Example; Programmable Analog Inputs; Settings - ABB ACS350 User Manual

102

Example

The drive runs a conveyor line. It is speed controlled but the line tension also needs
to be taken into account: If the measured tension exceeds the tension setpoint, the
speed will be slightly decreased, and vice versa.
To accomplish the desired speed correction, the user
• activates the trimming function and connects the tension setpoint and the
measured tension to it.
• tunes the trimming to a suitable level.
Speed controlled conveyor line

Programmable analog inputs

The drive has two programmable analog voltage/current inputs. The inputs can be
inverted, filtered and the maximum and minimum values can be adjusted. The
update cycle for the analog input is 8 ms (12 ms cycle once per second). The cycle
time is shorter when information is transferred to the application program (8 ms ->
2 ms).

Settings

Parameter
Group
Group
3001, 3021, 3022,
Group
Group
....42 EXT / TRIM PID
8420, 8425,
8430, 8435, 8436
...
8490, 8495, 8496
Program features
Simplified block diagram
Speed reference
Tension
measurement
Tension
setpoint
11 REFERENCE SELECT
13 ANALOGUE INPUTS
3107
35 MOTOR TEMP MEAS
40 PROCESS PID SET 1
8426
Tension measurement
Add
PID
Additional information
AI as reference source
Analog input processing
AI loss supervision
AI in motor temperature measurement
AI as PID process control reference or actual value source
AI as sequence programming reference or trigger signal
Drive rollers (pull)
Trimmed
speed reference