Field-Orientated Control - Siemens MICROMASTER 440 Operating Instructions Manual

6 Commissioning
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.
Motor overload factor [%]
p0640 = ...
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.
p0640 =
max
CO: Upper torque limit
P1520 = ...
Specifies fixed value for upper
torque limitation.
P1520
def
P1520
max
CO: Lower torque limit
P1521 = ...
Enters fixed value of lower
torque limitation.
=
P1521
def
=
P1521
max
Motoring power limitation
P1530 = ...
Defines fixed value for the max. permissible
motoring active power.
P1530
def
P1530
max
Regenerative power limitation
P1531 = ...
Enters fixed value for the max. permissible
regenerative active power
=
P1531
def
=
P1531
max
50
⋅
min (r0209, 4 p0305)
⋅ 100
p0305
FC-spec.
torque limit
= 1.5 ⋅
r0333
= ± 4 ⋅
r0333
FC-spec.
− 1.5 ⋅ r0333
± 4 ⋅
r0333
= 2 ⋅
5 . P 0307
= 3 ⋅ P 0307
⋅
- 2.5 P0307
- ⋅ 3 P0307
Resultant
Power
|M|
limitation
r1526
r1527
p1530
p1531
Constant
torque
FC-spec.
Power limitation (motoring, regenerative)
P
M =
⋅ ⋅ π
2 f
p1531
FC-spec.
p1530
Issue 10/06
150.0 %
Stall
limitation
Torque limitation
1
1
~ ~
2
f
f
Constant Stall
f
stall
power power
M
p1530
p1531
MICROMASTER 440
Operating Instructions (Compact)
|f
|
act
f