Description

The BOCHMANN MPC270 is a high-performance, standalone motion controller developed by BOCHMANN Antriebstechnik GmbH, a German specialist in motion control solutions for the printing, converting, and packaging industries. Designed as a compact, DIN-rail mountable module, the MPC270 integrates real-time multi-axis coordination, logic control (PLC functionality), and extensive I/O handling into a single unit—eliminating the need for separate motion cards or external PLCs in mid-complexity automation systems.

At its core, the MPC270 features a dedicated real-time processor capable of executing complex motion profiles such as electronic line shafting (ELS), flying cut-off, registration mark correction, and cam-based synchronization—all critical in continuous web processing applications like label printing, film slitting, or cardboard die-cutting. It supports up to 8 coordinated axes via incremental encoder feedback and pulse/direction or analog ±10 V outputs, with optional expansion for additional I/O or communication interfaces.

The MPC270 communicates via industrial fieldbuses including CANopen, RS485, and proprietary BOCHMANN protocols, enabling seamless integration with servo drives (e.g., from Lenze, SEW, or Bosch Rexroth) and HMI panels. Its embedded programming environment allows users to develop custom motion sequences using structured text or ladder logic, while pre-configured function blocks accelerate commissioning for standard tasks like unwind/rewind tension control or print register adjustment.

Widely deployed in European machinery OEMs, the MPC270 is especially valued in legacy printing presses where long-term reliability and deterministic performance are essential. Despite being phased out in newer BOCHMANN product lines (succeeded by MPC3xx/4xx series), the MPC270 remains a critical spare part for maintaining decades-old but still operational production lines.

Technical Specifications

Main Features and Advantages

Integrated Motion + Logic Control: The MPC270 combines motion interpolation and PLC logic in one device, reducing system complexity and cost. This is ideal for machines that require tight coupling between mechanical motion and process logic (e.g., stopping at a specific phase when a fault occurs).

Deterministic Real-Time Performance: With hard real-time cycle times down to 1 ms, the MPC270 ensures precise axis synchronization—even under varying load conditions—critical for maintaining print registration or cut accuracy at high speeds.

Legacy Machine Modernization: While no longer in active production, the MPC270 enables continued operation of older printing and converting equipment. Its well-documented protocol and modular design allow for partial upgrades (e.g., replacing drives while retaining the MPC270 controller).

Robust Industrial Design: Enclosed in a metal housing with conformal coating, the MPC270 resists dust, vibration, and electrical noise common in factory environments—ensuring years of reliable service.

Dedicated Industry Functionality: Unlike generic motion controllers, the MPC270 includes built-in functions tailored to web handling: dancer roll control, inertia compensation, diameter calculation for rolls, and automatic speed ramping during splicing.

Application Field

The MPC270 is predominantly used in rotary printing presses (flexo, gravure, offset), where it synchronizes plate cylinders, impression rollers, and folder units across multiple printing stations. It ensures color-to-color register accuracy within ±0.05 mm—even at speeds exceeding 300 m/min.

In converting machinery, such as label die-cutters, the MPC270 controls the timing between unwinding, printing, laminating, and cutting stations using registration mark sensors to dynamically adjust phase positions. Similarly, in slitting/rewinding lines for films or foils, it manages taper tension and surface speed matching via closed-loop dancer or load cell feedback.

Other applications include:

• Carton erecting machines

• Envelope manufacturing lines

• Flexible packaging form-fill-seal systems

• Bookbinding and paper folding equipment

Related Products

• MPC280: Enhanced version with more memory, faster processor, and expanded I/O.

• MPC350 / MPC400: Successor series with Ethernet support, higher axis count, and modernized firmware.

• BOCHMANN I/O Modules: e.g., DI270 (digital input), DO270 (digital output) for I/O expansion.

• BOCHMANN HMI Panels: Dedicated operator interfaces that communicate directly with MPC270.

• Lenze SMV / SEW MOVIDRIVE: Commonly paired servo inverters controlled via CANopen or analog signals.

• Encoder Interface Modules: For connecting absolute encoders or SSI devices (optional add-ons).

Installation and Maintenance

Pre-installation: Verify compatibility between the MPC270 firmware version and connected drives/sensors. Ensure proper shielding and grounding of encoder and motor cables to prevent noise-induced position errors. The module should be mounted vertically with adequate airflow.

Maintenance Tips:

• Regularly back up the application program via RS232 using BOCHMANN’s configuration software.

• Monitor error logs for encoder loss, communication timeouts, or overcurrent events.

• Clean ventilation slots to prevent overheating, especially in dusty printing environments.

• If replacing a failed unit, ensure the new MPC270 has the same hardware revision and firmware level to avoid parameter mismatches.