Trinamic SIXpack 2, Руководство пользователя

Страница: 34 / 50

SIXpack 2 – Manual (V1.10 / January 29
th
, 2010) 34
6.7 Control of motor current
To provide an always sufficient torque or holding torque with the lowest use of power an individual configuration
of the motor currents is possible.
The maximum coil current
IMax
is set with the command SetMaxCurrent (CMD $10). Please check the DIP-switches
of the SIXpack 2, also (refer to 5.2.7).
Also the command
SetCurrentControl (CMD $11) provides the possibility to adapt to the actual movement. In the
variables a percentage grading can be defined.
EXAMPLE:
Current % of max current Variable setting
while acceleration 100 AccelerationCurrent = 0
while at constant velocity 75 RunningCurrent = 1
at target position 38 StandigCurrent = 3
after expiration of
PowerDownDelay 9 PowerDownCurrent
= 7
To lower the current consumption unused motors should be set to the value of a power down current of zero
(
PowerDownCurrent
= 8).
Figure 6.7: Ramp depending current setting