ABB FSO-21, User Manual

Page: 440 / 540

440 Parameters
Est switch not active
load
With some restrictions, the FSO module
sends a warning to the drive and starts to
use an estimated value of the motor speed
until the failure is fixed.
For more information, see section
Motor
speed feedback on page 44 .
Note : Do not use this selection in
applications with active load. See section
Safe speed estimate on page 44 .
Note: Safe speed estimate cannot be used
with a DCS880 drive.
S_ENCGEN.
14
Enc speed cross
comp tolerance
Sets the encoder speed cross comparison
tolerance. This defines how much the motor
shaft speed can change within 1 ms. If the
tolerance is exceeded, the FSO module
reaction depends on the
S_ENCGEN.11
selection.
Note: This parameter is used for the
encoder diagnostic. It defines how large the
difference between the speed information
from channel A and B of the encoder can be.
If the difference between these two values is
greater than the value set to this parameter,
FSO will safely stop the system (STO).
The suitable value depends on the
configuration (motor / load). Typically this
value is set to 2-10 rpm; a very low value will
cause an encoder fault (A7D8) whereas too
high a value will prevent encoder diagnostic
related to this parameter.
0.0 rpm
0.0 …500.0 rpm Speed
S_ENCGEN.
41
Gear numerator
encoder 1
Sets the rotation direction for the safety
encoder. With this parameter, you can
change the rotation direction of the motor. 1
1 Positive direction.
-1 Negative direction.
41
Enc module settings Parameters for the safety encoder interface
module
91.11 Module 1 type Sets the type of the safety encoder interface
module 1. None
None The safety encoder interface module is not
in use.
FSE-31 The type of the safety encoder interface
module is FSE-31.
Index Name/Value Description Factory
default