The series offers three configurations: JD‑1PH (single‑phase), JD‑2PH (three‑phase two‑control) and JD‑3PH (three‑phase full‑control / rectifier), with rated current from 20A to 3000A and load voltage from 100V to 1140V. It supports voltage regulation, power regulation, rectification and excitation applications. Control modes include manual/auto, constant‑current, constant‑voltage and constant‑power. Comprehensive protection covers over‑current, over‑voltage, phase‑loss, SCR over‑temperature and emergency stop. Standard MODBUS RTU communication, with optional PROFIBUS DP and MODBUS TCP, makes it widely applicable to industrial heating, heat‑treatment furnaces, IR heating, rubber & plastic machinery, chemical reactors, electroplating/electrolysis power supplies and excitation speed control.
Key Features
☑️ Integrated Phase‑angle & Zero‑crossing Control Both smooth continuous phase‑angle triggering and zero‑crossing cycle control are integrated in one unit, switchable by load type. Phase‑angle mode delivers stable output with no current fluctuation, suitable for resistive, inductive and IR lamp loads; zero‑crossing mode produces no harmonic interference, ideal for pure resistive loads.
☑️ Multiple Control Modes Supports manual/auto, constant‑current, constant‑voltage and constant‑power control. Linearized program control with drift‑free output; RISC‑V architecture MCU ensures long‑term system reliability.
☑️ Wide Range of Control Signal Inputs Accepts 4‑20mA, 0‑20mA, 0‑10mA, 0‑5V, 1‑5V, 0‑10V, 2‑10V and PWM standard signals; supports panel manual setpoint, external potentiometer setpoint and RS485 communication digital setpoint, compatible with PLC, temperature controllers and host computers.
☑️ Soft‑start & Soft‑stop Protection Power‑on soft‑start with adjustable time 0‑360s effectively suppresses inrush current; soft‑stop function avoids sudden load power‑off shock, extending the service life of heating elements, transformers and motors.
☑️ Voltage / Current / Power Analog Transmitter Output Optional retransmission of real‑time voltage, current or power as standard analog output (0‑20mA / 4‑20mA / 0‑5V / 1‑5V / 0‑10V / 2‑10V), convenient for data acquisition by host computers, recorders and SCADA systems.
☑️ Adaptive Mains Frequency 47‑63Hz Automatically adapts to mains frequency from 47Hz to 63Hz, suitable for generator‑powered and frequency‑unstable sites, ensuring safe and reliable operation regardless of grid frequency fluctuation.
☑️ Multiple Industrial Communication Protocols Standard MODBUS RTU; optional PROFIBUS DP fieldbus for DCS integration; optional MODBUS TCP Ethernet communication to meet diverse industrial automation system requirements.
☑️ Comprehensive Protection & Emergency Stop Built‑in SCR over‑temperature detection, mains phase‑loss protection, precision‑transformer current limiting & over‑current protection, over‑voltage alarm and fault detection; fault emergency stop automatically cuts output to protect equipment and personnel.
☑️ Wide Load Voltage & High‑current Customization Load operating voltage range 30‑1140V (1140V models require high‑voltage isolated driver board); rated current 20A‑3000A, with custom options above 1500A, covering power‑regulation needs from small heating devices to large industrial furnaces.
Main Specifications
| Item | Specification |
|---|---|
| Series | JD‑1PH (single‑phase) / JD‑2PH (three‑phase two‑control) / JD‑3PH (three‑phase full‑control / rectifier) |
| Control Core | RISC‑V architecture high‑speed MCU |
| Control Mode | Phase‑angle (P) / Zero‑crossing cycle (Z) / Constant‑voltage (U) / Constant‑current (I) / Constant‑power (UI) |
| Control Signal Input | 4‑20mA, 0‑20mA, 0‑10mA, 0‑5V, 1‑5V, 0‑10V, 2‑10V, PWM, panel manual, potentiometer, RS485 digital setpoint |
| Rated Current | 20A‑3000A (custom above 1500A) |
| Load Voltage | 100V, 220V, 380V, 440V, 480V, 660V, 690V, 1140V (HV isolated driver board required for 1140V) |
| Load Wiring | 3D delta, 3S star (floating neutral), 4S star (grounded neutral), 6D six‑wire inner delta, AC/DC single‑phase |
| Mains Frequency | Adaptive 47‑63Hz (50/60Hz standard) |
| Controller Supply | 380V AC / 220V AC / 110V AC / 24V DC (optional no‑supply or factory‑wired) |
| Soft‑start Time | 0‑360s adjustable (factory default 10s), with soft‑stop |
| Transmitter Output (opt.) | 0‑20mA / 4‑20mA / 0‑5V / 1‑5V / 0‑10V / 2‑10V for voltage/current/power |
| Communication | Standard MODBUS RTU; optional PROFIBUS DP, MODBUS TCP |
| Protection | Over‑current, over‑voltage alarm & fault detection; SCR over‑temp; phase‑loss; current limiting; emergency stop |
| Display | LED digital display (S/S2/SF/TCP models) |
| Cooling | Self‑cooling (low current), forced fan‑cooling (high current) |
Ordering Code Example
JD‑3PH‑4MA20‑30A‑3D‑F‑S‑380‑50‑380‑P‑10‑4MA20‑3FB‑XXX
Series | Control Signal | Rated Current | Load Wiring | Protection | Comm/Display | Load Voltage | Frequency | Controller Supply | Control Mode | Soft‑start Time | Transmitter Output | Board Model | Special Notes
Typical Applications
☑️ Industrial heat‑treatment, annealing, quenching and sintering furnace power control
☑️ IR infrared heating, ovens, drying equipment, hot‑press forming machines
☑️ Rubber & plastic machinery, extruders, injection molding machine heating zones
☑️ Chemical reactors, pharmaceutical drying equipment temperature closed‑loop control
☑️ Electroplating, electrolysis, DC power supply rectification
☑️ Generator‑powered and frequency‑unstable sites power control
☑️ Transformer, motor soft‑start and excitation speed control
☑️ Glass, ceramic, building materials kiln industrial heating
☑️ DCS / SCADA system integration, remote power setpoint & data acquisition
Selection & Usage Notes
☑️ Select rated current at 1.2× actual load current; modify matching parameters if load changes to avoid equipment damage
☑️ Main circuit wiring sequence: mains input → air circuit breaker → contactor → power regulator → load; tighten all wiring nuts to prevent arcing and connector burn‑out
☑️ Air switch cuts power during maintenance for equipment and personnel safety; contactor automatically cuts power when regulator faults
☑️ 1140V high‑voltage models require HV isolated driver board with enlarged dimensions
☑️ Phase‑angle control may generate harmonics; for harmonic‑sensitive sites use zero‑crossing cycle mode (pure resistive loads only)
☑️ OEM & ODM customization available; high‑current models above 1500A can be customized
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