Introduction
This manual provides essential information for the safe and efficient operation of your Delta MS300 Series Frequency Converter. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper usage and to prevent damage to the unit or associated equipment.
The Delta MS300 series is a standard compact vector control drive that inherits Delta’s superior drive technology. It supports both IM and PM motor control, offering high efficiency and flexibility. It is designed for various general-purpose applications.
Video: Overview of Delta MS300 and ME300 Series Frequency Converters, showcasing different models and internal components.
Safety Information
WARNING: Read the user manual before operation. Risk of electrical shock. Wait 10 minutes after removing power before servicing. Do not connect AC power to output terminals U/T1, V/T2 and W/T3.
Always ensure the power is off and wait for the specified discharge time before performing any maintenance or inspection. Improper handling can lead to severe injury or death.
Setup and Installation
Initial Inspection
After receiving the AC motor drive, please check for the following:
- Inspect the unit after unpacking to ensure it was not damaged during shipment.
- Make sure that the mains voltage is within the range as indicated on the nameplate.
- Before applying the power, please make sure that all devices, including mains power, motor, control board and digital keypad, are connected correctly.
- When wiring the AC motor drive, please make sure that the wiring of input terminals "R/L1, S/L2, T/L3" and output terminals "U/T1, V/T2, W/T3" are correct to prevent damage to the drive.
- When power is applied, select the language and set parameters via the digital keypad (KPMS-LE01).
- When executing a trial run, please begin with a low speed and then gradually increase the speed until the desired speed is reached.
Nameplate Information
The product nameplate provides critical information about your specific unit. Refer to the diagram below for details.
Diagram: Delta MS300 Inverter Nameplate Layout and Information.
- Model: VFD 4A8MS23ANSAA (Example)
- Input: Normal Duty: 3PH 200-240V 50/60Hz 6.0A, Heavy Duty: 3PH 200-240V 50/60Hz 5.8A
- Output: Normal Duty: 3PH 0-230V 5A 1.9KVA 1HP, Heavy Duty: 3PH 0-230V 4.8A 1.8KVA 1HP
- Frequency Range: 0-599Hz
- Firmware Version: 1.00
- Enclosure Type: (IPXX)
- Certifications: (UL, CE, etc.)
- Serial Number: (Unique identifier)
Serial Number Structure
Understand the serial number to identify production details of your unit.
Diagram: Breakdown of the Delta MS300 serial number components.
Model Name Interpretation
The model name provides detailed specifications about the drive.
Diagram: Explanation of the Delta MS300 model naming convention.
- VFD: Variable Frequency Drive
- Rated Output Current: e.g., 4A8 for 4.8A
- Series: MS (MS300 Standard Micro Drive)
- Input Voltage: 11 (115V 1-phase), 21 (230V 1-phase), 23 (230V 3-phase), 43 (460V 3-phase)
- Protection Level: A (IP20), E (IP40), M (IP66)
- EMC Function: N (No function), F (Internal Filter)
- Safety Function: S (Built-in STO)
- Installation Type: A (Standard)
- Version Type: A (Standard)
RFI Jumper Configuration
The RFI (Radio Frequency Interference) jumper is crucial for EMC performance and surge protection.
- Varistors/MOVs are connected phase to phase and phase to ground to protect against surges.
- Removing the RFI jumper disconnects internal capacitors from ground, which can damage circuits and increase ground leakage current.
- If the drive has a built-in EMC filter, the RFI jumper connects filter capacitors to ground. Removing it can reduce the effectiveness of the filter.
- For single drives with built-in EMC filters, removing the RFI jumper may trigger a Residual Current Device (RCD).
To remove the RFI Jumper:
Diagram: Visual guide for locating and removing the RFI jumper for Frame A-F and Frame B-F models.
- Loosen the screw and remove the RFI Jumper (as shown in the diagram).
- Fasten the screw again after the RFI Jumper is removed.
- For Frame B-F models (with built-in EMC filter), remove the RFI Jumper with a screwdriver.
Screw Torque: 4-6 kg-cm / [3.5-5.2 lb-in.] / [0.39-0.59 Nm]
Grounding Instructions
Proper grounding is essential for safety and EMC compliance.
- Ensure the drive is properly grounded during installation.
- Cable diameters must comply with local safety regulations.
- Shielded cables must be connected to the ground of the drive.
- Shield of shielded power cables can only be used as the ground for equipment when the aforementioned points are met.
- When installing multiple drives, do not connect them in series; connect each drive to ground individually.
Important points regarding ground connection:
Diagram: Examples of correct and incorrect grounding setups for various AC systems.
Floating Ground System (IT Systems):
In an IT system (ungrounded system or high impedance/resistance), observe the following:
- Disconnect the RFI Jumper.
- Check for excess electromagnetic radiation affecting nearby low-voltage circuits.
- If necessary, install an extra electrostatic shielded cable on the power supply side between the main circuit and the control terminals to increase security.
- Do not install an external EMC filter. The EMC filter is connected to ground through the filter capacitors, which can damage the drive in an IT system.
