ABB ACS850 series, Руководство пользователя

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Parameters 167
19.09 Speed TripMargin Defines, together with 20.01 Maximum speed and 20.02
Minimum speed , the maximum allowed speed of the motor
(overspeed protection). If actual speed ( 01.01 Motor speed
rpm ) exceeds the speed limit defined by parameter 20.01 or
20.02 by more than the value of this parameter, the drive trips
on the OVERSPEED fault.
Example: If the maximum speed is 1420 rpm and speed trip
margin is 300 rpm, the drive trips at 1720 rpm.
0.0 … 10000.0 rpm Overspeed trip margin. 10 = 1 rpm
19.10 Speed window Defines the absolute value for the motor speed window
supervision, i.e. the absolute value for the difference between
the actual speed and the unramped speed reference (
01.01
Motor speed rpm - 03.03 SpeedRef unramp ). When the motor
speed is within the limits defined by this parameter, signal
02.24 FBA main sw bit 8 (AT_SETPOINT) is 1. If the motor
speed is not within the defined limits, bit 8 is 0.
0 … 30000 rpm Absolute value for motor speed window supervision. 1 = 1 rpm
19.13 Speed fbk fault Selects the action in case of speed feedback data loss.
Note: If this parameter is set to Warning or No , a loss of
feedback will cause an internal faulted state. To clear the
internal fault and to reactivate speed feedback, use
parameter
90.10 Enc par refresh .
Fault Drive trips on a fault (OPTION COMM LOSS, ENCODER 1/2,
ENCODER 1/2 CABLE or SPEED FEEDBACK depending on
the type of problem). 0
Warning 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 the problem). 1
No 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
90.10 Enc
par refresh .
2
No. Name/Value Description FbEq
Speed trip margin
Speed trip margin
Speed
Time
20.01
20.02