Analog Current Mode - Allen-Bradley Ultra1500 2092-DA1 User Manual

5-44 Ultra1500 Application Examples
Block/Switch Definitions:
1
2
3
4
5
6
Publication 2092-UM001D-EN-P — July 2005

Analog Current Mode

Figure 5.25 shows the block diagram for the analog current mode of the
Ultra1500:
Figure 5.25
Analog Current Mode Block Diagram
Analog Cu rrent
Command (Volts)
2
+
K
c
+
1
Analog Current
Command
Offset (V olts)
Mode Configuration : Analog : Current Command Offset
Mode Configuration : Analog : Current Scale
Main Drive Window : Command Polarity
Main Drive Window : Current Limits; Main Drive Window : Stopping Functions : Maximum Stopping Current
Tuning Window : Main Current Regulator Gains : Low Pass Filter Bandwidth
Tuning Window : Main Current Regulator Gains : Resonant Frequency Suppression
Block/Switch definitions shown in Figure 5.25 refer to the Ultraware parameter names where applicable.
The current command limit is set to the minimum of the following:
•
Positive / Negative Internal Current Limit,
•
Positive / Negative External Current Limit,
•
Stopping Current (if active), and
•
Drive Peak / Motor Peak Current Rating.
4
-1
3
Curren t
1
Cmd
Limit
Curren t
Comma nd to
Curren t
5 6
Reg ulator
Current
Curren t
Cmd
Cmd
Low Pass
Notch Filter
Filter