Vector Control With Speed Encoder (Vc) - Siemens MICROMASTER 440 Operating Instructions Manual

Issue 10/06
3.23.2.2

Vector control with speed encoder (VC)

Parameter range:
Warnings
Faults
Function chart number:
For Vector control with speed encoder (refer to Table 3-40), a pulse encoder
evaluation (option module) as well as a pulse encoder, e.g. encoder with 1024
pulses/revolution are required. In addition to the correct wiring, the pulse encoder
module must be activated, corresponding to the encoder type, using the parameter
range P0400 – P0494 or using the DIP switch on the module (refer to Fig. 3-104).
Type
TTL
(e.g. 1XP8001-2)
HTL
(e.g. 1XP8001-1)
Fig. 3-104
Advantages of Vector control with encoder:
The speed can be closed-loop controlled down to 0 Hz (i.e. at standstill)
Stable control behavior over the complete speed range
Constant torque in the rated speed range
When compared to closed-loop speed control without encoder, the dynamic
response for drives with encoder is significantly higher as the speed is directly
measured and is incorporated in generating the model of current components i
i .
q
MICROMASTER 440 Operating Instructions
6SE6400-5AW00-0BP0
P1400 – P1740
P0400 – P0494
-
-
FP7000
Parameter
Terminal
P0400 = 1 A
A
AN
A
P0400 = 2
B
A
AN
B
BN
Output
single ended differential
111111
101010
P0400 and DIP switch on the pulse encoder module
Track Encoder output
single ended
differential
single ended
010101
000000
3 Functions
differential
247
,
d