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5. REMOTE ANALOG PROGRAMMING
The rear panel connector J1 allows the user to program the power supply output voltage and current limit 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 0V to 5V or 0V to 10V using the setup
switch SW1. When the power supply is in Remote Analog programming, the serial communication port is active and
can be used to read the power supply parameters.
CAUTION
!
COM (J1-12), VPGM_RTN (J1-22) and IPGM_RTN (J1-23) terminals of J1connect
internally to the -Sense potential (-S). Do not connect these terminals to any
potential other than -Sense (-S), as it may damage the power supply.
5-1. LOCAL /REMOTE analog control
Contact 8 of J1 (Fig. 3-3, item 24) accepts TTL signal or Open-Short contact (referenced to J1-12) to select between
Local or Remote Analog programming of the output voltage and current limit.
In Local mode, the output voltage and current limit can be programmed via the front panel VOLTAGE and CURRENT
encoders or via the RS232/485 port. In Remote Analog mode, the output voltage and current limit can be
programmed by analog voltage or by programming resistors via J1 contacts 9 and 10.
◆
Refer to
"5-3. Remote voltage programming of output voltage and current limit"
and
"5-4. Resistive programming of output voltage and current limit".
◆
Refer to Table 5-1 for Local/Remote Analog control (J1-8) function and Setup switch SW1-1, 2 setting.
Table 5-1: Local/Remote Analog control function
SW1-1,2 setting
J1-8 function
Output voltage/Current setting
Down (default)
No effect
Local
Up
“0” or Short
Remote
“1” or Open
Local
5-2. LOCAL/REMOTE analog indication
Contact 21 of J1 (Fig. 3-3, item 24) is an open collector output that indicates if the power supply is in Local mode or in
Remote Analog mode. To use this output, connect a pull-up resistor to a voltage source of 30Vdc maximum.
Choose the pull-up resistor so that the sink current will be less than 5mA when the output is in low state.
◆
Refer to Table 5-2 for J1-21 function.
Table 5-2: Local/Remote Analog indication
J1-8
SW1-1
SW1-2
J1-21 signal
TTL “0” or short
Down
Down
Open
Down
Up
0V to 0.6V
Up
Down
0V to 0.6V
Up
Up
0V to 0.6V
TTL “1” or open
Down or Up
Down or Up
Open
Summary of Contents for PU100-15
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