Overview

The System Monitor performs four crucial tasks in a 3300 monitor rack, providing the following functionalities:

• Common Monitor Functions:

  • Alarm setpoint adjustment
  • Keyphasor® power, termination, conditioning, and distribution
  • Alarm acknowledgement

• Connectivity:

  • Provides connection of all installed monitors to an external communications processor (sold separately) through STATIC and DYNAMIC data ports.

• Optional Communication Interfaces:

  • Serial Data Interface (SDI): Allows communication of transducer and monitor data to process computers, digital/distributed control systems, programmable controllers, and other control and automation systems.
  • Dynamic Data Interface (DDI): Enables communication of transducer and monitor data to compatible Bently Nevada machinery management software. This option may negate the need for an external communications processor, depending on the type of data required.

Specifications

Inputs

• Power Consumption:

  • 2 watts; 4.6 watts with interface options.

• Keyphasor Signal:

  • Accepts up to four proximity probe Keyphasor signals.
  • Input Impedance: 10 kΩ.

Communications

• RS422:

  • Impedance: 4 kΩ.
  • Threshold: 0.2 V.
  • Baud Rate:
    • 19.2 k baud maximum for SDI.
    • 38.4 k baud maximum for DDI.
  • Distance: 1200 meters (4000 feet) maximum.

• RS232:

  • Impedance: 3 kΩ to 7 kΩ.
  • Input Levels:
    • High: +3V to +25V.
    • Low: -3V to -25V.
  • Baud Rate: 19.2 k baud maximum for SDI and DDI.
  • Distance: 30 meters (100 feet) maximum.

Environmental Limits

• Operating Temperature:
  • 0°C to +65°C (32°F to 150°F).
• Storage Temperature:
  • -40°C to +85°C (-40°F to 185°F).
• Relative Humidity:
  • Up to 95%, non-condensing.

Physical

• Rack Space Requirements:
  • One rack position, installed only in position two (next to the Power Supply).
• Weight:
  • 0.9 kg (2.2 lbs).