The Marantec Position Box Dynamic 400 MEC is a position monitoring unit designed for Dynamic 400 industrial door operators. It provides accurate door position feedback to the control system, ensuring reliable automation and safe door operation.

What “Dynamic 400 MEC Position Box” means

• Dynamic 400 = industrial roller shutter / door operator series
• MEC = mechanical limit switch system
• “Position box” in this context =
  mechanical cam limit assembly + external control unit (e.g., CS320)

So unlike AWG (electronic encoder), this is a purely mechanical positioning system.

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Core Positioning System (MEC – Mechanical Limits)

How it works

• Uses rotating cam discs inside the gearbox
• Each cam triggers a limit switch:
  • OPEN position
  • CLOSE position
  • Optional intermediate / safety stop

From Dynamic 400 manual:

• Includes “overview of control cams” and manual limit setting procedures

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Key Functional Characteristics

• Manual setting of end positions (via cams)
• Fixed switching points (no digital adjustment)
• Independent of electronics (failsafe simplicity)

What you can configure

• Open limit
• Close limit
• Safety stop (CESD / intermediate cam)

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Control Unit (Position Box / Controller)

Typically paired with:

• CS320 (external industrial controller)
• Or older integrated control variants

Control Features (with MEC systems)

• Works with mechanical AND digital limits
• Programmable inputs/outputs
• Safety circuit integration
• Diagnostic LEDs / optional LCD

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Electrical Specifications (Dynamic 400 Series)

(From Dynamic 400–413 documentation & Marantec standards)

Power Supply

• 230V (single-phase) OR
• 400V (3-phase industrial)
• Frequency: 50/60 Hz

Control Voltage

• 24V DC (low-voltage control circuits)

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Mechanical & Drive Specs

Torque & Application

• Torque range: approx. 100–400 Nm (Dynamic 400 class)
• Designed for:
  • Roller shutters
  • Industrial doors
  • Compact installations

Mechanical Design

• Worm gear drive (steel + bronze)
• Hollow shaft mounting
• Integrated safety catch (anti-fall device)

Emergency Operation

• Hand crank or chain override

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Safety & Monitoring

• Mechanical limit redundancy (independent switching)
• Safety edge compatibility via controller
• Light barrier integration (through control unit)
• Meets industrial safety requirements (EN 12453 via controller)

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Connectivity (via Control Unit)

• Safety edges (8.2kΩ / optical)
• Light barriers (multiple types)
• External controls (push buttons, remotes)
• Brake control (optional motor brake)
• Expansion modules via MS-Bus

Control wiring and safety integration handled at controller level, not the MEC itself

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Operation & Setup

Setup Process (Mechanical)

1. Run door to desired OPEN position
2. Adjust cam until switch engages
3. Repeat for CLOSE
4. Fine-tune manually

Unlike AWG:

• No software
• No display
• No memory retention logic

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MEC vs AWG (Critical Comparison)