KEPCO KLP SERIES, Operator'S Manual

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3-6
KLP073008
3.2.6.1 REAL-TIME VOLTAGE/CURRENT ADJUSTMENT
Rotating the associated control will change the output voltage or current in real-time only if the
output is enabled. If the unit is in constant voltage mode (
CV indicator lit) the DC VOLTS display
shows the actual output voltage as the VOLTAGE control is rotated. Similarly, if the unit is in
constant current mode ( CC indicator lit) the DC AMPERES display shows the actual output cur-
rent as the CURRENT control is rotated.
NOTE: If the unit is in CV mode, rotating the CURRENT control will affect the current limit even
though the DC AMPERES display does not change since it is showing actual output
current. Similarly, rotating the VOLTAGE control while in CC mode affects the voltage
limit. To change the limits to a precise value, refer to PAR. 3.2.6.2, Setpoint Adjust-
ment.
3.2.6.2 SETPOINT ADJUSTMENT
NOTE: Before changing the setpoint, note the displayed setpoint. If you decide not to change
the value after rotating the control, you must manually reset the value to its original
value using the following procedure.
Tap either the VOLTAGE or CURRENT control to initiate setpoint adjustment (status display
reads SET). The previous setpoint is visible on the corresponding DC VOLTS or DC AMPERES
display.
1. Rotate the corresponding control to change the setpoint as viewed on the corresponding
LED display. Tap the adjustment control again to accept the new setting.
2. In the setpoint mode, both coarse (rotate the control) and fine (rotate while pressing control
in) adjustment is available. The coarse adjustment is approximately 100X the fine adjust-
ment resolution.
Setpoint adjust can be done with output either on or off, however the output can not be enabled
while setpoint is active (See PAR. 3.2.3).
3.2.6.3 LAST SETTING RECALL
KLP is capable of saving the last setpoint values for voltage and current prior to unit shutdown,
and recalling them when the unit is next turned on. Enable this function prior to power-up by set-
ting Analog I/O Switch 3 to the ON (down) position (see Table 2-2 and Figure 2-2). Upon next
power-up, each setpoint entry for voltage and current is stored in non-volatile memory, with lat-
est settings displacing prior ones. When the power supply is turned off, the last settings are
saved and automatically retrieved at next power-up as the starting setpoints. Note that this func-
tion applies to setpoint entries only (see PAR 3.2.6.2); output changes entered in real-time
mode (PAR 3.2.6.1) are not saved. To disable this function, turn the unit off and set Analog I/O
Switch 3 to the OFF (up) position; at next power-up, the stored value buffer is cleared and set-
points will default to zero volts and minimum current.
NOTE: If the virtual model for the power supply is altered, the last settings are reset to zero volts
and minimum current.
3.2.7 VIEWING/CHANGING OVERVOLTAGE OR OVERCURRENT PROTECTION VALUES
Overvoltage and Overcurrent protection values can be individually programmed. The range for
overvoltage and overcurrent values are 0.2 to 1.2 x E
O
max, 0.6 to 1.2 x I
O
max. If the output volt-