Page 54
nitial Start-Up con’t
I
. Adjust Current Limit Pot labeled LOC ILMT, fully counter-clockwise.
. Start drive. Run light (red) and Current limit light (yellow) are illuminated.
3. Slowly adjust cur
g motor shaft.
Verify that the motor rotates in the desired direction and that the motor slowly
accelerates to about 30% of rated speed (also note that current limit light goes out
when motor is running steady). If the motor rotates in the wrong direction, stop drive,
REMOVE AC POWER and then reverse the field leads, F1 and F2.
urn off AC Power.
1
Adjust Speed pot (enclosed unit) approximately 1/3 turn clockwise (from full CCW
position)
Adjust Jog pot (chassis unit) fully clockwise.
Power can now be Applied !
2
rent limit pot clockwise (~1/4 turn) while watchin
Re-apply power and repeat this step.
4. Stop Drive and T
Basic Setup with Tachometer Feedback
(go to step #8 if NO tachometer)
. The drive can now be set up for tachometer feedback if required.
Set JP4 to “Tach” position
Connect tachometer signal to drive (- to #19, + to #20)
Set JP8 to “Hi” if the following calculated voltage is in the range 60 to 160 Vdc.
Set JP8 to “Low” if the following calculated voltage is in the range 6.5 to 17.4
Vdc.
Tach voltage at max speed = tach volts per 1000rpm X max motor rpm
5
1000
If the calculated voltage is NOT in the ranges listed above, consult factory.
Repeat steps 1 to 2 above then proceed to step 6.
. Slowly adjust current limit pot clockwise (~1/4 turn) while watching motor shaft.
Verify that the motor rotates in the desired direction and that the motor slowly
accelerates to about 30% of rated speed (also note that current limit light goes out
when motor is running steady). If the motor continues to accelerate past ~30%
speed, tachometer is probably connected backwards. Stop drive, Turn off AC
POWER and then reverse the tachometer leads, re-apply power and repeat this
step. Stop Drive and Turn off AC Power when complete.
.
Drive can now be set-up for terminal strip connections as required by the particular
application. Refer to pages 30-32 for typical
Terminal Strip Connections.
6
7
Summary of Contents for Control Techniques Focus 3N
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