Danfoss VLT FC 100 Series Manual

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Danfoss VLT FC 100 Series Manual Manual pdf 69 page image

7. Application Examples7.1. Example: Working with Instance 101/151 ProcessThis example shows how to work with I/O In-stance 101/151, which consists of ControlWord/Status Word and Reference/Main ActualValue. The Instance 101/151 also has two ad-ditional words, which can be programmed tomonitor process signals, as shown in the fig-ure.The application requires monitoring of themotor torque and digital input, so PCD 3 is setup to read the actual motor torque. PCD 4 isset up to monitor the state of an external sen-sor via the process signal digital input. Thesensor is connected to digital input 18.An external device is also controlled via con-trol word bit 11 and the built-in relay of thefrequency converter.Reversing is permitted only when the revers-ing bit 15 in the control word and the digitalinput 19 are set to high.For safety reasons the frequency converterwill stop the motor if the DeviceNet cable isbroken, the master has a system failure, orthe PLC is in stop mode.FC 100/ 200/ 300 DeviceNet 7. Application ExamplesMG.33.D3.02 - VLT® is a registered Danfoss trademark 697