Siemens MICROMASTER 440 User Manual

Issue 10/06 3 Functions
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
239
3.23.1.2 Slip compensation
Parameter range: P1335
Warnings -
Faults -
Function chart number: FP6100
In the V/f characteristic operating mode the motor frequency is always lower than
the drive inverter output frequency by the slip frequency f
s
. If the load (the load is
increased from M
1
to M
2
) is increased with a constant output frequency, then the
slip s when motoring increases and the motor frequency decreases (from f
1
to f
2
).
This behavior, typical for an induction motor, can be compensated using slip
compensation P1335. This therefore eliminates the speed reduction, caused by the
load, by boosting (increasing) the drive inverter output frequency (refer to Fig.
3-98).
Without Slip compensation
M
f
∆f
f
2
f
1
M
2
M
1
With Slip compensation
M
f
∆f
f
2
f
1
M
2
M
1
f
out M1
f
out M2
Fig. 3-98 Slip compensation

Siemens MICROMASTER 440 Specifications

General

Power Range	0.12 kW to 250 kW
Output Voltage	0 V to Input Voltage
Output Frequency	0 Hz to 650 Hz
Control Modes	Vector control
Overload Capability	150% for 60 seconds
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overtemperature, Short Circuit, Ground Fault
Communication Interfaces	PROFIBUS, DeviceNet, CANopen, Modbus RTU
Enclosure Rating	IP20
Ambient Temperature	-10°C to +50°C
Input Voltage	200 V to 240 V (±10%), 380 V to 480 V (±10%)