5 adaptation of the resolver evaluation dynamics, 6 parameterisation of an unknown hiperface encoder, Adaptation of the resolver evaluation dynamics – Lenze E94AxPExxxx User Manual
Page 293: Parameterisation of an unknown hiperface encoder, 7encoder evaluation
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
293
7
Encoder evaluation
7.3
Parameter setting
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7.3.5
Adaptation of the resolver evaluation dynamics
The resolver evaluation of the controller is adapted to the resolver types mounted in Lenze motors
and offers a good compromise between the dynamic performance and interference suppression. If
the resolver is used as a speed feedback system, the dynamic performance of the resolver evaluation
determines, among other things, the maximum speed controller gain by means of which stable
operation is possible.
In a system with an EMC-compliant structure (low interference), you can increase the dynamic
performance of the resolver evaluation in
without a loss in quality in the speed signal. By
increasing
, the evaluation is rendered more dynamic, and thus the speed controller gain Vp
(
) is also increased without leaving the stable operating range.
The acceleration of the evaluation depends on the cable length, the resolver, and the quality of the
electrical shielding. In many cases, a setting of
= 300 % is possible which can double the
speed controller gain. The higher gain in the speed controller may reduce following errors.
If an SM301 safety module is used to monitor the equipment, a parameterised value in
of >
500 % can cause incorrect triggering of the safety module. A value which is too high must be
decreased in order to eliminate incorrect triggering.
See also:
Servo control (SC):
Optimising the speed controller
Sensorless vector control (SLVC):
Optimising the speed controller
7.3.6
Parameterisation of an unknown Hiperface encoder
Application: A Hiperface encoder is to be used with the controller, the current firmware of which has
not (yet) been stored permanently.
How to parameterise a Hiperface encoder unknown to the controller:
1. Determine the type code of the encoder.
• If the encoder has already been connected and read out, the type code is indicated in
.
• Alternatively, the type code can be obtained from the manufacturer or gathered from
the documentation for the encoder.
2. Set the type code of the encoder in
• Please observe that the decimal format has to be used for the setting. The type codes
provided by the manufacturer, however, are in the hexadecimal format.
3. If a multi-turn encoder is used, set the number of displayable resolutions in
• This value can also be gathered from the documentation for the encoder.
4. Set the number of encoder increments in
.
• This point must be executed last since it initiates a renewed readout of the encoder.