CANopen communication
Printed in the Federal Republic of Germany
©
TR-Electronic GmbH 2007, All Rights Reserved
05/16/2007
TR - EMO - BA - DGB - 0013 - 00
Page 217 of 260
Subindex 6: Ballast voltage [mV]
Data
type
UNSIGNED32
Attribute
rw
Default
4000
Min
0
Max
2
32
-1
PDO
mapping
Yes
Description
This is the surplus voltage above the max. bus voltage which
is required to switch the ballast resistors on completely. A
value of 4000 mV prevents switching peaks in the supply
lines.
Subindex 7: Stator inductivity [µH]
Data
type
UNSIGNED32
Attribute
rw
Default
200
Min
0
Max
2
32
-1
PDO
mapping
Yes
Description
The proportional gains of the PI current controller are set by
the DC voltage, divided according to stator inductivity, in
order to maintain the necessary switch-off frequency of the
closed control loop.
Depending on the motor type, this inductivity can fall to 1/3 if
the stator current is increased from 0 to the nominal value. In
order to prevent gains that are too high and cause vibrations,
the stator inductivity should be measured at maximum
current.