Siemens 6RA70 specifications Example of a field characteristic, 10-26

PNU	Description	Value range	No. indices	See
		[Unit]	Factory	Change
		Steps	setting	(Access /
			Type	Status)

Example of a field characteristic

The example characteristic exhibits a sharper curvature (i.e. a lower degree of saturation) than the field characteristic produced by the factory setting.

Φ Motor flux in % of ratet flux

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

0

1)

P124	P129	P134		P139	100,0%	If
P123	P128	P133		P138
P122	P127	P132	P137	Field current in % of P102
P121	P126	P131	P136

r120 P125 P130 P135

1) For actual field currents If of > 100% of P102, the characteristic is extended linearly for internal calculation of the motor flux.

10-26	SIEMENS Energy & Automation
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