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MMC progammable controller

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The modular MMC PLC

MMC, the modular PLC for mobile work machines, is a control unit consisting of a basic controller and extension modules. The size of the control unit can easily be scaled individually. Depending on the inputs and outputs required, the number of modules in the system can be varied.

At the same time, the MMC acts externally in the control environment like one single controller. The extension modules are connected at operating system level, therefore making connection especially easy: the system identifies new modules automatically via their connector coding.

The modular MMC controller provides one master and three different types of extension (slaves):

MMA analoge slave primarily with analog inputs and outputs

MMD digital slave with digital inputs and outputs

MMC slave with a mix of inputs and outputs

A maximum of three type MMA, three type MMD and one type MMC extensions are allowed in one system. The largest possible stage of extension for the MMC controller consists of one master and five slaves. The modular PLC communicates via CAN and can be freely programmed according to IEC 61131-3 or in C.

MMC usable inputs and outputs

Highlights

  • Micro-controller with an internal watchdog
  • Additional external watchdog with a time window
  • Micro-controller and external watchdog, each with separate voltage regulation and cycle generation
  • Additional means of switching off using a safety relay according to the principle of closed circuit current
  • Reverse measurement of all outputs
  • Activation input for direct supply and shut-down of the micro-controller, watchdog and safety relay
  • Aluminum housing with a ventilation membrane, protection system IP65, IP69K
  • Power supply: 8 V to 32 V (UB)
  • Working temperature range: −40 °C to +85 °C (housing temperature)