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

5-42 Ultra1500 Application Examples
Command (Volts)
Publication 2092-UM001D-EN-P — July 2005
The velocity command limit is set to the minimum of the following:
•
Zero if the velocity command is in the direction of an active overtravel
limit,
•
Manual Velocity Limit (if activated),
•
Analog Velocity Limit (if activated), and
•
Motor rated speed.
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 activated), and
•
Drive Peak / Motor Peak Current Rating.

Analog Velocity Mode

Figure 5.22 shows the block diagram of the analog velocity mode for the
Ultra1500:
Figure 5.22
Analog Velocity Mode Block Diagram
Analog Velocity
2
+
K
v
+
1
Analog Vel ocity
Comma nd
O ffset (Volts)
Block/Switch Definitions
1 Mode Configuration : Analog : Velocity Command Offset
2 Mode Configuration : Analog : Velocity Scale
3 Main Drive Window : Command Polarity
4 Main Drive Window : Speed Functions : Zero Clamp
Digital Inputs : Zero Speed Clamp Enable
5 Main Drive Window : Accleration Limits
6 Tuning : Main Velocity Regulator Gains : Low Pass Filter Bandwidth
Block/Switch definitions shown in Figure 5.22 refer to the Ultraware parameter names where applicable.
-1
3
1 0.0
5 6
4
Accel
Ve loci ty
L imits
Comma nd
Filte r
Velo city
Command
To Velocity
Regulator