Equipped with multi‑language LCD local operation panel, it accepts multiple analog input signals. Dual communication interfaces including RS485 Modbus‑RTU and optional Modbus‑TCP Ethernet. Built‑in 5‑channel digital‑input DI, 3‑channel configurable DO and 2‑relay alarm outputs. Real‑time measurement of DC voltage, current and power with analog re‑transmission output. Comprehensive multi‑level fault protection makes it well‑suited for high‑power DC‑process such as electroplating, electrolysis and excitation power supply. It seamlessly connects with PLC and SCADA host system for local operation and remote network monitoring.
Key Features
☑️ Three‑phase full‑wave rectification & multi‑closed‑loop control Three‑phase AC to adjustable DC output via phase‑shift firing. Open‑loop / constant‑voltage(V) / constant‑current(I) / constant‑power(VI) control modes are available. DC output ranges from 0‑98% of input voltage, resolution 0.2°, three‑phase trigger unbalance ≤0.6° for stable DC output.
☑️ Multiple input signals & various setpoint sources Supports 4‑20mA, 0‑20mA, 0‑10mA, 0‑5V, 1‑5V, 0‑10V, 2‑10V, PWM, 10K potentiometer, local keypad and remote communication setpoint. Input impedance:120Ω for 4‑20mA signal. Compatible with temperature controllers and PLC.
☑️ Soft‑start & soft‑stop for load protection Soft‑start time adjustable 0‑360s; soft‑stop 0‑60s configurable, suppress in‑rush current and protect power semiconductors and DC loads.
☑️ Flexible I/O for field interlock logic 5‑channel DI for soft‑start/soft‑stop toggle, signal‑source selection and fault reset; 3 configurable DO; 2 relay outputs for alarm and fan control. User‑defined status and fault interlock logic.
☑️ Voltage / Current / Power Measurement & Analog Transmit Output Real‑time sampling of DC voltage, current and power. Analog retransmission selectable:0‑20mA,4‑20mA,0‑5V,1‑5V,0‑10V,2‑10V for recorder or host‑system data acquisition.
☑️ Dual‑port Modbus communication for system integration Standard Modbus‑RTU over RS485; optional Modbus‑TCP Ethernet. Support parameter read‑write, remote start‑stop, real‑time data and historical alarm reading. Compatible with mainstream SCADA software without secondary development. Multi‑language LCD panel displays runtime values and alarm history locally.
☑️ Comprehensive multi‑layer protection Fast‑fuse protection, Hall‑sensor over‑current protection, phase‑loss, over‑voltage and SCR over‑temperature protection. Response time <20ms. Thresholds for over‑current / over‑voltage are configurable. Fault relay output; reset via keypad or communication command.
☑️ High‑current grades, industrial forced‑air cooling Rated current 0‑3000A, DC output up to 0‑542VDC. Forced‑air cooling. Multiple control‑supply options: DC24V / AC110V / AC220V / AC380V.
Main Specifications
表格
| Item | Specification |
|---|---|
| Model | JT3000DC Series Three‑phase Full‑wave Rectifier Controller |
| Core Hardware | High‑speed digital MCU, imported SCR thyristor modules |
| Control Modes | Phase‑shift trigger; Open‑loop / Constant‑V / Constant‑I / Constant‑VI closed‑loop |
| Control Input | 4‑20mA,0‑20mA,0‑10mA,0‑5V,1‑5V,0‑10V,2‑10V,PWM, potentiometer, keypad, communication |
| Input Impedance | 120Ω (4‑20mA input) |
| DC Output Range | 0‑542VDC |
| Rated Current | 0‑3000A; custom above 1200A |
| Output Regulation | 0‑98% of input voltage; resolution 0.2°; unbalance ≤0.6° |
| Soft‑start / Soft‑stop | 0‑360s soft‑start; 0‑60s soft‑stop adjustable |
| I/O | 5DI, 3 configurable DO, 2 relay outputs (250VAC 2A contact) |
| Transmit Output | 0‑20mA /4‑20mA /0‑5V /1‑5V /0‑10V /2‑10V (V/I/Power selectable) |
| Communication | Standard Modbus‑RTU(RS485); optional Modbus‑TCP Ethernet |
| Protection | Fast‑fuse, Hall‑sensor over‑current, phase‑loss, over‑voltage, SCR overtemperature; response＜20ms |
| Display | Multi‑language LCD, runtime data & historical alarm log |
| Control Power | DC24V / AC110V / AC220V / AC380V optional |
| Cooling | Forced air cooling |
| Insulation | 20MΩ @500VDC; Dielectric strength:2000VAC 1min(220V), 2500VAC 1min(380V) |
| Ambient | ‑10℃ ~ +50℃; ≤90%RH non‑condensing |
Ordering‑code Example
JT3000DC‑3PH‑4MA20‑200A‑DC‑F‑2S‑542‑50‑220‑P‑20‑4MA20 Series |Signal |Rated Current |Load Type |Protection |Comm |DC‑Voltage |Frequency |Control‑Supply |Control‑Mode |Soft‑start |Transmit‑Output
Typical Applications
☑️ DC power rectification for electroplating and electrolysis industry ☑️ Excitation power supply control for industrial electromagnetic equipment ☑️ DC test power source & material‑testing bench power regulation ☑️ DC closed‑loop power control for metallurgy & chemical‑process equipment ☑️ High‑power DC execution unit for PLC / SCADA integrated automation system ☑️ Petrochemical, textile & paper‑making high‑power DC power‑control scenarios ☑️ Machine‑retrofit projects as drop‑in replacement for imported rectifier power units
Selection & Usage Notes
☑️ Mount vertically, reserve clearance on both sides for heat dissipation. De‑rate to 70% capacity under high‑temperature & poor‑ventilation conditions. ☑️ Tighten all main‑circuit wiring terminals to avoid high‑current arcing. Protective earth terminal must be reliably grounded. ☑️ Historical alarm logs can be retrieved via local panel or communication for on‑site troubleshooting. ☑️ Custom solutions for current above 1200A are available. OEM & ODM customization supported.
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