User Manual EA4709 / EA4718
ElectroCraft
®
E-Mail: [email protected] www.electrocraft.com May 2009
12
4.1.1 Adjustment procedure for Hall mode
1. Potentiometer pre setting refer chapter 5.2.
2. Choose the maximum set value (e.g. 10 V). Turn the potentiometer
Scale
, until the
desired maximum speed is reached. If the red LED is flashing 5x/s the maximum
speed is reached, depending on the supply voltage. Then reduce the
Scale
potentiometer slightly till the red LED is lit off.
3. Adjust the current limiter to a value requested by you with the
I max
potentiometer. It
is of major importance that this value is lower than the maximum admissible constant
current (see motor data sheet). To measure the motor current use a current probe in
one of the motor cables with a oscilloscope or a multimeter. If the red LED is lit the
current limitation is activated.
4. Slowly raise the value of the
Gain
potentiometer. If the motor begins to work
unsteadily, to vibrate or to cause excessive noise, carefully lower the gain factor
again, until the instability symptoms have disappeared for all load selections.
5. Set the set value to zero and adjust the
Offset
potentiometer, to the standstill of the
motor.
6. The ramp function is deactivated if the potentiometer
Time
is set to the left.
