YOKOGAWA MHR110A

Description

Product Description

Product Parameters

• Brand/Model: YOKOGAWA MHR110A
• Core I/O Parameters
  • Analog Input (AI): 8 channels, 4-20mA DC (2-wire/4-wire compatible), ±0.1% FS accuracy
  • Digital Input (DI): 16 channels, 24V DC, NPN/PNP compatible, 5ms response time
  • Digital Output (DO): 8 channels, 24V DC transistor output, 0.5A per channel (total 4A)
  • Isolation: Channel-to-channel isolation (2500V AC), module-to-bus isolation (3000V AC)
• Communication & System Parameters
  • Communication Protocol: V-net/IP (Yokogawa proprietary), 100Mbps/1Gbps auto-negotiation
  • Compatible Systems: Yokogawa CENTUM VP R6.03 and above
  • Diagnostic Functions: Channel fault detection, power supply monitoring, communication link status
  • Configuration Software: Yokogawa Exaquantum or CENTUM VP Engineering Environment
• Environmental & Physical Parameters
  • Operating Temperature: -20°C ~ +60°C
  • Storage Temperature: -40°C ~ +85°C
  • Vibration Resistance: 5g (10-500Hz, IEC 60068-2-6 standard)
  • Power Supply: 24V DC (18-32V wide range), power consumption ≤ 15W
  • Protection Grade: IP20 (cabinet installation)
  • Installation Method: DIN 35mm rail mounting or Yokogawa standard rack installation
  • Dimensions: 140mm × 120mm × 40mm

Advantages & Features

1. High-Precision Multi-Signal Integration: YOKOGAWA MHR110A combines 8 AI, 16 DI, and 8 DO channels in a single module, reducing the number of components required for process control and simplifying wiring. The ±0.1% FS accuracy for analog inputs ensures reliable measurement of critical process variables (e.g., pressure, flow, temperature).
2. Robust Industrial Design: With high EMI resistance and compliance with IEC 60068 environmental standards, YOKOGAWA MHR110A operates stably in harsh industrial environments, including areas with high vibration (e.g., pump stations) or electrical noise (e.g., near motors and transformers).
3. Hot-Swappable & Low-Maintenance: YOKOGAWA MHR110A supports hot-swappable replacement without shutting down the DCS system, allowing maintenance teams to replace faulty modules during normal operation. Built-in diagnostic functions provide real-time alerts for channel or communication faults, accelerating troubleshooting.
4. Seamless CENTUM VP Integration: Optimized for Yokogawa’s CENTUM VP DCS, YOKOGAWA MHR110A leverages the V-net/IP protocol for fast, secure data transmission, ensuring real-time synchronization between field devices and the central controller. This integration simplifies system configuration and reduces compatibility issues.

Application Fields & Cases

1. Oil Refinery Distillation Column Control: A major oil refinery deployed YOKOGAWA MHR110A modules to monitor and control its distillation columns. The modules collected analog signals from pressure and temperature sensors (AI channels) and digital signals from level switches (DI channels), while DO channels controlled valve actuators. YOKOGAWA MHR110A’s high accuracy ensured precise temperature regulation, improving product yield by 2%.
2. Chemical Plant Reactor Safety System: A chemical manufacturing plant integrated YOKOGAWA MHR110A into its reactor safety system, using DI channels to detect emergency shutdown signals and DO channels to trigger relief valves. The module’s robust design withstood the plant’s high-vibration environment, and hot-swappable capability allowed maintenance without interrupting production.
3. Power Plant Boiler Feedwater Control: A coal-fired power plant used YOKOGAWA MHR110A to control boiler feedwater systems, with AI channels measuring flow rates and water levels, and DO channels operating pumps and valves. The module’s fast response time (5ms for DI) ensured rapid adjustments to feedwater flow, preventing boiler water level fluctuations and enhancing operational safety.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: YOKOGAWA MHR110A is ideal for existing Yokogawa CENTUM VP users requiring multi-channel I/O integration and high precision in process control. For applications needing extended temperature range (-40°C ~ +70°C), consider Yokogawa MHR120A. Projects requiring PROFINET communication should opt for Siemens ET 200SP instead.
2. Precautions:
   • Use shielded cables for analog signal wiring to minimize EMI interference and ensure measurement accuracy.
   • Verify compatibility with the CENTUM VP system version before installation (requires R6.03 or above).
   • Configure channel isolation settings correctly to avoid ground loops, which can cause signal distortion.
   • Perform regular calibration of analog input channels (recommended annually) to maintain ±0.1% FS accuracy.
   • Ensure the module is grounded properly to comply with safety standards and prevent electrical hazards.

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