Tech Tips

Connection

  • No common use of GNDs is allowed among signal lines, power lines, and status lines.
  • The wiring of remote lines should be as short as possible.
  • The wiring of remote lines should be away from the high frequency power supplies.
NOK
When commonly connected the lines, the output current will cause signal fluctuations.
OK
Diagram of remote connector

Monitor

  • Impedance...The measurement values varies with the input impedance of the measuring device connected to the DC power supply.
Diagram with the input impedance
r
(Output impedance)
R
(Input impedance by measuring instrument)
Deviation
1 k 10 k 10%
100 k 1%
1 M 0.1%

Introduction of Remote Programming

Programming of voltage/current/OCP/OVP using external voltage

While controlled in the remote mode, the voltage is output up to the maximum from 0 by applying voltage between 0 and 10 V to the input terminal for programming.

Diagram using external voltage
Programming input Power supply
output
CV, CC,
OVP, OCP
0 to 10 V 0 to rated value

Programing of voltage/current in current source mode with external resistance

While controlling in the remote mode as well as the current source mode, the power supply is available with the output voltage range between 0 and the maximum by connecting from 0 to 10 kΩ toward the input terminal for programming. Meanwhile, in the fail-safe mode, by connecting from 10 kΩ to 0, the power supply is available with the output voltage range between 0 and the maximum.

Diagram in current source mode with external resistance
Programming input Fail-safe mode Power supply
output
CV, CC 0 to 10 k 10 k to 0 0 to rated value

Programming of voltage/current/OCP/OVP using external resistance

While controlled in the remote mode, the setting is available by using the internal reference power supply.

Diagram using external resistance
Programming input Output
CV, CC 0 to 10 k 0 to rated value

Note

Fluctuation of external control voltage source will directly affect the output voltage. So, prepare stable voltage source.

PSX series

PSX series of Matsusada is the best choice as programmable DC power supply!

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