ABB ACS850 series, Руководство пользователя

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168 Parameters
19.14 Speed superv est Defines an activation level for encoder supervision. See also
parameters
19.15 Speed superv enc and 19.16 Speed fb filt t .
The drive reacts according to 19.13 Speed fbk fault when:
• the estimated motor speed ( 01.14 Motor speed est ) is
greater than 19.14 AND
• the filtered encoder speed* is lower than 19.15 .
Speed feedback supervision can be disabled by setting this
parameter to the maximum speed.
0…30000 rpm Activation level for encoder supervision. 1 = 1 rpm
19.15 Speed superv enc Defines an activation level for the encoder speed used in
encoder supervision. See parameter
19.14 Speed superv est .
0…30000 rpm Activation level for the encoder speed. 1 = 1 rpm
19.16 Speed fb filt t Defines a time constant for the encoder speed filtration used
in encoder supervision. See parameter
19.14 Speed superv
est .
0…10000 ms Time constant for the encoder speed filtration. 1 = 1 ms
20
20 Limits
Drive operation limits. See also section Speed controller
tuning on page 61 .
20.01 Maximum speed Defines the allowed maximum speed. For safety reasons,
after ID run this parameter is set to a 1.2 times bigger value
than the nominal motor speed (parameter
99.09 Mot nom
speed ).
0 … 30000 rpm Maximum speed. 1 = 1 rpm
20.02 Minimum speed Defines the allowed minimum speed. For safety reasons,
after ID run this parameter is set to a 1.2 times bigger value
than the nominal motor speed (parameter
99.09 Mot nom
speed ).
-30000 … 0 rpm Minimum speed. 1 = 1 rpm
No. Name/Value Description FbEq
01.14 **
Speed
19.14
99.09
19.15
Filtered encoder
speed*, **
*Filtered outcome of encoder 1/2 speed. Parameter 19.16
Speed fb filt t defines the filtration co-efficient for this
speed.
**In normal operation, the filtered encoder speed is equal
to signal
01.14 Motor speed est .