KEPCO BHK 1000-0.2MG, Operator'S Manual

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BHK-MG (OPR) 032816
2-11
ground (floating). This configuration is obtained using two 4-terminal links connected as shown
in Figure 2-4.
NOTE: REGARDLESS OF OUTPUT CONFIGURATION, OUTPUT SENSE LINES MUST BE
CONNECTED FOR PROPER OPERATION, EITHER LOCALLY, OR AT THE LOAD
(REMOTE). OBSERVE POLARITIES: THE +S TERMINAL (TB1-1) MUST BE CON-
NECTED TO OUT (TB1-2) (LOCAL) OR +LOAD (REMOTE), AND THE - S
TERMINAL (TB1-6) MUST BE CONNECTED TO EITHER –OUT (TB1-5) (LOCAL) OR
–LOAD (REMOTE).
Figures 2-4 and 2-5 are typical load connection diagrams illustrating the configurations
explained in the following paragraphs.
2.7.5.1 LOCAL SENSING/REMOTE SENSING SELECT
Local sensing (factory default configuration) is established by connecting terminals TB1-1
(+S) to TB1-2 (+OUT) and TB1-5 (–OUT) to TB1-6 (–S) (see Figure 2-4). The power supply is
shipped with these connections installed for local sensing.
Remote sensing is established by removing the links between TB1-1, TB1-2 and TB1-6, TB1-7.
The +S and –S lines must be connected at the load (see Figure 2-5).
2.7.5.2 FAST MODE/SLOW MODE SELECT
Fast mode is established when there is no connection between TB1-6 (–S) and TB1-7 (–OUT C)
(see Figure 2-5). Slow mode (factory default configuration) can be established by connecting
TB1-6 to TB1-7, thus connecting the internal output capacitor to the output (see Figure 2-4).
2.7.5.3 GROUNDING NETWORK CONFIGURATION
When the output is floating there is a tendency for large changes in output voltage to affect the
digital programming section, possibly resulting in an erroneous output. The parallel RC ground-
ing network is designed to be connected to ground at the output when the output is floating to
ensure that the digital programming section is not adversely affected by the dynamic swing of
the output. The power supply is shipped with the grounding network connected: a connection
between terminals TB1-3 (GND NET) and TB1-2 (+OUT). To disconnect the grounding network
from the output, remove the connection across TB1-3 and TB1-2 (see Figure 2-4).
2.7.5.4 POSITIVE OUTPUT, NEGATIVE TERMINAL GROUNDED
To configure the BHK-MG as a positive output power supply (referenced to ground), connect the
negative output terminal to ground: connect TB1-4 (GND - CHASSIS) to TB1-5 (–OUT). To
avoid degraded load regulation in current mode it is necessary to remove the grounding network
from the circuit by removing the link between TB1-2 (+OUT) and TB1-3 (GND NET).