Siemens MICROMASTER 440 - Manual (Page 50)

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.
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.
100
p0305
p0305) 4 (r0209, min
p0640 max ⋅
⋅
=
CO: Upper torque limit
Specifies fixed value for upper
torque limitation.
P1520
max
P1520
def
r0333 1.5 ⋅ =
r0333 4 ⋅ ± =
CO: Lower torque limit
Enters fixed value of lower
torque limitation.
P1521 max
P1521 def
r0333 1.5 ⋅ − =
r0333 4 ⋅ ± =
f
1
~
Torque limitation
Resultant
torque limit
Power
limitation
|f
act
r1526
r1527
Stall
limitation
p1530
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.
P1530
def
P1530
max
0307 P 3 ⋅ =
0307 P 5 . 2 ⋅ =
Regenerative power limitation
Enters fixed value for the max. permissible
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.