108 EM-ABS-01 for ACU 03/12
8.4.10 SSI: Sampling interval
SSI frequency encoders often use a samplin
rate in the millisecond ran
e. In order for
the evaluation in the device to work correctly, the samplin
rate of the SSI absolute
value encoder must be set up. If the samplin
rate of the encoder cannot be ad
usted,
use the next hi
her, available settin
. The parameter value is ad
usted as a multiplie
of 125 us.
Note: Not all steps from 0 to 240 are available. The selection list limits the
available options to reasonable settings.
Parameters Settings
No. Description Min. Max. Factory set-
ting
1268 SSI: Sampling interval 0 240 0
Attention: For a
ood positionin
behavior, the samplin
rate is to be less than 1
ms.
In the case of hi
her samplin
rates, unwanted hi
h system vibration o
even machine dama
e may occur, if the speed and position controller are
configured improperly.
In the case of hi
h samplin
rates (> 2 ms), reduce the dynamics of the
system via the speed controller and the position controller.
Positionin
accuracy will be lower in the case of hi
h samplin
rates. For
precise applications, use encoders with low sampling rates.
8.4.11 Gear factor speed sensor 2
If the speed sensor is coupled to the motor via one or more
ears, the transmission
ratio between the motor and the encoder must be configured via
C2 Gear Facto
umerato
513 and EC2 Gear Factor Denominator 514.
Parameters Settings
No. Description Min. Max. Factory set-
ting
513 EC2 Gear Factor Numerator -300.00 300.00 1.00
514 EC2 Gear Factor Denominator 0.01 300.00 1.00
514
513
shaft encoder EC2 the of sRevolution
shaftMotor the of sRevolution
rDenominato Factor Gear 2 EC
Numerator Factor Gear 2 EC
=
Note:
Gear factors EC2 Gear Factor Numerator 513 and
C2 Gear Facto
enominato
514 must always be referred to the motor.
Note: In the case of linear encoders, this value must be set according to chap-
ter
6.6.
To Next Page
Loading...
Need help?
General
