TDK 750W, 1500W technical manual Remote Analog Programming, LOCAL/REMOTE Analog Indication

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 mode, the serial communication port is active and can be used to query the power supply settings.

CAUTION

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 termi- nals 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 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
	“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	Mode
TTL “0” or short	Down	Down	Open	Local (FP)
	Down	Up	00.6V	Remote Analog
	Up	Down	00.6V	Remote Analog
	Up	Up	00.6V	Remote Analog
TTL “1” or open	Down or Up	Down or Up	Open	Local (FP)

Table 6-2: Local/Remote Analog indication

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83-507-013 Rev. D