KEPCO BHK-MG 200W (Full Rack) Series - Manual (Page 79)

BHK-MG (OPR) 022014
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• If the power supply must operate isolated from ground (floating), any external equipment
connected to the ANALOG PROGRAMING TERMINALS must also be isolated (battery
operated or connected to a-c source power using an isolating transformer).
Safety Messages
The BHK-MG can be controlled by digital and/or analog inputs. When OUTPUT is set to off from
the keypad or the GPIB, an analog input will still produce an output from the BHK-MG which will
be indicated on the LCD. If the analog input is causing more than 8Vd-c to appear at the output
terminals, or if current being supplied to the load exceeds 1mA, the unit will beep and enter a
controlled shutdown for safety purposes unless the override jumper has been installed (see
Table 2-9).
3.6.2 PROGRAMMING WITH EXTERNAL RESISTANCE
Figures 3-9 and 3-10 are simplified diagrams of the BHK-MG showing the jumper configuration
and external connections required for analog programming using an external resistance. Fig-
ures 3-9 shows programming of either output voltage when the unit is in voltage mode, or volt-
age limit when the unit is in current mode. Figure 3-10 is a similar diagram for programming
either output current when the unit is in current mode, or current limit when the unit is in voltage
mode.
FIGURE 3-9. ANALOG PROGRAMMING OF OUTPUT VOLTAGE (VOLTAGE MODE)
OR VOLTAGE LIMIT (CURRENT MODE) USING RESISTANCE