NEDLATSDY SK40 SK90

NEDLATSDY SK40 SK90 CNC Regulated Power Supply Module

User Manual

1. Introduction

The NEDLATSDY SK40 SK90 is a versatile CNC regulated power supply module designed for precise voltage and current control. This adjustable boost/buck converter allows users to set specific output voltage and current limits, making it suitable for a wide range of electronic applications, including industrial, automotive, and household electronics. This manual provides essential information for the safe and effective operation of your module.

2. Safety Information

Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the product.

Ensure proper ventilation to prevent overheating.
Do not expose the module to moisture or extreme temperatures.
Always disconnect power before making any connections or disconnections.
Verify input voltage and current are within the specified limits.
Handle with care to avoid damage to electronic components.
This device is intended for use by qualified personnel familiar with electronic circuits.

3. Product Overview

The SK40 SK90 module features a clear digital display and intuitive controls for setting output parameters. Key components include input/output terminals, control buttons, and a rotary encoder for adjustments.

NEDLATSDY SK40 SK90 CNC Regulated Power Supply Module with digital display showing voltage, current, and power settings.

Figure 1: Front view of the NEDLATSDY SK40 SK90 CNC Regulated Power Supply Module, displaying its digital interface and control buttons.

The display shows real-time output voltage, current, and power, along with set voltage (V-SET) and set current (I-SET) values. Over-voltage protection (OVP) and over-current protection (OCP) limits are also visible.

4. Specifications

Specification	Value
Manufacturer	NEDLATSDY
ASIN	B0FZFFVS6W
Date First Available	November 3, 2025
Type	CNC Regulated Boost/Buck Power Supply Module
Control	Adjustable Voltage and Current

5. Setup

Follow these steps to set up your SK40 SK90 module:

Connect Input Power: Connect a suitable DC power source to the input terminals of the module. Ensure correct polarity (+ to + and - to -). The input voltage must be within the module's specified operating range.
Connect Load: Connect your load device to the output terminals of the module. Again, observe correct polarity.
Power On: Apply power to the input terminals. The module's display should illuminate.
Initial Check: Before connecting sensitive loads, it is recommended to perform an initial check with no load or a dummy load to verify basic functionality and output settings.

6. Operating Instructions

The module features several buttons and a rotary encoder for operation:

M/↑ Button: Used for menu navigation and increasing values.
V-SET Button: Enters voltage setting mode.
I-SET Button: Enters current setting mode.
OK/↓ Button: Confirms selections and decreases values.
Rotary Encoder: Used for fine adjustment of values in setting modes. Pressing the encoder often confirms or switches digit selection.

Setting Output Voltage (V-SET):

Press the V-SET button. The voltage display will flash, indicating it's in setting mode.
Use the Rotary Encoder to adjust the desired voltage value. Press the encoder to move between digits.
Press OK/↓ to confirm the setting and exit voltage setting mode.

Setting Output Current Limit (I-SET):

Press the I-SET button. The current display will flash.
Use the Rotary Encoder to adjust the desired current limit. Press the encoder to move between digits.
Press OK/↓ to confirm the setting and exit current setting mode.

The module will automatically regulate the output to the set voltage and current limits. If the load draws more current than the set limit, the module will operate in constant current (CC) mode, limiting the current and potentially reducing the output voltage.

7. Maintenance

To ensure the longevity and optimal performance of your SK40 SK90 module, follow these maintenance guidelines:

Cleaning: Use a soft, dry cloth to clean the module's exterior. Do not use liquid cleaners or solvents.
Storage: Store the module in a cool, dry environment away from direct sunlight and corrosive substances when not in use.
Inspection: Periodically inspect the terminals and connections for any signs of wear, corrosion, or loose contacts.

8. Troubleshooting

If you encounter issues with your module, refer to the table below for common problems and solutions:

Problem	Possible Cause	Solution
No display/No power	Incorrect input power connection; No input power; Faulty power source.	Check input power supply and connections. Ensure correct polarity.
Output voltage/current not stable	Loose connections; Overload; Input power fluctuation.	Secure all connections. Reduce load. Ensure stable input power.
Module gets hot	Excessive load; Insufficient ventilation.	Reduce load or ensure adequate airflow around the module.
Output voltage is lower than set	Module is in constant current (CC) mode due to load drawing too much current.	Check the load's current draw. Increase the set current limit (I-SET) if necessary, or reduce the load.

If the problem persists after attempting these solutions, please contact customer support.

9. Customer Support

NEDLATSDY is committed to providing exceptional customer support. If you have any questions, concerns, or require assistance with your SK40 SK90 module, please do not hesitate to contact our knowledgeable team. We are available to help ensure your satisfaction and address any issues you may encounter.

Please refer to your purchase documentation or the retailer's website for specific contact information.