34
5.4 Adjusting Speed Balance
Cont'd from previous page.
WARNING: Rotate the KV and DER trimmers counter- clockwise (ccw) when using Hall Effect Signal
Feedback.
Note: The MiniAx frequency/voltage constants are pre-set according to series, for the Encoder Feedback. It
is possible (in some cases) that such constants require modifications. For eventual information contatact
CONTROL TECHNIQUES,
The drive is delivered with a Zero speed adjustment for Encoder feedback.
Re-adjust the Bil trimmer to correct eventual sistem offset. (You may compensate +/- 200mV from referenc
input)
With the reference input at Zero turn the trimmer until the motor completely stops.
5.5 Nominal Current Adjustment
The drive is furnished pre-adjusted to give max. current according to size (R IN not mounted). To reduce
and adopt to motor characteristics, insert a R IN resistor in the adjustment base. the table with obtainable
curent re-entry in current (A) is shown below:
5.6 Peak current adjustment
To reduce the value of peak current "in the velocity mode",it’s necessary to mount RIP on the header (see
fig. 1) located inside of the drive.
For calculations use the following formula:
RIP=G x 48,7 / 1 - G
Where: G = RIP Request current
RIP drive current
Example: IPk motor 5A ,Drive 10/20A
RIP = 0,25 x 48,7 / 1 - 0,25 =16,2 Kohm
VEL
KV
BI L
Value RIN
in Kohm
* 18 8.2 4.7 3.3 2.2 1.8 1.2 1 0.82
5/10 (A)
5 4,6 4,2 3,8 3,6 3 2,8 2,4 2.2 2
10/20(A)
10 9.3 8.5 7.7 7.1 6.2 5.8 5 4.6 4.2
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