Siemens 440 User Manual
6 Commissioning
Issue 10/06
MICROMASTER 440
50
Operating Instructions (Compact)
6.4.17 Field-orientated
control
Limitations
To avoid a premature limitation the limits of the torque (P1520, P1521) and power
(P1530, P1531) should be set to the maximum value, if the application allows it.
(P1530, P1531) should be set to the maximum value, if the application allows it.
Motor overload factor [%]
Defines motor overload current limit in [%] relative to p0305 (rated motor current). Limited to
maximum inverter current or to 400 % of rated motor current (p0305), whichever is the
lower.
Defines motor overload current limit in [%] relative to p0305 (rated motor current). Limited to
maximum inverter current or to 400 % of rated motor current (p0305), whichever is the
lower.
100
p0305
p0305)
4
(r0209,
min
p0640
max
⋅
⋅
=
CO: Upper torque limit
Specifies fixed value for upper
torque limitation.
torque limitation.
P1520
max
P1520
def
r0333
1.5
⋅
=
r0333
4
⋅
±
=
CO: Lower torque limit
Enters fixed value of lower
torque limitation.
torque limitation.
P1521
max
P1521
def
r0333
1.5
⋅
−
=
r0333
4
⋅
±
=
f
1
~
Torque limitation
Resultant
torque limit
Power
limitation
|f
act
r1526
r1527
r1527
Stall
limitation
p1530
p1531
p1531
f
1
~
2
Constant
torque
f
stall
Constant
power
|
|M|
Stall
power
Motoring power limitation
Defines fixed value for the max. permissible
motoring active power.
motoring active power.
P1530
def
P1530
max
0307
P
3
⋅
=
0307
P
5
.
2
⋅
=
Regenerative power limitation
Enters fixed value for the max. permissible
regenerative active power
regenerative active power
P1531
max
P0307
3
-
⋅
=
P1531
def
P0307
2.5
-
⋅
=
M
f
f
2
P
M
⋅
π
⋅
=
Power limitation (motoring, regenerative)
p1530
p1531
p1530
p1531
p0640 = ...
150.0 %
P1520 = ...
P1521 = ...
P1530 = ...
P1531 = ...
FC-spec.
FC-spec.
FC-spec.
FC-spec.