ABB ACSM1 - Page 153

Parameters and firmware blocks
153
22.10 SPD SUPERV EST FW block: FAULT FUNCTIONS (see page 196)
Defines the activation level for encoder supervision. The drive reacts according to 22.09 SPEED FB
FAULT when:
• the estimated speed (1.14 SPEED ESTIMATED) is greater than 22.10 SPD SUPERV EST AND
• the filtered encoder speed* is lower than 22.11 SPD SUPERV ENC.
Encoder supervision can be disabled by setting this parameter to the maximum speed.
0…30000 rpm Activation level for encoder supervision.
22.11 SPD SUPERV ENC FW block: FAULT FUNCTIONS (see page 196)
Defines the activation level for the encoder speed used in encoder supervision. See parameter 22.10
SPD SUPERV EST.
0…30000 rpm Activation level for the encoder speed.
22.12 SPD SUPERV FILT FW block: FAULT FUNCTIONS (see page 196)
Defines the time constant for the encoder speed filtration used in encoder supervision. See parameter
22.10 SPD SUPERV EST.
0…10000 ms Time constant for the encoder speed filtration.
1.14 SPEED ESTIMATED**
Speed
22.10 SPD SUPERV EST
99.09 MOT NOM SPEED
22.11 SPD SUPERV ENC
Filtered encoder speed*, **
*Filtered outcome of encoder 1/2 speed. Parameter 22.12 SPD SUPERV FILT defines the
filtration coefficient for this speed.
**In normal operation, the filtered encoder speed is equal to signal 1.14 SPEED ESTIMATED.