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4.4
Automatic Average Current Density Control with Current Limit Adjustment Procedure
All converters are shipped in the voltage mode of control unless otherwise specified at the time of
order. The automatic average current density control must be used with the voltage mode of control
for proper operation.
1. Turn the "current density adjust" pot completely counterclockwise. This pot is located on the
front panel of integral control units or inside the remote cabinet for remote control units. To
adjust, remove the locknut and turn the pot with a screwdriver completely counter clockwise.
Do not replace the locknut until the remainder of the adjustment is complete.
2. The "limit adjust" pot should be turned completely clockwise. This pot is located on the front
panel of the integral control units or inside the remote cabinet of the remote control units. To
adjust, remove the locknut, turn the pot with a screwdriver, replace and tighten the locknut.
3. Turn the "output adjust" knob completely counterclockwise.
4. Energize the converter by pushing the start button.
5. With the smallest anticipated work load in the tank, turn the "output adjust" knob clockwise to
produce the desired current output for that work load.
6. Increase the work load in the tank to the maximum expected load Although the current has
increased, the total current will be less than desired for that load.
7. Turn the "current density adjust" knob clockwise until the proper current is reached.
8. Repeat steps 5, 6, and 7 to minimize the current difference from small to large loads.
9. Replace and tighten locknut on "current density adjust" pot.
NOTE
: This control works well for repeated loads of the same type. A change
in size and shape of the workload may require readjustment of the pot settings.
4.5
Automatic Current Control with Voltage Limit Adjustment Procedure
All converters are shipped in the voltage mode of control unless otherwise specified at the time of
order. Refer to
Section 4.6
entitled
Conversion to Current Mode of Control
for instructions to
change from voltage mode to current mode.
1. The "current density adjust" pot must be turned completely counterclockwise for automatic
current operation. This pot is located on the front panel of integral control units or inside the
remote cabinet for remote control units. To adjust, remove the locknut and turn the pot with a
screwdriver completely counterclockwise, then replace and tighten the locknut.
2. The "limit adjust" pot should be turned completely clockwise. At this setting, the converter
voltage output will be limited at its full rated value. If a lower voltage limit point is desired, turn
the pot counterclockwise to the desired setting. For example, setting the pot at midpoint will
limit the voltage to approximately half the rated output voltage. This pot is located on the front
panel of integral control units or inside the remote cabinet for remote control units. To adjust,
remove the locknut, turn the pot to the desired setting with a screwdriver, then replace and
tighten the locknut.
3. Turn the "output adjust" knob completely counterclockwise.
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