PG Drives Technology VR2 series User Manual

PG DRIVES TECHNOLOGY
73
CHAPTER 3 - PROGRAMMING
SK77898/2
Current Limit Max
Current Limit Min
70 Amps
VR2 70
60 Amps
Current Foldback Temp.
80 C
50 Amps
VR2 50
20 Amps
80 C
40 Amps
VR2 40
20 Amps
80 C
60 Amps
VR2 60
40 Amps
80 C
3 - Current Foldback Temp.
This parameter sets the temperature within the control system at which the
current starts to reduce linearly.
8.2 Motor Compensation
This matches the VR2 to suit different motor types in order to achieve optimal
performance and drive control. This value should be set in accordance with the
armature resistance of the motor and all cables and connectors between the VR2
and the motor. The value is set in milli-Ohms (mW). A recommended value is:
• 70% of the (armature resistance + cables and connectors)
Motor manufacturers should be able to supply figures for armature resistance and
cable and connectors may typically be 40mW.
Example: Motor has armature resistance of 200mW
Cables and connectors are 40mW
Set Motor Compensation to 0.7 x (200 + 40) = 170mW
Never exceed the 70% relationship described above.
It is important that the maximum values in the table shown below are not exceeded
for the VR2 model you are working with.
VR2 CURRENT/TEMPERATURE RELATIONSHIP
1
2
3
Current
Temperature
80 C
The values in the table above should never be exceeded.
Doing so will invalidate the warranty and affect the long
term reliability of the control system.

PG Drives Technology VR2 series Specifications

General

Brand	PG Drives Technology
Model	VR2 series
Category	Control Systems
Language	English