KEPCO BOP-HV - Manual (Page 18)

1-6
BOPHV112211
F) VOLTAGE CONTROL CHANNEL (refer to Section 3 - FIG. 3-1). The BIPOLAR VOLTAGE
AMPLIFIER, with a fixed gain of 50 (BOP 500M) or 100 (BOP 1000M) is connected, via the
MODE switch, to the (unity gain) VOLTAGE PREAMPLIFIER. If the BIPOLAR VOLTAGE
SWITCH is “on”, the BOP output voltage can be locally controlled by means of the (front
panel) (±) 10 volt bias source from (-) 100% (through zero) to (+) 100% of the rated value.
The VOLTAGE PREAMPLIFIER is provided with a ZERO control and all its terminals are
available at the rear programming connector for remote control of the output voltage. Con-
trol methods are described in Section 3 of this manual.
G) MODE SWITCH: The BOP is equipped with a front panel mounted MODE SWITCH, which
selects bipolar voltage or bipolar current control.
H) CURRENT CONTROL CHANNEL (refer to Section 3 - FIG. 3-2) The BIPOLAR CURRENT
AMPLIFIER, with fixed gain of 8 mA/V (BOP 500M) or 4 mA/V (BOP 1000M), is connected
via the MODE switch to the (unity gain) CURRENT PREAMPLIFIER. If the BIPOLAR CUR-
RENT SWITCH is “on”, the BOP output current can be locally (front panel) controlled (by
means of the ±10 volt bias source) from (-) 100% (through zero) to (+) 100% of the rated
value. The CURRENT PREAMPLIFIER is provided with a ZERO control and all its termi-
nals are available at the rear programming connector for remote control of the output cur-
rent. Control methods are described in Section 3 of this manual.
I)
J) BOUNDING: (refer to Section 3 - FIG. 3-3 and 3-4). The BOP has four adjustable output
voltage/current limiting circuits: (-) E
O
LIMIT, (+) E
O
LIMIT, (-) I
O
LIMIT, (+) I
O
LIMIT for
overvoltage/overcurrent protection in either operating mode. All limiting circuits can be
screwdriver adjusted by means of four front panel controls. In addition, all four limits can be
remotely controlled by means of 0 to 10 volts d-c control voltages. The four limits may be
programmed independently or the (±) voltage and (±) current limits can be controlled in
pairs. The adjustable/programmable limit controls are backed-up by non-adjustable limit
circuits which define the four boundaries [(±) E
O
MAX. and (±) I
O
MAX.] of the BOP, and
provide protection against accidental overprogramming of the adjustable limits.
K) MODE LIGHTS AND FLAG SIGNAL OUTPUT: Four (4) front panel (LED type) indicator
lamps monitor the prevailing operating mode of the BOP. In addition, four (4) corresponding
flag signal outputs are provided at the rear programming connector. For each operating
condition (VOLTAGE MODE, CURRENT MODE, ±E
O
LIMIT, ±I
O
LIMIT) the corresponding
indicator lamp lights up and the associated flag signal changes its state from (TTL) logic “1”
to “0”.
NOTE: If operating against back-up current limit (PAR. J) all 4 lights go out. The four lights also
go out after the protection circuit has been energized.
L) STANDARDS: BOP models are designed and tested in accordance with NEMA Standard
for Stabilized Power Supplies, d-c output, Publication No. PY-1-1972.
1.6 MECHANICAL SPECIFICATIONS
A) DIMENSIONS: See “Mechanical Outline Drawing,” FIG. 1-4.
B) FINISH: See “Mechanical Outline Drawing,” FIG 1-4.
C) FRONT PANEL METERS: M Suffix: 2-1/2 inches wide, recessed. Accuracy ±2% full scale.
Two (2) “zero center” analog meters monitoring the ±d-c voltage and the ±d-c current are
provided. DM suffix: Analog meters are replaced by digital panel meters, 3-1/2 digits.
±200mV full scale, power requirements: ±5V, ±5%.