1. Uvod
This manual provides essential information for the safe and efficient operation of your VAR TECH Programmable DC Power Supply, model PPS-3020 S. Please read this manual thoroughly before using the device to ensure proper functionality and to prevent damage or injury.
1.1 Sigurnosne mjere
- Uvijek priključite napajanje na uzemljenu utičnicu.
- Nemojte koristiti uređaj na mokrom ili damp uslovima.
- Osigurajte odgovarajuću ventilaciju kako biste spriječili pregrijavanje.
- Ne otvarajte casing; servisiranje prepustite kvalifikovanom osoblju.
- Potvrdite tačan voltage and current settings before connecting to a load.
2. Proizvod je gotovview
The VAR TECH PPS-3020 S is a programmable DC power supply offering 0-30V and 0-20A output with a USB interface for remote control. It features high precision, stability, and multiple protection functions.
2.1 Ključne karakteristike
- 0-30 V, 0-20 A Programmable output with USB Interface.
- 5 L.E.D. Multicolour meters of 4 Digits for CV (Constant Voltage) and CC (Constant Current) indication.
- 6 Sets of Memory for storing and recalling settings.
- Output On/Off Facility for safe load connection/disconnection.
- Supports MODBUS-RTU Commands for remote control.
- Over Voltage Protection (OVP), Over Current Protection (OCP), and Over Temperature Protection (OTP).
2.2 Kontrole i indikatori na prednjoj ploči
Slika 1: Izgled prednje ploče
- Digitalni displeji: Multi-color LED displays for Voltage (V), Current (A), Power (W), and Set Values (V-SET, I-SET).
- CV/CC Indicators: LEDs indicating Constant Voltage or Constant Current mode.
- Dugme V-SET: Press to adjust voltage postavka.
- Dugme I-SET: Press to adjust current setting.
- Dugme za PODEŠAVANJE: Rotary encoder for fine adjustment of voltage i trenutne vrijednosti.
- Dugme MEMORIJA: Access memory functions.
- LIST Button: Navigate through memory slots.
- Dugme UKLJUČENO / ISKLJUČENO: Toggles output power.
- LEFT / RIGHT Buttons: Used for digit selection during setting adjustments.
- USB port: For PC connection and remote control.
- Prekidač: Main power ON/OFF button.
- Izlazni priključci: Positive (+), Negative (-), and Ground (GND) terminals for load connection.
2.3 Side and Rear Panel
Slika 2: Pod uglom View with Side Vents
The side panels feature ventilation grilles for heat dissipation. The rear panel typically includes the AC power input socket, a cooling fan, and potentially additional communication ports (not explicitly shown in provided images but common for such devices).
3. Podešavanje
3.1 Raspakivanje i pregled
Carefully remove the power supply from its packaging. Inspect the unit for any signs of physical damage. Retain the packaging for future transport or storage.
3.2 Priključak za napajanje
- Ensure the main power switch on the front panel is in the OFF position.
- Connect the provided AC power cord to the power input socket on the rear panel of the power supply.
- Plug the other end of the AC power cord into a suitable grounded electrical outlet.
3.3 Output Terminal Connection
Connect your load to the output terminals using appropriate test leads. Ensure correct polarity:
- Connect the positive (+) terminal of the power supply to the positive input of your load.
- Connect the negative (-) terminal of the power supply to the negative input of your load.
- The GND terminal is for chassis ground and should be connected to the load's ground if required for safety or noise reduction.
Caution: Do not short-circuit the output terminals for extended periods, even with protection enabled.
4. Uputstvo za upotrebu
4.1 Uključivanje/isključivanje napajanja
- Pritisnite glavni POWER ON/OFF switch on the front panel to turn the unit on. The displays will illuminate.
- Za isključivanje pritisnite POWER ON/OFF ponovo prebacite.
4.2 Podešavanje Voltage i struja
- Pritisnite V-SET dugme za unos glastage setting mode. The voltage display will flash.
- Koristite ADJUST knob to change the voltage value. Turn clockwise to increase, counter-clockwise to decrease.
- Koristite LIJEVO i PRAVO buttons to select the digit you wish to adjust for finer control.
- Pritisnite V-SET again to confirm the setting or wait a few seconds for it to auto-confirm.
- Repeat steps 1-4 for current setting using the I-SET dugme.
4.3 Kontrola izlaza
Nakon podešavanja željene jačine zvukatage and current, press the ON / OFF button (typically green) to enable or disable the output. When the output is ON, the corresponding indicator will light up, and power will be supplied to the load. When OFF, no power is supplied.
4.4 Funkcije memorije
The PPS-3020 S allows you to store and recall up to 6 sets of voltage i trenutne postavke.
- Za spremanje: Podesite željeni volumentage and current. Press and hold the MEMORY button until a memory slot number (e.g., 'M1') flashes on the display. Use the ADJUST dugme ili LIST button to select a memory slot (M1-M6), then press MEMORY opet za uštedu.
- Da se prisjetimo: Pritisnite MEMORY button briefly. The current memory slot will be displayed. Use the ADJUST dugme ili LIST button to select the desired memory slot. Press MEMORY again to load the stored settings.
4.5 USB Interface and MODBUS-RTU
The USB port on the front panel allows connection to a computer for remote control and monitoring. The device supports MODBUS-RTU commands, enabling integration into automated test systems or custom software applications. Refer to the separate software manual or communication protocol guide for detailed instructions on using the USB interface and MODBUS-RTU commands.
5. Održavanje
5.1 Čišćenje
To clean the unit, disconnect it from the power source. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents. Ensure no liquids enter the device.
5.2 Skladištenje
When not in use for extended periods, store the power supply in a cool, dry environment, away from direct sunlight and excessive dust. It is recommended to use the original packaging for storage.
6. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Nema napajanja kada je uključen | Power cord not connected; Power outlet faulty; Internal fuse blown. | Check power cord connection; Test outlet; Contact service for fuse replacement. |
| Nema izlaznog voltage/current | Output is OFF; Voltage/current set to zero; Overload/protection activated. | Press Output ON/OFF button; Adjust V/I settings; Check load for short-circuit or excessive current draw. |
| Jedinica se pregreva | Blocked ventilation; Excessive ambient temperature; Continuous high load. | Ensure clear airflow around vents; Operate in a cooler environment; Reduce load or operating time. |
| Netačna očitavanja | Poor connection; External interference; Unit requires calibration. | Check all connections; Isolate from strong electromagnetic fields; Contact service for calibration. |
7. Specifikacije
| Parametar | Vrijednost |
|---|---|
| Brand | VAR TECH |
| Model | PPS-3020 S |
| Output Voltage | 0-30 V DC |
| Izlazna struja | 0-20 A |
| Output Wattage | 600 Watts |
| Display | 5 L.E.D. Multicolour meters, 4 Digits |
| Interface | USB (MODBUS-RTU support) |
| Zaštita | Over Voltage, prekomjerna struja, prekomjerna temperatura |
| Memorijski setovi | 6 |
| Dimenzije proizvoda | 26 x 16 x 12.5 cm |
| Težina artikla | 2.5 kg |
| Metoda hlađenja | Vazduh |
| Zemlja porijekla | Kina |
8. Garancija i podrška
VAR TECH products are designed for reliability and performance. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims, technical support, or service inquiries, please contact VAR TECH customer service. Please have your model number (PPS-3020 S) and purchase information ready when contacting support.
Kontakt informacije:
Email: info@var-tech.com
