KEPCO BOP 100-1, Operator'S Manual

Page: 5 / 70

3
L) EXTERNAL CURRENT MONITOR. Use signal I
O
Sensing Output at pin 10 of the PC12 pro-
gramming connector (see Figure 4-5) for external current monitoring. This signal is not buff-
ered. Use a series 5K resistor in combination with a high impedance monitoring device, or an
external high impedance buffer between the BOP and the monitoring device.
CAUTION: An
accidental short-circuit at this terminal while the unit is in Current mode or Current limit
mode will damage the BOP power stage.
There is no overvoltage protection. This stage is
protected against short-circuit by the intrinsic protection of the OPAMP generating this signal.
This signal is used by the BIT card if it is installed.
DIGITAL CONTROL OF BOP POWER SUPPLIES, PARAGRAPH 3-46 add the following:
The SN and SNR Programmers and the BIT 488 cards described in this manual are older meth-
ods of controlling BOP power supplies via digital means. Although these products still function
as described, the recommended method of digital control is now the use of Kepco’s BIT 4886
16-bit plug-in card with resolution of 1/2
16
. This plug-in card provides talk-listen support for the
IEEE 488.2 bus using SCPI commands. The BIT 4886 card allows a BOP to communicate as a
stand-alone instrument, directly on the GPIB. The BIT 4886 card also allows the BOP to be pro-
grammed over the RS232C bus using either SCPI or CIIL commands via either an RS232-C
terminal, or from a PC using a terminal emulation program with a baud rate of 9600, no parity,
eight data bits and one stop bit. The downloadable BIT 4886 driver supports digital calibration
(no manual pots) and multiple control and read-back ranges, For more information refer to:
www.kepcopower.com/bit.htm.
PERIODIC MAINTENANCE, PARAGRAPH 5-6, add the following:
To clean the unit, proceed as follows:
1. Disconnect the unit from mains power.
2. Using a damp, lint-free cloth, wipe the exterior of the unit to remove accumulated dirt.
3. Reconnect AC power to the unit.
MASTER/SLAVE PARALLEL CONNECTIONS, PARAGRAPH 3-44, add the following:
For two or more two parallel units, refer to Figure 3-27A, below. This configuration is more sta-
ble and accurate than the simple configuration shown in Figure 3-27; it eliminates the parasitic
voltage drop on the COM connection of the slaves.