Siemens MICROMASTER 420 Reference Manual page 15

Figure 2-1 Current Limit Interaction .........................................................................................................8
Figure 2-2 PTC Resistor Connections ..................................................................................................10
Figure 2-3 Boost Level...........................................................................................................................11
Figure 2-4 Quick response with overshoot: P2280 = 0.30; P2285 = 0.03 s ..........................................14
Figure 2-5 Quick response with overshoot, but instability: P2280 = 0.55; P2285 = 0.03 s ....................15
Figure 2-6 Damped response: P2280 = 0.20; P2285 = 0.15 s...............................................................15
Figure 2-7 Response to 5 Hz step: L = 100 ms .....................................................................................16
Figure 2-8 Response to 5 Hz step: T = 700 ms .....................................................................................17
Figure 2-9 Step Response in PI control with P2280 = 9.84 and P2285 = 0.30 ......................................17
Figure 2-10 PI Basic Block Diagram ........................................................................................................19
Figure 2-11 Frequency Ramp Down ........................................................................................................20
Figure 2-12 DC Braking ...........................................................................................................................20
Figure 2-13 Compound Braking...............................................................................................................21
Figure 2-14 Derating with Temperature ...................................................................................................22
Figure 2-15 Derating with Altitude............................................................................................................24
Figure 2-16 Power Losses .......................................................................................................................38
Table 2-1 Current Limit and Overload.....................................................................................................8
Table 2-2 Measured Current Monitoring Accuracy .................................................................................9
Table 2-3 Trip Levels ............................................................................................................................11
Table 2-4 Maximum Cable Lengths ......................................................................................................23
Table 2-5 Derating with Switching Frequencies....................................................................................25
Table 2-6 Cubicle Calculations .............................................................................................................26
Table 2-7 BiCo Connections (r0019 to r0054) ......................................................................................31
Table 2-8 BiCo Connections (r0055 to r1119) ......................................................................................32
Table 2-9 BiCo Connections (r1170 to r2050) ......................................................................................33
Table 2-10 BiCo connections (r2053 to r2294) .......................................................................................34
Table 2-11 Acoustic Test Results ...........................................................................................................35
Table 2-12 Single Phase 230V Connection ............................................................................................36
Table 2-13 Three Phase 230V Connection.............................................................................................36
Table 2-14 Three Phase 400V Connection.............................................................................................37
MICROMASTER 420 Reference Manual
Issue A1
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