Manual for PR18-1.2

1. Outline: The PR Series is a regulated DC power supply with constant voltage/constant current output, adjustable from 0 to rated values. It features calibrated meters for simultaneous voltage and current monitoring and high-precision variability via coarse and fine adjust knobs. Multiple units can be connected in parallel for increased current output in a master/slave configuration.

2. Features: Offers extremely low voltage/load fluctuations and ripple noise. Provides separate voltage and current meters, continuously adjustable output voltage/current, and overload/shorting protection via constant current circuit. Supports "one control" series or master/slave parallel operation. Optional rack mounting is available.

4. Precautions for Use: Ensure operation within the specified voltage range (100-240V AC +/- 10%) and ambient temperature (0-40 deg C). Avoid obstructing ventilation. For output terminals, ensure the MASTER/SLAVE switch is set to MASTER for ordinary use, and connect either the (+) or (-) terminal to GND via a shorting bar.

5. Explanation of Panels: Details the front panel components including POWER ON/OFF, POWER LED, Voltmeter, Ammeter, VOLTAGE COARSE/FINE adjust knobs, and CURRENT adjust knob. Also identifies output terminals (+), (-), and GND. The rear panel includes the MASTER/SLAVE switch, IN/OUT terminals for parallel operation, power cable, and heat sink.

6. Operation Procedures: Covers Stand Alone Operation (set MASTER/SLAVE to MASTER), Serial Connection (for increased output voltage, ensuring terminal voltages do not exceed ground proof voltage), and Parallel Operation (master/slave control for increased current capacity). Specific hook-up procedures and connection diagrams are provided for both serial and parallel configurations.

7. Maintenance: Includes instructions for removing the case, changing the rated source voltage by adjusting the internal power transformer and fuse specifications, and replacing fuses. A chart provides fuse ratings for different models and voltage settings.

8. Troubleshooting: A table lists common problems (e.g., power supply won't turn on, no output voltage/current, excessive/unstable output) with indicators to check, causes, and remedies.