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 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 commu- nication port is active and can be used to read the power supply parameters.

CAUTION

COM (J1-12), VPGM_RTN (J1-22) terminals are connected AND IPGM_RTN (J1-23) terminal of J1 is referenced internally to the -Vout potential (-V). Do not connect these terminals to any potential other than -Vout (-V), as it may damage the power supply.

6.2 LOCAL/REMOTE ANALOG CONTROL

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 Out- put 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 settings.

SW1-1, 2 setting

J1-8 function

Output Voltage/

Current setting

 

 

Down (default)

No effect

Local

Up

“0” or Short

Remote Analog

“1” or Open

Local

 

Table 6-1: Local/Remote Analog control function

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 a low state. Refer to table 6-2 for J1-21 function.

J1-8

SW1-1

SW1-2

J1-21 signal

TTL “0” or short

Down

Down

Open

 

Down

Up

00.6V

 

Up

Down

00.6V

 

Up

Up

00.6V

TTL “1” or open

Down or Up

Down or Up

Open

Table 6-2: Local/Remote Analog indication

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TDK 5KW technical manual Remote Analog Programming, LOCAL/REMOTE Analog Control, LOCAL/REMOTE Analog Indication

5KW specifications

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