Drive Parameter Settings; Ramp Parameters - ABB ACS880 Series Manual

Index Name
92.10 Pulses/revolution
92.17 Accepted pulse freq
of encoder 1

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.
No. Name
31.22 STO indication
run/stop
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.
No. Name
90.41 Motor feedback
selection
90.45 Motor feedback
fault
92.21 Encoder cable
fault mode

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.
Example value
2048
300 kHz
1)
Description
Default value
Warning/Warning 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.
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.
Value Description
Encoder 1 Selects the motor speed feedback value used during motor
control.
Warning Selects how the drive reacts to loss of measured motor
feedback.
To configure the drive to trip on encoder faults, set this
parameter to value Fault. For more information, see the
firmware manual.
A+, A-, B+, B-, Z+, Z- Selects which encoder cable channels and wires are mon-
itored for wiring faults.
Parameter settings 49
Description
Sets the number of HTL pulses per revolu-
tion for safety encoder 1.
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.
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).