AXIS#.MOTOR.KE
Description
AXIS#.MOTOR.KE is the back EMF constant for the motor. The back EMF constant defines how much voltage is generated at the motors coils. The relationship between AXIS#.MOTOR.KE and speed is described by the following equation:
Coil Voltage = AXIS#.MOTOR.KE * AXIS#.VL.FB
AXIS#.VL.FB is in units of krpm for rotary motors.
The maximum speed for interior permanent magnet motors (IPM) is determined by AXIS#.MOTOR.KE and VBUS.VALUE. An overspeed fault is generated if AXIS#.MOTOR.TYPE is set to 6 (IPM) and AXIS#.VL.FB * AXIS#.MOTOR.KE exceeds VBUS.VALUE.
-
- This parameter is automatically configured for Kollmorgen motors when AXIS#.MOTOR.AUTOSET = 1 and can be modified while AXIS#.MOTOR.AUTOSET = 1 if its AXIS#.MOTOR.DISAUTOSET index = 1.
-
-
This parameter is required to be configured for AXIS#.MOTOR.TYPE = 6
Context
For more information see Motor.
Versions
| Action | Version | Notes |
|---|---|---|
| Implemented | 02-00-00-000 |
General Information
|
Type |
Read/Write |
|
Units |
Vpeak/krpm for Rotary Motors |
|
Range |
0 to 100,000 |
|
Default Value |
20 |
|
Data Type |
Float |
|
See Also |
N/A |
|
Stored in Non-Volatile Memory |
Yes |
Variants Supported
All variants are supported.
Fieldbus Information
|
Command |
Index |
SubIndex |
Data Type |
Units |
Float Scale |
Access |
PDO Mappable |
|---|---|---|---|---|---|---|---|
|
AXIS1.MOTOR.KE |
500bh |
13h |
Unsigned32 |
- |
1000:1 |
Read/Write |
No |
|
AXIS2.MOTOR.KE |
510bh |
13h |
Unsigned32 |
- |
1000:1 |
Read/Write |
No |
|
ID |
Instance |
Attribute |
Name |
Data Type |
Access |
User Mappable |
|---|---|---|---|---|---|---|
|
6241 |
1 |
6241 (0x1861) |
AXIS1.MOTOR.KE |
Unsigned32 |
Read Only |
Yes |
|
71777 |
2 |
6241 (0x1861) |
AXIS2.MOTOR.KE |
Unsigned32 |
Read Only |
Yes |
|
Parameter |
PNU |
Data Type |
Access |
Units |
|---|---|---|---|---|
|
AXIS#.MOTOR.KE |
6241 |
Float |
Read Only |
- |
