ABB ACS320 - General Considerations

80 Application macros
General considerations
The following considerations apply for all macros:
• When using a direct speed reference in AUTO mode, connect the speed
reference to analog input 1 (AI1), and provide the START command using digital
input 1 (DI1). In HAND/OFF mode, the control panel provides the speed reference
and START command.
• When using process PID, connect the feedback signal to analog input 2 (AI2). As
a default, the control panel sets the Setpoint, but analog input 1 can be used as
an alternate source. You can set up process PID using parameters (Group 40) or
using the PID control assistant (recommended).
The S1 Jumpers are set for AI1 External Reference and PID Feedback as either
20 mA or 10 V.
Top position: I (0[4]...20 mA, default for Al2; or -20...20 mA)
Bottom position: U (0[2]...10 V, default for Al1; or -10...10 V)
S1
AI1 AI2