Bently Nevada 3500/50 Tachometer Module

The 3500/50M Tachometer Module is a 2-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotative speed, rotor acceleration, or rotor direction. The module compares these measurements against user-programmable alarm setpoints and generates alarms when the setpoints are violated. The Tachometer Module is programmed using the 3500 Rack Configuration software. The following configuration options are available: l Speed Monitoring, Setpoint Alarming and Speed Band Alarming l Speed Monitoring, Setpoint Alarming and Zero Speed Notification l Speed Monitoring, Setpoint Alarming and Rotor Acceleration Alarming l Speed Monitoring, Setpoint Alarming and Reverse Rotation Notification

The 3500 System provides continuous, online

monitoring suitable for machinery protection

applications, and is designed to meet the requirements

of the American Petroleum Institute’s API 670 standard

for such systems. The system’s modular rack-based

design includes the following components:

• 3500/05 Instrument Rack (required)

• One or two 3500/15 Power Supplies (required)

• 3500/22M Transient Data Interface (TDI) Module

(required)

• One or more 3500/XX Monitor Modules

(required)

• One or more 3500/32M (4-channel) or 3500/33

(16-channel) Relay Modules (optional)

• One or two 3500/25 Keyphasor* Modules

(optional)

• One or more 3500/92 Communication Gateway

Modules (optional)

• Input/Output (I/O) Modules (required)

• 3500/94M VGA Display (optional)

• Internal or external intrinsic safety barriers, or

galvanic isolators for hazardous area

installations (optional)

• 3500 System Configuration Software (required)

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