DC-bus operation Application examples Example 1 7 7.7 7.7.1 7.7 Application examples 7.7.1 Example 1 - supply module with multi-axis controllers Assumptions: ƒ 400 V, 3 AC/PE ƒ 7 axes in 2 power categories ƒ no particular dynamic performance requirements The following motors (Mx) are selected: For the above motor data, the following controllers (Gx) are selected: The power required by the drive system is determined with the below formula ( 7.5.5): P DCtotal = 17.4 kW P DCtotal = 5 * (2.5 kW / 0.92 + 0.19 kW) + 2 * (1.2 kW / 0.90 + 0.12 kW) The calculated power requirement is used to select the supply module: Note: Only the supply module with mains filter reaches the required power.
Checking the power efficiency: With 17.5 kW > 17.4 kW, P DC100% > P DCtotal . Select cables and fuses in accordance with the Technical data. 3 AC L2 L1 L3 ... M M M M V1 G 1 G x Fig. 7.7-1 Basic circuit diagram 7.7-1 EDS94SPP101 EN 3.1-04/2007 Motor type Rated power Efficiency Rated current Index [kW] [A] M1 ... M5 MCS14H15 2.5 0.92 6.6 M6 ... M7 MCS09F38 1.2 0.90 2.5 Controller Rated power Typical motor power Power loss Pl Rated current Index [kW] [kW] [kW] [A] G1 ... G5 E94AMxE0074 4.8 3.0 0.19 7.0 G6 ... G7 E94AMxE0034 1.7 0.75 0.12 2.5 Supply module (+ mains filter) Rated power (PDC100%) Index [kW] V1 E94APNE0364 + E94AZMP0294 17.5