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Three Phase Advanced SCR Power Regulator

The MW30E series is an advanced, three-phase power regulator (current range: 25–1500A), Suitable for both resistive and inductive loads

1. Rating from 25A all the way up to 1500A
2. 0-5V/0-10V/0-20mA/4-20mA analog input, 3 digital inputs, 1 digital output, Modbus-RTU
3. Phase angle firing control mode or burst-firing mode configurable
4. Work with load on Star, Delta or Star with netural wire
5. Modbus RS-485 available as default, other communication like profibus DP, Ethernet can be custom made
6. Different control mode, Constant Voltage (V) / Constant Current (I) / Constant Power (P)/Open-loop
7.100% load can be applied to the SCR according to the rating, for example, 100 amps rating SCR, you can apply 100 amps to phase current. there is no need to take the derating into consideration

Brand:
PIDMaxWell
Item no.:
MW30E
Payment:
T.T, Credit Card, Paypal etc, to be negotiate
Product origin:
Made In China
Color:
Grey
Goods stock:
10
Min order:
1
Lead Time:
One week after payment

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MW30E Three Phase SCR Power Regulator

Key Features

•Advanced Digital Control: Fully digital structure with a highly stable microprocessor and advanced SMT soldering process, ensuring reliable and precise control of resistive and inductive heating loads.

•Versatile Control Modes: Supports multiple control methods including constant output voltage, constant output current, constant output power, open-loop control, phase-shift control, and zero-crossing power control to suit various application requirements.

•Universal Analog Input Compatibility: Flexible analog input interfaces supporting 0–5V, 0–10V, 4–20mA, and -20mA signals, allowing seamless integration with most PLCs and temperature controllers.

•Comprehensive Protection Functions: Built-in safeguards against phase loss, overcurrent, thyristor overheating (alarms and stops at >85°C), and load disconnection, ensuring maximum safety for both the regulator and connected equipment.

•Robust Industrial Design: Professional heat dissipation design suitable for harsh industrial environments, with strong anti-interference immunity.

•Communication Ready: Standard RS-485 communication interface utilizing the Modbus-RTU protocol for remote monitoring, parameter adjustment, and integration into SCADA or DCS systems.

•Expandable Functionality: Supports optional modules for external display panels, true RMS detection, Ethernet/Profibus DP communication, temperature control, and online power allocation.

Technical Specifications

Feature	Specification
Product Series	MW30E Series
Load Phase	Three-phase
Main Circuit Power Supply	AC 260 ~ 440V
Control Power Supply	AC 160 ~ 240V
Power Supply Frequency	45 ~ 65Hz
Rated Output Voltage	0 ~ 98% of main circuit voltage
Rated Output Current Range	AC 25A ~ 3000A
Control Methods	Constant Voltage (V) / Constant Current (I) / Constant Power (P) / Open-loop / Any
Trigger Modes	Phase control, Full-wave control (Zero-crossing)
Accuracy / Resolution	Accuracy: ±1% / Resolution: 0.1%
Static Stability	±0.2%
Analog Inputs	0–5V, 0–10V, 4–20mA, -20mA
Digital Inputs / Outputs	3 Programmable Digital Inputs / 1 Digital Output (Relay)
Communication	Standard: RS-485 (Modbus-RTU); Optional: Ethernet, Profibus DP
Protection Functions	Phase loss, Overcurrent (>125%), Overheat (>85°C), Load disconnect
Operating Environment	-10°C to +50°C (Derating required above 45°C or >1000m altitude)
Humidity	20% ~ 90% RH (Non-condensing)

Size, Weight and options for Different ratings

Potential Applications

•Induction Melting & Heating: Precise power delivery for induction furnaces and melting applications.

•Heat Treatment Furnaces: Accurate temperature profiling for annealing, tempering, and hardening processes.

•Industrial Drying Ovens: Stable heat control for food processing, chemical drying, and textile curing.

•Glass & Ceramic Manufacturing: Reliable power regulation for high-temperature kilns and glass melting operations.

Ordering Information

Ordering Example

MW30E-250-P,

Documents and Dowloads

[PDF] MW30E Catalog and user manual

Q: What types of loads is the MW30E suitable for?
A: The MW30E is a highly versatile power regulator suitable for resistive, inductive, and capacitive loads, depending on the selected control mode. It is ideal for industrial heating elements, transformers (primary/secondary side control), and induction melting applications.

Q: Does the MW30E support constant current or constant voltage control?
A: Yes, the MW30E features advanced closed-loop PID adjustment that allows it to maintain either a constant output voltage, constant output current, or constant output power, automatically compensating for grid voltage fluctuations or changes in load impedance.

Q: Can I connect the MW30E to my existing PLC or SCADA system?
A: Absolutely. The MW30E comes standard with an RS-485 communication interface supporting the Modbus-RTU protocol. Optional expansion modules are also available for Ethernet and Profibus DP communication.

Q: How does the zero-crossing control mode benefit my application?
A: Zero-crossing control switches the power on and off precisely when the AC voltage crosses zero. This significantly reduces harmonic distortion and electromagnetic interference (EMI), while maintaining a power factor close to 1, making it an excellent choice for purely resistive loads.

Q: What happens if the regulator overheats or experiences an overcurrent?
A: The MW30E is equipped with comprehensive protection systems. If the current exceeds 125% of the rated value, it will trigger an overcurrent alarm and take protective action. Similarly, if the thyristor temperature exceeds 85°C, the unit will issue an alarm and halt output to prevent thermal damage.

Q: Can the display panel be mounted externally on a cabinet door?
A: Yes, an optional external display and operation panel (module code ED) is available. It can be connected via a standard network cable (up to 4 meters) and mounted on the cabinet door for convenient real-time data observation and parameter setting without opening the enclosure.

Q: What is the "Online Power Allocation" function mentioned in the catalog?
A: Online power allocation is an optional advanced feature designed for systems with multiple power regulators. It synchronizes the power distribution among connected devices to prevent simultaneous peak power draws, thereby improving bus current continuity and reducing the overall load on your electrical infrastructure.

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