KEPCO MBT Series - Manual (Page 52)

3-14
MBTSVC111609
2. Enter voltage value via key pad, e.g., 25.6.
3. Press ENTER to confirm or CLEAR ENTRY to correct. Display will return to “Output is
OFF” or “Keypad control” display with either the new setting (ENTER) or the old setting
(CLEAR ENTRY). If the entered value is too high, the display will indicate “Value too
high,” then return to either “Output is OFF” or “Keypad control” display, showing
the previous value.
NOTE: The display time for momentary messages, such as “Value too high,” can be
reduced by pressing any key until the message concludes; the ENTER key is conve-
nient for this purpose.
3.2.1.6.4 SLEW ( AND ) KEYS — M, MG MODELS
As described in PAR. 3.2.1.6.1 (M, MG Models) for the Vadj and numeric keys, the effect of the
slew keys is dependent upon model, commanded mode, output enabled/disabled, actual mode,
and the load.
Table 3-5 summarizes the effect of the slew key adjustment. The first three columns reflect the
status of the unit before the slew key is pressed. The fourth column shows how the adjustment
will affect the status of the power supply. Refer to PAR.s 3.1.1 and 3.1.2 for more details regard-
ing commanded and actual mode of operation (either voltage or current).
The slew keys are not operational when the power supply is in Remote mode, when you enter
the MENU (PAR. 3.2.2), or PROGRAM REV/CHG (PAR. 3.2.1.11.1) functions, or when a pro-
gram is running (PAR.s 3.2.1.11.3 and 3.2.1.11.5).
Table 3-5 shows that with the power supply commanded to operate in voltage mode, with the
output disabled, the slew keys adjust the programmed output voltage.
If the output is enabled and the value of the load is greater than or equal to the value of pro-
grammed voltage divided by programmed current (R
L
≥ V
Prog
/ I
Prog
), the power supply operates
in Voltage mode and the slew keys adjust actual output voltage.
If the output is enabled and the value of the load is less than the value of programmed voltage
divided by programmed current (R
L
< V
Prog
/ I
Prog
), the power supply will be forced to operate in
Current mode and the slew keys will adjust actual voltage limit. This will not be apparent from
the display indication; to see the revised voltage limit it is necessary to view status by pressing
SHIFT then (.) on the keypad.
VOLTAGE
MODE
CURRENT
MODE
POLARITY
REVERSED
REMOTE OUTPUT
ENABLED
STATUS
Const Volt = 25.6
###V ###A
VOLTAGE
MODE
CURRENT
MODE
POLARITY
REVERSED
REMOTE OUTPUT
ENABLED
STATUS
Volt limit = 25.6
###V ###A
or