Chapter 6 Remote Analog Programming; Introduction; Local/Remote Analog Control; Local/Remote Analog Indication - Lambda Genesys GENH 750W Technical 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 with an analog device. J1 also provides monitoring signals for Output Voltage and Out-
put 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 program-
ming mode, the serial communication port is active and can be used to query the power supply
settings.
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 INDICATION

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.
In Local mode, the Output Voltage and Output Current can be programmed via the front panel
VOLTAGE and CURRENT encoders or via the RS232/RS485 port. In Remote Analog mode, the
Output Voltage and current can be programmed by analog voltage or by programming resistors
via J1 contacts 9 and 10 (refer to Sections 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.
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 volt-
age source of 30Vdc maximum. Choose the pull-up resistor so that the sink current will be less
than 5mA when the output is in a low state. Refer to table 6-2 for J1-21 function.
J1-8
TTL "0" or short
TTL "1" or open
6.4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE AND OUTPUT
CURRENT LIMIT
SW1-1, 2 setting
Down (default) No effect
"0" or Short
Up
"1" or Open
Table 6-1: Local/Remote Analog control function
SW1-1
Down
Down
Up
Up
Down or Up
Table 6-2: Local/Remote Analog indication
83-507-5002 Rev. A
CAUTION
Output Voltage/
J1-8 function
Current setting
Local
Remote
Local
SW1-2 J1-21 signal
Down
Up
Down
Up
Down or Up
46
Mode
Open Local (FP)
0i0.6V Remote Analog
0i0.6V Remote Analog
0i0.6V Remote Analog
Open Local (FP)