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Overview

The EPRO MMS 6350 Speed Measurement Card is a high-performance system designed to monitor and protect rotating machinery from overspeed conditions. As part of the Dynamic Overspeed Protection System (DOPS), this card features a triple-channel design for maximum safety and reliability.

Key Features

Triple-Channel Design
The card uses three independent channels to detect, process, and evaluate signals. This ensures accurate measurements and enhances safety by employing a 2-out-of-3 logic for critical functions.

Overspeed Protection
It effectively measures speed and provides protection against inadmissible overspeed conditions. The system operates in a closed-circuit mode, maintaining high operational and protection standards.

Integrated Fault Detection
The MMS 6350 continuously monitors the speed sensors and output signals. Any faults trigger a plaintext display on the front panel and are communicated via output contacts, helping you address issues promptly.

Peak Value Memory
This feature stores the maximum speed value before the machine shuts down. It offers valuable data for assessing mechanical loads and performance during overspeed events.

Dynamic Outputs
The card processes input pulses and outputs them as TTL pulses or via potential-free opto-couplers, allowing for flexible signal communication.

Flexible Configuration
You can customize functions and alarms through binary inputs and outputs. Configuration is simple with RS-232 or RS-485 communication interfaces.

Redundant Power Supply
With two redundant +24 V inputs, the system ensures reliable operation, even in demanding environments.

Technical Specifications

Signal Inputs

• Voltage Range: 0 to 27.3 V DC (Limit: 0 to 30 V).
• Input Resistance: > 100 kOhm.
• Signal Type: Differential, non-reactive, open-circuit, and short-circuit proof.

Signal Outputs

• Sensor Signal: Buffered, non-reactive output.
  • Range: 0 to 4.1 V (Accuracy: ±1% of full-scale).
• Dynamic Outputs:
  • Voltage: +24 V (UC), +48 V (Collector).
  • Current: Max 100 mA.
  • TTL Pulses: Open-circuit and short-circuit proof, 0 to 5 VSS.
  • Frequency Range: 0 Hz to 20 kHz.
  • Pulse Outputs: Via potential-free opto-couplers.

Speed Measurement

• Max Frequency: 20 kHz.
• Max Speed: 65,535 RPM (with up to 18 teeth on the trigger wheel).

Current Outputs

• Range: 0/4 to 20 mA (Galvanically isolated for Output 1).
• Accuracy: ±0.1% of full-scale / 16-bit resolution.

Environmental Conditions

• Operating Range: 0 to +65°C.
• Storage Temperature: -30 to +85°C.
• Humidity: 5% to 95% non-condensing.
• EMC Compliance: EN 50 081-1 / EN 50 082-2.

Mechanical Design

• PCB Format: Euro-format (100 x 160 mm) per DIN 41 494.
• Protection Class: IP 00.
• Dimensions: 42 TE (213 mm).

Applications

• Rotating Machinery: Ideal for turbines, compressors, pumps, and other critical equipment.
• Industrial Safety: Provides reliable operation, preventing damage from overspeed conditions.
• Monitoring and Diagnostics: Assists in real-time analysis and long-term maintenance planning.

Ordering Information

• Part Number: MMS 6350 Speed Measurement Card.
• Order Code: 9100–00039.

Details