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CHAPTER 3:
3.1
Introduction
The Rear Panel connector J1 allows the user to program the power supply output voltage and
current with an analog device. J1 also provides monitoring signals for output voltage and output
current. The programming range and monitoring signals range can be selected between 0-5V or 0-
10V using the Front Panel menu or communication.
3.2
Local/Remote Analog Control
Signal LOC/REM_INPUT J1-6 accepts electrical signal or dry contact (Referenced to J1-11) to
select between Local or Remote Analog programming of the output voltage and current. Refer to
Table 3-1 for signal levels.
In Local mode, the output voltage and current can be programmed via the Front Panel Voltage and
Current encoders or via the Communication interface. In the Remote Analog mode, the output
voltage and current can be programmed by analog voltage or by programming resistors via J1
contacts. Refer to Analog Programming Setting Table 3-1 & Figure 3–1 for remote voltage
programming connection or Figure 3–2 for remote resistor programming connection.
3.3
Local/Remote Analog Indication
Contact J1-5 is an open collector output that indicates if the power supply is in the Local mode or in
the Remote Analog mode. To use this output, connect a pull-up resistor to a voltage source of
maximum 30VDC. Choose the pull-up resistor so that the sink current is less than 10mA when the
output is in low state. J1-5 signal is low if J1-6 is low and at least one of the Analog control modes
is selected. Refer to Analog Programming Setting Table 3-1.
LOC/REM_INPUT
2~30V Or Open
0~0.6V Or Short
0~0.6V Or Short
0~0.6V Or Short
0~0.6V Or Short
REMOTE ANALOG PROGRAMMING
Voltage source
(V.SRC)
Not applicable
PANEL
E.VOL Or E.RES
PANEL
E.VOL Or E.RES
Table 3-1: Local/Remote Analog Control and Indication
Current source
LOC/REM_MON
(C.SRC)
Not applicable
Off
PANEL
Off
PANEL
0~0.6V Or Short
E.VOL Or E.RES
0~0.6V Or Short
E.VOL Or E.RES
0~0.6V Or Short
44
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