Hardware Overview
PS2-08-A Power Supply
| # | Description |
|---|---|
| 1 | Main power switch |
| 2 | High voltage (HV) control switch |
| 3 | USB port (Micro USB) |
| 4 | Analog monitor breakout port (HDMI) |
| 5 | HV On LED indicator |
| 6 | HV Off LED indicator |
| 7 | HV output channels |
| 8 | Main power LED indicator |
| 9 | Potentiometer for HV rail adjustment |
| 10 | 24V DC input (from AC/DC adapter) |
| 11 | HV return terminal |
| 12 | Reset button (not shown, on bottom) |
PS2-08-A Peripherals
| # | Description |
|---|---|
| 13 | AC-DC input power adapter (24V, 3A) |
| 14 | HV return cable with banana jack receptacles |
| 15 | USB Isolator |
| 16 | Micro USB Cable |
| 17 | Analog monitor breakout adapter (HDMI) |
PS2-08-A Setup
Connect the USB Isolator (15) to a USB port on your computer.
Connect the USB Isolator to the micro-USB cable (16).
Connect the other end of the micro-USB cable to the PS2-08-A USB port (3).
(Optional) Connect the HDMI Adapter (17) to the HDMI Output (4) of the PS2-08-A for real time channel voltage and current monitoring. Refer to the PS2-08-A datasheet for more information.
Connect the Barrel Jack Supply (17) to a power outlet, and to the PS2-08-A at the input power port (4).
Connect actuators/loads to the HV output ports (7) of the PS2-08-A.
- 6a. If using the unipolar configuration, connect your load/actuator/s so that one side is connected to a HV output port (7) and the other side is connected to the HV return (11).
- 6b. If using the bipolar configuration, connect your load/actuator/s so that one side is connected to a HV output port (7) and the other side is connected to an adjacent HV output port (7).
- Now turn on the main power switch (1), the power LED (8) will shine orange and the HV Off LED (6) will shine green.
Turn on the HV Switch (2) to enable high voltage. The HV On LED (5) will shine red when high voltage is active. Now you may run your desired python script for actuation or interact with the device using the ARDI console. For more details, please continue reading the guide for unipolar operation or bipolar operation.
Automatic Calibration
Upon switching HV on, the power supply calibrates to the connected load and and selects control parameters accordingly. Incorrect control parameters may damage actuators or the power supply itself.
NEVER CONNECT LOADS WHILE HV IS ON.
To change connected loads, always turn off HV, disconnect the load, and then turn HV back on. The power supply will re-calibrate to the new load and select appropriate control parameters for driving it.
Please note that during calibration, all channels will output up to 1kV.
Analog Monitors
The PS2-XX-A comes with an HDMI breakout adapter (17) for monitoring the rail voltage, channel voltages, and total output current. The pinout for the HDMI adapter is shown below.
| Pin | Description | Pin | Description |
|---|---|---|---|
| 10 | Channel 8 | 9 | Channel 1 |
| 11 | NC | 8 | Channel 2 |
| 12 | NC | 7 | Channel 7 |
| 13 | NC | 6 | Channel 4 |
| 14 | NC | 5 | Channel 3 |
| 15 | NC | 4 | Channel 6 |
| 16 | NC | 3 | Channel 5 |
| 17 | NC | 2 | Rail Voltage |
| 18 | NC | 1 | Rail Current |
| 19 | NC | 20 | Ground |
The analog outputs are 0 – 3.3V range and require the following conversions.
Channel Voltage Monitors:
Actual Channel Voltage (V)= Measured Voltage (V)*3333.3
This measurement is accurate to 0.5%.
Rail Voltage Monitor:
If Measured Voltage (V) <= 1.55V, then Actual Channel Voltage (V) = Measured Voltage (V) * 3727.75 + 13.93
If Measured Voltage (V) > 1.55V, then Actual Channel Voltage (V) = Measured Voltage (V) * 3597.86 + 127.84
This measurement is accurate to +/- 100V, or 1% at 10kV.
Rail Current Monitor:
Actual Current (mA) = 2.015 * Measured Voltage (V) + 0.0369
The current monitor is only accurate when operating below 2Hz. Please contact Artimus’ engineering team if you wish to accurately measure current at higher frequencies.