Kenwood PS 430 Power Supply Manual

The Kenwood PS 430 is a regulated DC power supply unit featuring variable voltage output, current limiting, and multiple output modes. This professional-grade power supply offers stable DC power for laboratory, workshop, and electronic testing applications with precise voltage and current control, overload protection, and reliable performance. Below are key sections covering safety, features, operation, specifications, and maintenance.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Modes 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Variable voltage output, current limiting control, overload protection, digital displays, binding posts, and cooling fan.

Feature	Description
Voltage Output	0-30V DC continuously variable
Current Output	0-3A continuously variable
Voltage Display	Digital LED display for output voltage
Current Display	Digital LED display for output current
Binding Posts	Secure connections for positive and negative terminals
Cooling Fan	Thermally controlled for optimal temperature
Overload Protection	Automatic current limiting and thermal protection
CV/CC Mode	Constant Voltage/Constant Current operation
Line Regulation	±0.01% + 2mV
Load Regulation	±0.01% + 2mV (CV), ±0.2% + 3mA (CC)

Installation

Unpack and inspect contents. Place on stable, well-ventilated surface.

Position unit: Ensure adequate ventilation space around the power supply.
Connect to AC power: Use provided power cord and appropriate outlet.
Ground connection: Ensure proper grounding for safety.
Connect load: Use appropriate cables to connect device under test.

WARNING! Ensure proper ventilation; do not block cooling vents. Use in dry environment only.

First-Time Setup

Power on unit; allow warm-up period for stable operation.

Set voltage: Adjust VOLTAGE control to desired output level.
Set current limit: Adjust CURRENT control to maximum expected load current.
Verify displays: Check that voltage and current readings are accurate.
Connect load: Attach device under test to binding posts.
Enable output: Press OUTPUT button to activate power delivery.

CAUTION! Always set current limit before connecting sensitive devices.

Specifications

Output Voltage: 0-30V DC continuously adjustable
Output Current: 0-3A continuously adjustable
Line Regulation: ±0.01% + 2mV
Load Regulation: ±0.01% + 2mV (CV), ±0.2% + 3mA (CC)
Ripple & Noise: ≤1mV RMS (CV mode), ≤3mA RMS (CC mode)
Display Accuracy: ±1% + 1 digit
Operating Temp: 0°C to 40°C
Storage Temp: -20°C to 70°C
Power Requirements: 100-120V AC, 50/60Hz or 220-240V AC, 50/60Hz
Dimensions: Standard bench-top design
Weight: Approximately 4.5 kg

Controls and Settings

Front Panel: VOLTAGE control, CURRENT control, OUTPUT button, voltage display, current display, binding posts.

Operation: POWER switch, VOLTAGE adjustment, CURRENT adjustment, OUTPUT enable/disable.

Voltage Control: Rotate clockwise to increase output voltage. Current Control: Rotate clockwise to increase current limit. Output Control: Press to enable/disable DC output. Displays: Digital readouts show set voltage and actual current draw.

Connecting Devices

Use appropriate cables and connectors for your application.

Turn off output before making connections.
Connect positive lead to red binding post.
Connect negative lead to black binding post.
Ensure secure connections to prevent arcing.
Set voltage and current limits before enabling output.

Tip: Use banana plugs or spade connectors for secure connections.

Operation Modes

Supports Constant Voltage (CV) and Constant Current (CC) operation.

Constant Voltage Mode: Maintains set voltage regardless of load changes.
Constant Current Mode: Maintains set current limit when load demands exceed capability.
Mode Indication: LED indicators show active mode (CV or CC).
Automatic Crossover: Unit automatically switches between CV and CC modes.
Remote Sensing: For applications requiring precise voltage at load point.

WARNING! Do not exceed maximum voltage or current ratings.

Safety Features

Overload Protection: Automatic current limiting prevents damage to connected devices. Over-temperature Protection: Thermal shutdown protects internal components. Short-circuit Protection: Unit limits current during short-circuit conditions.

Care & Maintenance

Unplug before cleaning. Use dry cloth only; no liquids or chemical cleaners.

Regular maintenance: Clean ventilation slots, check binding posts for tightness, verify calibration annually.

CAUTION! Do not spray liquids; keep away from moisture and conductive dust.

Regulatory Information

CE Compliant: Meets European safety standards. RoHS Compliant: Free of hazardous substances. FCC Part 15: Class A digital device; may cause interference in residential areas. Copyright © Kenwood Corporation. For technical support, visit www.kenwood.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No output voltage	Output disabled/fuses	Press OUTPUT button; check fuses; verify power connection.
Inaccurate readings	Calibration needed	Perform calibration procedure; check connections.
Overload protection active	Current limit exceeded	Increase current limit; check for short circuits.
Unit overheating	Ventilation blocked	Clear ventilation slots; reduce ambient temperature.
Display flickering	Power fluctuation	Check AC power source; ensure stable input voltage.

Reset: Power cycle unit if abnormal operation occurs.

Service: Contact authorized Kenwood service center for repairs and calibration.