ABB ACS880-17 - Drive Parameter Settings; Ramp Parameters

DescriptionExample valueNameIndex
Sets the number of HTL pulses per revolu-
tion for safety encoder 1.
2048Pulses/revolution92.10
Adjust the default value to meet the safety
encoder in use. Make sure that the value is
according to the encoder nameplate.
Sets the maximum pulse frequency range
of encoder 1.
300 kHzAccepted pulse freq
of encoder 1
92.17
Adjust the default value to meet the motor
and safety encoder in use. You can use this
formula to define the value:
r_max · ppr_enc + 10%, where
• r_max = the maximum motor speed used
in the application (or the motor nominal
speed)
• ppr_enc = Pulses/revolution of the safety
encoder (parameter 92.10).
Drive parameter settings
This section shows the drive parameter settings related to the safety function in the ACS880
primary control program.
The table that follows shows the parameters that are set at the factory.
Description
Default value
1)
NameNo.
Selects which indications are given when one or both Safe
torque off (STO) signals are switched off or lost. Warn-
ing/Warning is the recommended setting.
Warning/WarningSTO indication
run/stop
31.22
Note: ABB recommends that you do not set this parameter
to Fault/Fault, Fault/Warning, or Fault/Event. If you use these
settings, the drive will trip on a fault each time that the FSO
module activates the drive STO function.
1)
Value set by ABB at the factory for the default design.
The table that follows shows the parameters that you must set when you use a safety
encoder.
DescriptionValueNameNo.
Selects the motor speed feedback value used during motor
control.
Encoder 1Motor feedback
selection
90.41
Selects how the drive reacts to loss of measured motor
feedback.
WarningMotor feedback
fault
90.45
To configure the drive to trip on encoder faults, set this
parameter to value Fault. For more information, see the
firmware manual.
Selects which encoder cable channels and wires are mon-
itored for wiring faults.
A+, A-, B+, B-, Z+, Z-Encoder cable
fault mode
92.21
Ramp parameters
Set these parameters only for the SLS function.
When the SLS function is activated and the motor speed is above the SLS limit positive,
the drive decelerates the motor speed to the SLS limit.
Parameter settings 49