Emerson EPRO MMS6220 MMS 6220 Dual Channel Eccentricity Monitor

Overview

The Emerson EPRO MMS6220 is a dual-channel eccentricity monitor designed for continuous and precise monitoring of rotating machinery. It is part of the MMS 6000 machine monitoring system and uses eddy current sensors to measure the relative radial shaft vibration. This enables real-time data acquisition, trend analysis, and alarm generation, making it ideal for monitoring critical equipment like turbines, compressors, fans, and centrifuges.

Technical Specifications

Limit Supervision:

• Adjustable Limit Values: Four independently adjustable limit values per channel.
• Alarm Disable Function: Alarms can be disabled via monitor-locking function, error messages, or external signal.
• Delay Time: Configurable delay time of 60 seconds after configuration and 60 seconds before alarm enable.
• Resolution: 1‰ of full scale deviation (f.s.d).

Output Options:

• Optocoupler Outputs:

  • Max Voltage (Umax): 48 V DC
  • Max Current (Imax): 100 mA

• Current Output (Per Channel):

  • Nominal Range: 0/4…20 mA
  • Accuracy: ±1% of f.s.d
  • Settling Time: 0-10 sec, adjustable
  • Load Resistance: ≤ 500 Ohm

• Voltage Output (Per Channel):

  • Nominal Range: 0-10 V
  • Accuracy: ±1% of f.s.d
  • Load Resistance: ≥ 10 kOhm

• Voltage Output (Proportional to Sensor Signal):

  • Nominal Range: 0-10 V DC
  • Accuracy: ±1% of f.s.d
  • Resolution: 12 bit

Triggering and Measurement:

• Key-Signal Requirement: A full shaft revolution is required for eccentricity measurement. A trigger mark on the shaft, sensor (e.g., PR 6423/.. with CON 011), and the MMS 6310 module are needed for processing the key-signal.

Monitor/Sensor Supervision:

• Signal Supervision: Monitors sensor signals, wiring between the sensor and monitor, system supply voltage, and ensures proper configuration and parameter settings.
• Error Indicators: Errors are displayed via LEDs on the module front, including green LEDs for "Channel Clear" and red LEDs for alarms.

Communication and Configuration:

• RS232 Interface: Available for configuration and data exchange with the monitor via a mini DIN diode socket.

Operating Elements:

• Sensor Signal Outputs: Two independent sensor signal outputs per channel, accessible through SMB sockets.
• LED Indicators: Green LEDs for "Channel Clear", red LEDs for pre- and main alarms, flashing during delays, and permanently lit during danger states.

Module Handling:

• Handle: For easy insertion, removal, and labeling of the monitor.

Environmental and Physical Specifications:

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Humidity: 5% to 95% non-condensing
• Dimensions: Standard module size for easy integration into control systems
• Mounting: DIN rail or panel mount