Sorensen SFA Series, Operation Manual

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Sorensen SFA Series Operation
4. Press and hold the Set/Reset Overcurrent Protection pushbutton on the
front panel and observe the reading on the current display. This is the
present setting of the OCP limit. The factory default setting is
approximately 110% of the maximum rated output of the supply.
5. While holding down the Set/Reset button, use a small adjustment
screwdriver to adjust the OCP setting by turning the 4-turn recessed
adjust potentiometer counterclockwise. As you adjust the
potentiometer the reading on the current display should decrease
(increase as you adjust in a clockwise direction).
6. Set the OCP to about 80-90% of the maximum rated output current and
note the OCP current value. Release the Set/Reset pushbutton.
7. Rotate the Current knob clockwise until the current display indicates
you are about 2-3% below the OCP voltage value noted above.
8. Slowly continue to increase the output of the supply until you exceed
the value of the OCP setting. At this point the OCP light should turn on
and the output of the supply will turn off causing the output to go to 0
volts (as indicated on the voltage display).
9. Turn the Current knob fully counterclockwise, then press and hold the
Set/Reset pushbutton until the OCP light turns off.
10. Reset the OCP setting as appropriate for your application per steps 4
and 5 above. If you do not chose to use OCP, then the OCP adjust
may be set fully clockwise to approximately 110% of the rated output
current of the supply.
If OCP mode did not function as indicated above, recheck your setup and
perform the check again. If the function continues to fail, contact the factory for
assistance.
3.2.5
A
NALOG
C
ONTROL
C
ONNECTOR
(J1)
The ANALOG CONTROL connector on the rear panel allows the unit to be
configured for different operating configurations: local and remote current
programming, current and voltage output monitoring, output enable/disable, etc.
The setup and operating requirements of each configuration are provided in
Sections 3.3 through 3.7.
I
SOLATED
A
NALOG
C
ONTROL
(O
PTION
)
The Isolated Analog Control uses the same Analog Control connector (J1).
This option fully isolates remote control signals and allows control of units not
connected to a common ground. Control ground is isolated from power ground,
which protects against potential damage from systems with high electrical noise
or large ground loop currents.
NOTE: Some standard analog programming signals may not be available with
this option. See Table 1.2.2 for details.
M550292-01 Rev C 3-7