Today, when we think about controlling the output of a power supply, we usually think about digital control via a USB port or some other network interface. That's not the only way to control a power supply, though. Analog control is still used in many industrial applications, and it’s also a good choice if you have fairly simple control needs.
The optional Analog Programming (APG) Interface allows you to control the Sorensen XT Series and HPD Series of DC power supplies with either 0-10 VDC signal or a 0-10 kΩ resistance. You connect these signals to the power supply via a female DB-25 connector on the unit's rear panel.
The APG's interface provides the following features:
The performance specifications are shown in Table 1 below:
Remote Analog Programming |
0-10 VDC for 0-100% of rated voltage or current ±0.1%, 0-10 kΩ for 0-100% of rated voltage or current ±0.1% |
OVP Trip Range | 3V to full output + 10% |
Remote ON/OFF | 2 to 25Vdc high. <0.8Vdc low. User-selectable logic |
Tracking Accuracy | ±1% |
As an example of how to use the features of the APG interface, let's look at how to program the supply's output voltage with a 0-10 VDC voltage source:
The procedure for programming the output voltage with a 0-10 kΩ resistance and programming the output current with either a 0-10 VDC signal or a 0-10 kΩ resistance is very similar to this.
For more information on how to use remote analog programming, or isolating control signals, contact AMETEK Programmable Power via e-mail sales.ppd@ametek.com or call 800-733-5427.