3500/50-01-00 Bently Nevada 133388-02 Tachometer Module

Description:

The 3500/50 Tachometer Module is a 2-channel modulethat accepts input from proximity probes or magneticpickups (except as noted) to determine shaft rotativespeed, rotor acceleration, or rotor direction, comparesthese measurements against user-programmable alarmsetpoints, and generates alarms when these setpoints areviolated  The 3500/50 Tachometer Module is programmedusing the 3500 Rack Configuration Software and can beconfigured with four different options.

Speed Monitoring, Setpoint Alarming, and SpeedBand Alarming.
Speed Monitoring, Setpoint Alarming, and ZeroSpeed Notification.
Speed Monitoring, Setpoint Alarming, and RotorAcceleration Alarming.
Speed Monitoring, Setpoint Alarming, andReverse Rotation Notification.

The 3500/50 can be configured to supply conditioned Keyphasor® signals to the backplane of the 3500 rack for use by other monitors, thus eliminating the need for a separate Keyphasor® module in the rack. The 3500/50 also has a peak hold feature that stores the highest speed, highest reverse speed, or number of reverse rotations (depending on channel type selected) that the machine has reached. These peak values can be reset by the user.

Note: Bently Nevada does supply an Overspeed Protection System for the 3500 System. Consult Specification and Ordering Information part number 141539-01.

Inputs

Signal: 
Each Tachometer Module accepts up to two transducer signals from proximity probe transducers or magnetic pickups. The input signal range is +10.0 V to -24.0 V. Signals exceeding this range are limited internally by the module.

Input Impedance:
20 k Ω (standard);
40 kΩ (TMR);
7.15 kΩ (Internal Barrier).

Power Consumption:
5.8 Watts, typical.

Transducers:
Accepts 1-2 proximity transducer signals.

Note: Restrictions may apply to magnetic pickups. Refer to the Application Note (page 1).

Ordering Information

3500/50 AA-BB

A: I/O Module Type

B: Hazardous Area Approval Option

Spares

Datasheet Link: