Operating the Power Supply Locally 3
•Set the programming resistors to the desired resistance and turn the power supply on. Adjust the resistors to change the power supply output.
The analog control circuits let you set the output voltage and current limit up to 5% over the
SW1 switch 3 |
| Voltage Programming | Current programming | |
|
| (J1 pin 9) | (J1 pin 10) | |
Down (default) |
| 0 – 5 kΩ | 0 – 5 kΩ | |
Up |
| 0 – 10 kΩ | 0 – 10 kΩ | |
CURRENT LIMIT |
|
| OUTPUT VOLTAGE |
|
PROGRAMMING |
|
| PROGRAMMING | PROGRAMMING |
PROGRAMMING |
|
|
| |
RESISTOR |
|
|
| RESISTOR |
12 | 10 | 9 | 8 |
|
13 |
|
|
| 1 |
25 |
|
|
| 14 |
OPTIONAL SETS | 23 | 22 |
| OPTIONAL SETS |
LOWER LIMIT |
| LOWER LIMIT | ||
|
|
| ||
OPTIONAL SETS |
|
|
| OPTIONAL SETS |
UPPER LIMIT |
|
|
| UPPER LIMIT |
External Monitoring of Output Voltage and Current
The J1 connector also provides analog signals for monitoring the output voltage and current. Selection of the voltage range between 0
–5 V or 0 – 10 V is made by SW1 setup switch 4. The monitoring signals represent 0 to 100% of the power supply output voltage and current rating. The monitor outputs have a 500 Ω series output resistance. Make sure that the sensing circuit has an input resistance greater than 500 kΩ or the accuracy will be reduced.
SW1 switch 4 | Voltage | J1 signal | Signal function | |
| range | connection |
| |
Down (default) | 0 | – 5 V | J1 pin 11 | Voltage Monitor |
|
|
| J1 pin 24 | Current Monitor |
Up | 0 | – 10 V | J1 pin 11 | Voltage Monitor |
|
|
| J1 pin 24 | Current Monitor |
J1 pin 12 is the signal common for J1 pins 11 and 24.
Series N5700 User’s Guide | 45 |