ABB ACSM1 Firmware Manual page 120

120
22.08 SPEED TRIPMARGIN
Defines, together with
speed of the motor (overspeed protection). If the actual speed
limit defined by parameter
on fault OVERSPEED.
Example: If the maximum speed is 1420 rpm and speed trip margin is 300 rpm, the drive trips at
1720 rpm.
Speed
0...10000 rpm
22.09 SPEED FB FAULT
Selects the action in case of speed feedback data loss.
Note: If this parameter is set to
state. To clear the internal fault and to reactivate speed feedback, use parameter
REFRESH.
(0) Fault
(1) Warning
(2) No
Parameters and firmware blocks
FW block:
20.01 MAXIMUM SPEED
20.01 or 20.02
22.08 SPEED TRIPMARGIN
20.01 MAXIMUM SPEED
t
20.02 MINIMUM SPEED
22.08 SPEED TRIPMARGIN
Speed trip margin.
FW block:
(1) Warning
Drive trips on a fault (OPTION COMM LOSS, ENCODER 1/2,
ENCODER 1/2 CABLE or SPEED FEEDBACK depending on the type
of problem).
Drive continues operation with open loop control and generates an
alarm (OPTION COMM LOSS, ENCODER 1/2 FAILURE, ENCODER
1/2 CABLE or SPEED FEEDBACK depending on the type of
problem).
Drive continues operation with open loop control. No faults or alarms
are generated. The encoder speed is zero until encoder operation is
reactivated with parameter
SPEED FEEDBACK (see above)
and 20.02 MINIMUM
(1.01 SPEED
by more than 22.08 SPEED
SPEED FEEDBACK (see above)
or (2) No, a loss of feedback will cause an internal faulted
90.10 ENC PAR
SPEED, the maximum allowed
ACT) exceeds the speed
TRIPMARGIN, the drive trips
90.10 ENC PAR
REFRESH.