Chapter 6 Remote Analog Programming; Introduction; Local/Remote Analog Indication - TDK-Lambda Genesys GEN6-100 User Manual

CHAPTER 6 REMOTE ANALOG PROGRAMMING

6.1 INTRODUCTION

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 0-5V or 0-10V
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.
COM (J1-12), VPGM_RTN (J1-22) and IPGM_ RTN (J1-23) terminals of J1
connect 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.
6.2 LOCAL /REMOTE ANALOG SELECTION
Contact 8 of J1 (Fig. 4-2, item 5) 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 sec. 6.4 and 6.5). Refer to Table 6-1 for Local/Remote Analog control (J1-8)
function and Setup switch SW1-1, 2 setting.
SW1-1,2 setting
Down (default)
Up

6.3 LOCAL/REMOTE ANALOG INDICATION

Contact 21 of J1 (Fig. 4-2, item 5) 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 6-2 for J1-21 function.
TTL "0" or short
TTL "1" or open
CAUTION
J1-8 function
No effect
"0" or Short
"1" or Open
Table 6-1: Local/Remote Analog control function
SW1-1
J1-8
Down
Down
Up
Up
Down or Up
Table 6-2: Local/Remote Analog indication
Output voltage/
Current setting
Local
Remote Analog
Local
SW1-2
Down
Up
Down
Up
Down or Up
44
44
J1-21 signal
Open
0~0.6V
0~0.6V
0~0.6V
Open