KEPCO BOP 100W, 200W, 400W (M, D) Quick Start Guide - Manual (Page 5)

KEPCO, INC. " 131-38 SANFORD AVENUE " FLUSHING, NY. 11355 U.S.A. " TEL (718) 461-7000 " FAX (718) 767-1102
http://www.kepcopower.com " email: [email protected]
071609 228-1678
5
IV — OPERATION
Turn the unit on using the front panel POWER switch/circuit
breaker (see Figure 2 or 3). CAUTION: DO NOT repeat-
edly toggle the POWER on/off switch as this may
cause unit to fault. If actuator does not lock when
released, wait a few seconds before trying again. The cir-
cuit breaker is "trip-free;” if overload exists, contacts cannot
be held closed by actuator.
NOTE: PC 15 rear programming connector must be
installed to enable local control of the unit.
4.1. VOLTAGE MODE OPERATION WITH CUR-
RENT LIMITING. The BOP may be used as a stabi-
lized (d-c) source of positive or negative voltage with output
current limiting (for either polarity) when pre-selected for
the application at hand. Always monitor the front panel
meters while adjusting output voltage/current.
1. Determine the output voltage and current requirements
of your load. Disconnect the load and set the BOP
MODE switch to CURRENT and the CURRENT CON-
TROL switch to ON.
2. Voltage limits are recommended to be greater than the
maximum voltage required for the load by 10% of the
rated voltage of the unit (e.g., for a 72V BOP and a load
that requires 30V, set voltage limits to ±37.2V).
If specific ± voltage limits are not needed, use a screw-
driver to adjust the + V VOLTAGE LIMIT potentiometer
to full clockwise position and - V VOLTAGE LIMIT
potentiometer to full counterclockwise position.
If specific ± voltage limits are needed, proceed as fol-
lows.
a. Turn CURRENT CONTROL fully counterclockwise.
Use a screwdriver to adjust the – V VOLTAGE
LIMIT potentiometer as desired (recommended to
be 10% greater than the maximum negative voltage
required for the load), monitoring the VOLTAGE
meter for the correct limiting value.
b. Turn CURRENT CONTROL fully clockwise. Use a
screwdriver to adjust the + V VOLTAGE LIMIT
potentiometer as desired, monitoring the VOLTAGE
meter for the correct limiting value.
3. With the a-c POWER circuit breaker/switch set to OFF,
disconnect the load and connect a short circuit across
the OUTPUT and COMMON terminals.
4. Set the CURRENT CONTROL switch to OFF. Set the
MODE switch to VOLTAGE and the VOLTAGE CON-
TROL switch to ON, then set BOP POWER a-c circuit
breaker/switch to ON.
5. Adjust the ± I CURRENT LIMIT potentiometers for both
polarities as required, monitoring the CURRENT meter
for the correct limiting value. Proceed as follows:
a. Turn VOLTAGE CONTROL fully counterclockwise.
Use a screwdriver to adjust the – I CURRENT
LIMIT potentiometer as desired.
b. Turn VOLTAGE CONTROL fully clockwise. Use a
screwdriver to adjust the + I CURRENT LIMIT
potentiometer as desired.
c. Set a-c POWER circuit breaker/switch to OFF, then
remove the short circuit from the output.
d. Set a-c POWER circuit breaker/switch to ON and
adjust the output voltage to zero using the VOLT-
AGE CONTROL.
e. Set a-c POWER circuit breaker/switch to OFF, then
connect the load to the BOP output.
6. Set a-c POWER switch/circuit breaker to ON, and
adjust the operating voltage by means of the VOLTAGE
CONTROL to the value required.
NOTE: If the output current exceeds the pre-adjusted value
at any time the VOLTAGE MODE indicator will go out and
the CURRENT LIMIT indicator will go on. After the cause of
the overcurrent is eliminated, the indicator lights will return
to their initial status.
4.2. CURRENT MODE OPERATION WITH VOLT-
AGE LIMITING. The BOP may be used as a stabilized
d-c source of positive or negative current, with output volt-
age limiting (for either polarity), pre-selected for the appli-
cation at hand. Always monitor the front panel meters while
adjusting output voltage/current
1. Determine the output current and voltage requirement
of your load.
2. With the a-c POWER circuit breaker/switch set to OFF,
disconnect the load and connect a short circuit across
the OUTPUT and COMMON terminals.
3. Set the BOP MODE switch to VOLTAGE and the VOLT-
AGE CONTROL switch to ON, then set a-c POWER cir-
cuit breaker/switch to ON.