The part number 3500/33 149986-01 refers to a Bently Nevada 3500/33 16-Channel Relay Control Module 

 This is a critical component of the Bently Nevada 3500 Machinery Protection System, an industry-standard platform for monitoring the condition of industrial machinery.

Function and Purpose

The primary function of this module is to provide 16 independently configurable relay outputs. These outputs act as switches that can be activated to perform control functions based on alarms and other conditions detected by the 3500 system. For example, if a machine's vibration exceeds a set threshold, the 3500 system can trigger one of the relays on this module, which in turn can initiate an alarm light, sound a horn, or even shut down the machine to prevent damage.

Key Specifications

Channels: It provides 16 channels, each with a single-pole, double-throw (SPDT) relay.

Logic: The module uses "Alarm Drive Logic," which can be programmed with AND and OR logic to create complex alarm rules. This allows a single relay to be controlled by multiple monitored variables.

Physical: The module is a full-height card that installs in the main 3500 system rack, working in conjunction with a separate I/O module to connect to external wiring.

Application: It's used in critical industrial applications, such as power generation, oil and gas, and manufacturing, to ensure the safety and reliability of rotating equipment.

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