Torque Control Macro; Default Parameter Settings For The Torque Control Macro - ABB ACS880-x04 Firmware Manual

106 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
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.
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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 listing
Parameter
No. Name
19.11 Ext1/Ext2 selection
19.14 Ext2 control mode
20.02 Ext1 start trigger type
20.06 Ext2 commands
20.07 Ext2 start trigger type
20.08 Ext2 in1 source
20.09 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
19.16 Local control mode
(page 117).
Torque control macro
default
DI3
Torque
Level
In1 Start; In2 Dir
Level
DI1
DI2
DI6
DI4
DI5
AI2 scaled
Not selected
should be changed to