Torque Control Macro; Default Parameter Settings For The Torque Control Macro - ABB ACS880 Firmware Manual

160 Application macros

Torque control macro

This macro is used in applications in which torque control of the motor is required.
These are typically tension applications, where a particular tension needs to be
maintained in the mechanical system.
Torque reference is given through analog input AI2, typically as a current signal in
the range of 0...20 mA (corresponding to 0...100% of rated motor torque).
The start/stop signal is connected to digital input DI1. The direction is determined
by DI2. Through digital input DI3, it is possible to select speed control (EXT1)
instead of torque control (EXT2). As with the PID control macro, speed control can
be used for commissioning the system and checking the motor direction.
It is also possible to change the control to local (control panel or PC tool) by
pressing the Loc/Rem key. By default, the local reference is speed; if a torque
reference is required, the value of parameter
changed to Torque.
A constant speed (by default, 300 rpm) can be activated through DI4. DI5 switches
between acceleration/deceleration time sets 1 and 2. The acceleration and
deceleration times, as well as ramp shapes, are defined by parameters 23.12...23.19.
￭

Default parameter settings for the Torque control macro

Below is a listing of default parameter values that differ from those listed for the
Factory macro in
Parameter
19.11 Ext1/Ext2 selection
19.14 Ext2 control mode
20.2 Ext1 start trigger type
20.6 Ext2 commands
20.7 Ext2 start trigger type
20.8 Ext2 in1 source
20.9 Ext2 in2 source
20.12 Run enable 1 source
22.22 Constant speed sel1
23.11 Ramp set selection
26.11 Torque ref1 source
31.11 Fault reset selection
Parameter listing (page
19.16 Local control mode
174).
Torque control macro default
DI3
Torque
Level
In1 Start; In2 Dir
Level
DI1
DI2
DI6
DI4
DI5
AI2 scaled
Not selected
should be