Siemens SINAMICS S120 AC frequency converter

3. Debugging and Tools

Debugging Tools: Use the STARTER debugging tool in conjunction with the SIZER configuration tool for driver selection and configuration. Document support includes SIZER and configuration manuals during the planning/engineering phase, STARTER, beginner's guides, debugging manuals during the debugging phase, and operation manuals and list manuals during the usage phase.

Debugging process: It is necessary to follow safety steps (such as power-off, discharge, and power verification), configure parameters (such as motor parameters and control modes), test functions (such as safety functions and braking functions), check EMC compliance, and ensure that all components (such as power modules, control units, and filters) are connected correctly and functioning properly.

Service and Maintenance

1. Safety maintenance requirements

Before maintenance, it is necessary to ensure that the equipment is powered off, wait for the DC link capacitor to discharge (up to 5 minutes), verify that there is no voltage, identify and isolate all hazardous energy sources (such as compressed air and hydraulic systems), ensure that the protective conductor connections are compliant (to avoid high discharge current risks), and only allow qualified personnel to operate.

Regularly check the tightening torque of power connections (such as lines, motors, DC link connections), pay attention to the status of vulnerable parts (such as fans, capacitors), and follow environmental requirements (temperature, humidity, no pollutants).

2. Component replacement and maintenance

Hardware replacement: such as control unit fan (CU310-2 DP/PN), power module fan (PM240-2, PM340, Chassis format), power module power block (Chassis format FX/GX), control interface module (Chassis format), etc., specific steps need to be followed (such as removing cover plate, disconnecting, installing new components, restoring cover plate), paying attention to tightening torque and wiring correctness.

Capacitor formation: DC link capacitors need to be formed regularly (such as after long-term storage), following the manual process (such as gradually applying voltage and monitoring current) to ensure capacitor performance.