction logic, alarm delays, backplane reference and recorder output.
About IndustryParts
https://www.industryparts.com/Controlled handling for 3500/50M 286566-02
IndustryParts keeps the submitted 3500/50M 286566-02 identity, requested quantity and installed-system evidence together so a proposed supply can be checked before dispatch.
- Suffix and MOD identity kept visible
- Mating hardware recorded before supply
- Acceptance evidence linked to the order
FAQ
Can 3500/50M 286566-02 be used as an independent overspeed-protection system?
No. The manufacturer explicitly warns that it lacks the protective redundancy and response required for that role.
Which sensors can be connected to 3500/50M 286566-02?
The module accepts up to two proximity-probe or magnetic-pickup signals, with restrictions for certain low-speed and direction functions.
What should accompany a 3500/50M 286566-02 quotation?
Provide the complete front and rear labels, rack firmware, sensor types, events per revolution and channel configuration.
Why should magnetic-pickup use be reviewed carefully?
Bently Nevada restricts magnetic pickups for reverse-rotation and zero-speed options because of low-speed edge behavior.
What acceptance test suits 3500/50M 286566-02?
Document known-speed response, alarms, direction logic, recorder outputs and any conditioned backplane reference.
