Page 49
Initial Start-Up con’t
1. Adjust Speed pot (enclosed unit) approximately 1/3 turn clockwise (from full
CCW position)
Power can now be Applied !
2. Start drive. Run light (red) should be illuminated.
3. Slowly adjust Speed 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. If the motor rotates in the wrong
direction, stop drive, REMOVE AC POWER and then reverse the field leads, F1
and F2. Re-apply power and repeat this step.
4. Stop Drive and Turn off AC Power.
Basic Setup for Current (Torque) Regulator
1. Only do the next Step if the Drive is to be configuration as of Current or Torque
Regulator. Otherwise Drive can now be set-up for terminal strip connections as
required by the particular application. Refer to pages 30 for typical Terminal
Strip Connections.
2. If the drive is to be set-up as a Current (torque) Regulator, set jumper JP1 and
JP3 to “CURR” position .
3. The standard speed command input (TB2-#7) is now the drive current reference.
The accel / decel time (fixed) on the control board will now control the rate of
change of current.
Note that the drive is now controlling motor torque and NOT speed, therefore if
the current reference is set to a higher level than the torque required by the load,
the motor will run to speeds in excess of rated motor speed. In applications where this
over-speed condition can occur (such as a web break in a simple re-winder) an
external over-speed protection device must be added to the system.
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