DC Reactor Installation
A DC reactor can improve power factor, reduce input current, and reduce interference. It stabilizes the DC-bus voltage. For 115V models, no DC choke is needed.
Diagram: Wiring connections for an optional DC reactor and brake resistor.
The DC reactor is installed between terminals +1 and +2. The jumper shown in the diagram needs to be removed before installation.
Note:
- It is recommended to install a protective circuit breaker to protect the system from damage.
- When a fault occurs, use the circuit breaker to shut off power.
- RB and RC are multi-function relay contacts.
Operating Instructions
The Delta MS300 series features a user-friendly digital keypad for control and parameter settings. The main control buttons include RUN, STOP/RESET, MODE, and ENTER, along with arrow keys for navigation and a potentiometer for speed adjustment.
Image: Front panel of the Delta MS300 frequency converter showing control buttons and display.
For detailed parameter settings and advanced operation modes, please refer to the comprehensive user manual available from Delta Electronics.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your Delta MS300 frequency converter.
- Cleaning: Keep the unit clean and free from dust and debris. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
- Ventilation: Ensure proper airflow around the unit. Regularly check that ventilation openings are not obstructed.
- Connections: Periodically check all wiring connections for tightness and signs of corrosion. Loose connections can lead to overheating or malfunction.
- Environmental Conditions: Operate the drive within its specified environmental conditions (temperature, humidity, altitude) to prevent premature failure.
- Inspection: Visually inspect the unit for any signs of damage, discoloration, or unusual odors. If any issues are detected, power off the unit immediately and consult a qualified technician.
WARNING: Always disconnect power and wait at least 10 minutes for capacitors to discharge before performing any maintenance or inspection.
Troubleshooting
This section provides general guidance for common issues. For detailed error codes and advanced troubleshooting, refer to the full Delta MS300 user manual.
Common Issues and Solutions:
- Drive does not power on:
- Check the main power supply and circuit breaker.
- Verify all power connections are secure.
- Ensure the input voltage matches the nameplate specifications.
- Motor does not run:
- Check motor wiring for correct connections (U/T1, V/T2, W/T3).
- Verify control signals (RUN command) are active.
- Check for any error codes displayed on the keypad.
- Ensure parameters are set correctly for the motor and application.
- Over-current or Over-voltage fault:
- Check for sudden load changes or mechanical issues with the motor/load.
- Verify acceleration/deceleration times are appropriate for the application.
- Ensure input voltage is stable and within limits.
- Consider installing a DC reactor if surge voltage is an issue (refer to DC Reactor Installation section).
- RFI/EMI interference:
- Ensure proper grounding as per instructions.
- Use shielded motor cables and ensure shields are properly grounded.
- Verify RFI jumper is correctly installed or removed based on system requirements.
Specifications
The Delta MS300 series frequency converters are available in various power ratings and configurations. Below are general specifications and dimensions.
General Product Specifications
| Attribute | Value |
|---|---|
| Brand Name | Svit SensoPlan by Trumsense (Delta) |
| Model Number | Delta MS300 Series Converter |
| Output Power | 1 - 200 KW (various models) |
| Type | DC/AC Inverters |
| Weight | Approx. 2 kg (varies by model) |
| Origin | Mainland China |
| Certification | None (as listed, typically UL, CE, etc. are present on product) |
DC Reactor Dimensions and Specifications
Diagram and Table: Dimensions and electrical specifications for various DC reactor models.
Motor Cable Length Guidelines
The length of the motor cable can affect performance and measurements. Longer cables can increase leakage current and surge voltage.
Table: Recommended maximum shielded and non-shielded cable lengths for different VFD models, compliant with IEC 60034-17.
To prevent issues with long motor cables:
- Use a motor with enhanced insulation.
- Connect an output reactor (optional) to the output terminals of the AC motor drive.
- Reduce the motor cable length to the values provided in the table.
Product Dimensions (by Frame Size)
Dimensions vary by the drive's frame size. Refer to the diagrams below for specific measurements (Unit: mm [inch]).
Diagram: Dimensions for Frame A models (e.g., VFD1A6MS11ANSAA).
Diagram: Dimensions for Frame B models (e.g., VFD7A5MS23ANSAA).
Diagram: Dimensions for Frame C models (e.g., VFD4A8MS11ENSAA).
Diagram: Dimensions for Frame D models (e.g., VFD25AMS23ANSAA).
Diagram: Dimensions for Frame E models (e.g., VFD33AMS23ANSAA).
User Tips
- Always double-check wiring before applying power to avoid damage.
- Start with low speeds during initial setup and gradually increase to desired operating speed.
- Refer to the detailed model name and serial number information to ensure you have the correct unit and specifications for your application.
Warranty and Support
This Delta MS300 series frequency converter is manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the official Delta Electronics warranty policy or contact your authorized distributor.
For technical support, service, or further inquiries, please contact Delta Electronics customer service or your local support center. Ensure you have your product model and serial number ready when seeking support.
Official documentation and software updates may be available on the Delta Electronics website.
