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MRT 2.1

MRT 2.0 Digital GovernorAn innovative and cost-effective control solution that offers high-performance and versatile control for new or existing hydro turbines.

Applications

  • Designed for Francis, Kaplan and Impulse turbines of up to two needles
  • Retrofits of existing mechanical, analog, and early digital governor systems
  • Complete governor system replacements

Advantages

  • Standardized design has a fast delivery and reduces installation, spare parts, and training costs
  • Same functionality available in multiple PLC hardware platforms
  • Off-the-shelf components ensure availability and cost-effectiveness of spare parts
  • Proven control algorithms offer fast system and accurate response
    • Standard PID
    • PIDD for enhanced transient capability
  • User configurable to facilitate integration into existing control systems to meet future requirements
  • Designed to replace existing governor systems with minimal downtime

High-Performance and Versatile Control

  • Meets and exceeds international speed governor standards: IEEE-125, IEC 60308, ASME PTC-29
  • Speed position, power, flow, and level control
  • Isolated, off-line, on-line control (dedicated PID parameters for each)
  • 3D CAM optimizes turbine efficiency
  • Speed step test and trending for model validation
  • Synchronous condense, brake, and creep control
  • Auto-Manual, Local-Remote operation
  • Automatic synchronization capability

Powerful and Cost-Effective Design

  • Color touch-screen interface (HMI) to configure/control/tune the system
  • Test and Alarm screens for easy troubleshooting
  • Ability to force outputs for system and hardware verification
  • Configurable I/O facilitates installation and functional expansion
  • Communication options easily integrate with plant’s IEDs and SCADA
  • systems
  • Two speed channels: pulses from pick-up sensor signal or signal from PT
  • Two inputs available for redundant gate positioning sensing
  • Selectable interface language (English or Spanish)

Options

  • Integrated Auto Synchronization
  • Power Transducer
  • Redundant Power Supply
  • Cooling Fan
  • Emergency Stop Push button
  • Custom cabinets and panel arrangements
  • Touchscreen sizes: 7.5 inches, 10.4 inches, 15 inches

Specifications

  • NEMA 12 enclosures
    • Wall-mount cabinet (standard) (H × W × D) 42 in. × 36 in. × 16 in. {1067 mm × 914 mm × 406 mm}
  • Weight: Approximately 200 lb {91 Kg} depending on options
  • Power supply:
    • Output: 24 VDC, 20 A
    • Input: 120 VAC or 240 VAC (50 or 60 Hz), or 125 VDC or 250 VDC
  • Input/Output Modules:
    • 32 digital inputs with 2500 V of isolation, hardware selectable for 24 VDC, 48 VDC, 125 VDC, or 120 VAC inputs on a per channel basis
    • 28 Digital outputs with 2500 V of isolation, output contact rating = 10 A@ 240 VAC or 3A @ 150 VDC, 0.5 A @ 125 VDC
    • 8 Analog inputs (Differential) 14- or 16-bit resolution 0/4 – 20 mA
    • 8 Analog outputs 14-bit resolution 0/4 – 20 mA
  • Communication interface:
    • Standard: ModBus TCP/IP or Ethernet/IP (Allen Bradley)
    • Optional: Serial RS485 or RS232 ModBus port
    • Optional: Managed Ethernet switch to expand number of ports
    • Optional: Ethernet protocol converts
  • Environmental:
    • Storage Temperature: 32 °F to 140 °F {0 °C to +60 °C}
    • Operating Temperature: 32 °F to 122 °F {0 °C to +50 °C}
    • Max relative humidity 95% (non-condensing)
  • General Performance
    • Speed dead band: < 0.02%
    • Governor dead time: < 0.2 s
    • Speed stability index < 0.1%
    • Power stability index < 0.4%
  • Standard Parameter Adjustment
    • Proportional gain: 0 – 20
    • Integral action time: 0 – 9.999 1/s
    • Derivative time: 0 – 9.999 s
    • Permanent speed droop: 0 – 10%
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