European Machinery Directive the system up and repair faults. These personnel must be thoroughly acquainted with The MICROMASTER inverter series does not fall under the scope of all the warnings and operating procedures the Machinery Directive. However, the products have been fully contained in this manual.
The MICROMASTERS are a range of frequency inverters for controlling the speed of three phase AC motors. Various models are available, ranging from the compact 120 W single phase input MICROMASTER up to the 7.5 kW three phase input MICROMASTER.
2. INSTALLATION 2.3 Electrical Installation The electrical connectors on the MICROMASTER are shown in Figure 3. Connect the cables to the power and control terminal blocks in accordance with the information supplied in sections 2.3.1 - 2.3.4. Ensure that the leads are connected correctly and the equipment is properly earthed as shown in Figure 3.
1.5 seconds while the inverter is stopped. (3) The inverter is programmed at the factory for standard applications on Siemens four-pole standard motors. When using other motors it is necessary to enter the specifications from the motor’s rating plate into parameters P081 to P085 (see Figure 10) .
It assumes that a standard Siemens four-pole motor is connected to the inverter (see section 3.2.1 if a different motor type is being used) .
Several inverters can be connected to an external control unit at the same time. The inverters can be addressed individually. For further information, refer to the following documents (available from your local Siemens office) : E20125-B0001-S302-A1 Application of the USS Protocol in SIMOVERT Units 6SE21 and...
4.6 Closed Loop Control 4.6.1 General Description The MICROMASTER provides a PI control function for closed loop control (see Figure 11) . PI control is ideal for temperature or pressure control, or other applications where the controlled variable changes slowly or where transient errors are not critical.
All 1 AC and 3 AC 230 V MICROMASTERS (excluding MM400/2) are suitable for 208 V operation. All 3 AC 230 V MICROMASTERS can operate on 1 AC 230 V (MM300/2 requires an external line choke, e.g. 4EM6100-3CB). 380 V - 500 V Three Phase MICROMASTER Inverters Order No. (6SE92 ..)
This approach is only applicable to radio communication transmitting apparatus. The MICROMASTER units do not have an intrinsic function until connected with other components (e.g. a motor). Therefore, the basic units are not allowed to be CE marked for compliance with the EMC directive.
The inverter’s packaging is re-usable. Retain the packaging or return it to the manufacturer for future use. If the unit has been in storage (non-operational) for more than one year, you must re-form the DC-link capacitors before use. Refer to your local Siemens sales office for advice on the procedure. Dismantling and Disposal The unit can be broken-down to its component parts by means of easily-released screw and snap connectors.