User manual

Publication 2092-UM001D-EN-P — July 2005
5-42 Ultra1500 Application Examples
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
Block/Switch definitions shown in Figure 5.22 refer to the Ultraware parameter names where applicable.
+
+
4
Analog Velocity
Command (Volts)
K
v
Analog Velocity
Command
Offset (Volts)
0.0
Velocity
Command
To Velocity
Regulator
Accel
Limits
Velocity
Command
Filter
2
5 6
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
3
1
-1
1