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ABB ACS850 User Manual

ABB ACS850
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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

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ABB ACS850 Specifications

General IconGeneral
SafetySTO (Safe Torque Off)
CommunicationCANopen
EnclosureIP21
Output VoltageUp to 1000 V DC
Protection FeaturesOvercurrent, Overvoltage, Undervoltage
Cooling MethodAir or liquid cooling
Input Voltage380 to 690 V AC

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