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OHG MEC 4-MCU

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The OHG MEC 4-MCU is a seventh-generation, fully integrated machine control system from HAVER & BOECKER, combining weighing, control, and operation into a single, modular unit. Designed specifically for HAVER filling machines, it features a PCT-approved and calibratable weigher electronic system at its core.
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Technical specifications for OHG MEC 4-MCU

  • Manufacturer:
    Haver&boecker
  • Part Number:
    OHG MEC 4-MCU
  • Product Family:
    Haver&boecker
  • Weighing Control Module:
    Premium A/D converter. OIML certified. High sampling rate, fine resolution, intelligent filters.
  • Machine Control Unit:
    Central control unit. Digital I/Os, Ethernet switch, serial interfaces. SD card for central data storage.
  • Human Machine Interface:
    Touchscreen operator terminal. 7" or 12" widescreen, scratch-resistant glass.
  • Digital Control Unit:
    Adds connections for digital sensors/actuators.
  • Analogue Control Unit:
    Adds connections for analogue/digital sensors/actuators.
  • Design & Robustness:
    Metal housings. High temperature resistance. Protection against electromagnetic interference
  • Calibration & Approval:
    PCT-approved weigher electronics. Calibratable. Compliant with 2004/22/EG directive.
  • Weight:
    2.3 kg
  • Estimated shipping dimensions:
    20x15x5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The OHG MEC 4-MCU represents the pinnacle of HAVER & BOECKER's decades-long evolution in electronic weighing, now in its seventh generation with over 30,000 units deployed globally. This modular control system is a customized solution that seamlessly integrates weighing, controlling, and operating functions. 

At the heart of its weighing capability is the Weighing Control Module (WCM), a premium analogue-digital converter. The WCM senses, amplifies, and digitizes the weight signal with high sampling rates and fine resolution, enabling exact weight determination for precise dosing cut-off. 

Central to the OHG MEC 4-MCU system's intelligence is the Machine Control Unit (MCU). Acting as the system's core, the MCU records machine conditions via sensors, processes operator inputs, and executes the control program to manage all actuators. 

It houses the critical communication interfaces, including an Ethernet switch and serial ports, to network all peripheral modules. All essential programs, setup parameters, and operational data are centrally stored on an SD memory card within the MCU. 

Operator interaction with the OHG MEC 4-MCU system is facilitated through the robust Human Machine Interface (HMI). Available in 7" or 12" widescreen versions with a scratch-resistant glass surface, this touchscreen terminal is built for harsh industrial environments.

It serves as the central display for all weight values and machine operating conditions, guiding the operator through an intuitive menu with a single-button operation philosophy. 

The modularity of the OHG MEC 4-MCU system is extended through specialized additions like the Digital Control Unit (DCU) and Analogue Control Unit (ACU) for expanding I/O capacity, and the Weighing Interface Unit (WIU) for connecting additional weighing modules. Programmed using the globally recognized IEC 61131-3 standard via 3S CoDeSys software, the system offers unparalleled flexibility. 

Alternative Names
MCU + WCM DCU ACU WIU + WCM
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What are the core components of the OHG MEC 4-MCU, and what is the primary function of the WCM?
The OHG MEC 4-MCU is built around three core modules: the Machine Control Unit (MCU) for central processing, the Human Machine Interface (HMI) for operation, and the Weighing Control Module (WCM). The WCM is a high-precision analogue-digital converter responsible for sensing, amplifying, and digitizing the weight signal from load cells. Its combination of high sampling rates, fine resolution, and intelligent filtering enables the exact weight determination critical for accurate dosing cut-off in filling processes.
How does the OHG MEC 4-MCU ensure high availability and ease of service, particularly regarding calibration?
The OHG MEC 4-MCU is designed for maximum uptime. A key service advantage is that the MCU, which centrally stores all data on an SD card, can be replaced without violating the PCT-approved calibration seal of the weighing system. This allows for rapid controller swaps by maintenance personnel using no special tools and with no data loss. Furthermore, the use of standardized components across HAVER machines reduces spare part variety and enables faster procurement.
What options are available for expanding the I/O and weighing capacity of the base OHG MEC 4-MCU?
The modular architecture of the OHG MEC 4-MCU allows for flexible expansion. The Digital Control Unit (DCU) and Analogue Control Unit (ACU) can be attached to the MCU to provide additional connections for digital or analogue sensors and actuators. For scaling weighing points, the Weighing Interface Unit (WIU) offers the possibility to connect additional Weighing Control Modules (WCM) to the central MCU, supporting more complex multi-scale filling systems.
What software standards does the OHG MEC 4-MCU comply with, and what are the operator interface specifications?
The OHG MEC 4-MCU system is programmed using CoDeSys software, fulfilling the requirement of the globally recognized IEC 61131-3 programming standard. For operator interaction, the system employs a robust Human Machine Interface (HMI). This touchscreen terminal is available in either a 7-inch or 12-inch widescreen format, features a scratch-resistant glass surface for durability in rough conditions, and provides an intuitive, single-button operation concept to guide users efficiently.