Widely used for stage / KTV dimming, single‑phase motor speed control, rectification, and heating power control. Compatible with resistive, inductive and IR infrared lamp loads as well as DC power supplies, electrolytic and electroplating power sources.
Key Features
✅ Integrated Phase‑angle & Zero‑crossing Control, Rectifier‑capable Supports both phase‑angle voltage regulation and variable‑period zero‑crossing power control, freely switchable. Capable of rectification, offering constant‑current, constant‑voltage and constant‑power control modes to suit different load characteristics.
✅ Multiple Standard Control Signal Inputs Accepts 4‑20mA, 0‑10mA, 0‑5V, 0‑10V, 1‑5V, 2‑10V and PWM standard signals (120Ω input impedance @4‑20mA). Four given modes - external potentiometer, analog signal, panel keys and communication digital given - are selectable for flexible integration.
✅ Soft‑start & Soft‑stop Protection Soft‑start / soft‑stop time adjustable 0‑360s to suppress inrush current at power‑on. Supports internal voltage regulation, slope adjustment, base‑point adjustment and manual control for refined process control.
✅ Comprehensive Multi‑level Protection Built‑in over‑voltage and over‑current protection, current / voltage limiting, internal over‑temperature alarm and heater‑break alarm. Current‑limit range 20‑110%, adjustable alarm thresholds; electronic over‑current protection; fault reset via run/stop switch or power cycle.
✅ True‑RMS Display & Modbus RTU Communication Optional true‑RMS voltage / current / power display (phase A/B/C current, voltage, power independently configurable). Standard Modbus RTU communication enables remote read / write of output power, load voltage, current and power, communication start‑stop control and fault reset for remote monitoring and system networking.
✅ Wide Voltage Range & Reliable Electrical Performance Load rated voltage supports 110V / 220V / 380V / 440V. Insulation resistance ≥20MΩ (500V DC); dielectric strength 2000V AC / 1min (220V), 2500V AC / 1min (380V). Compact dimension 115 × 105 × 73mm for easy panel mounting.
Main Specifications
| Item | Specification |
|---|---|
| Series | DK COMPACT True‑RMS Controller (AC voltage regulation) |
| Control Signal Input | 4‑20mA, 0‑10mA, 0‑5V, 0‑10V, 1‑5V, 2‑10V, PWM; manual given |
| Input Impedance | 120Ω (at 4‑20mA input) |
| Load Rated Voltage | 110V / 220V / 380V / 440V |
| Control Mode | Phase‑angle voltage + zero‑crossing power integration; constant‑current / voltage / power |
| Suitable Loads | Resistive, inductive, IR infrared lamp; DC, electrolytic, electroplating power supplies |
| Communication | Standard Modbus RTU |
| Soft‑start Time | 0‑360s adjustable |
| Output Voltage Range | 0‑98% of input voltage |
| Output Resolution | 0.2° |
| Protection | Over‑voltage, over‑current, current / voltage limiting, over‑temperature, heater‑break alarm |
| Current Limit | 20‑110% adjustable |
| External Voltage Control | Internal voltage regulation / 0‑100% |
| Slope / Manual / Base‑point Adjustment | 0‑100% |
| Operating Temperature | -10~45℃ |
| Humidity | ≤90%RH |
| Insulation Resistance | ≥20MΩ (500V DC) |
| Dielectric Strength | 2000V AC/1min (220V); 2500V AC/1min (380V) |
| Dimension | 115 × 105 × 73 mm |
| Mounting Dimension | 105 × 70 mm |
| Reset | Run/stop switch or power cycle |
Ordering Code (DK COMPACT‑4MA20‑5A‑380‑50‑380‑P‑10‑S)
| Segment | Meaning | Options |
|---|---|---|
| Control Signal | 4MA20/0MA20/0MA10/0V5/1V5/0V10/2V10/PWM/M/* | 4‑20mA,0‑20mA,0‑10mA,0‑5V,1‑5V,0‑10V,2‑10V,PWM,manual,special |
| Rated Current | 0‑15A | 0‑15A (fan required above 8A) |
| Load Voltage | 110/220/380/440 | 110V/220V/380V/440V |
| Frequency | 50/60 | 50Hz/60Hz |
| Control Supply | 380/220 | 380V/220V |
| Voltage / Power Mode | P/Z | P=voltage (phase‑angle); Z=power (zero‑crossing) |
| Soft‑start Time | 0‑360 | 0‑360s |
| Communication / Display | N/S/S2 | N=none; S=display (true‑RMS); S2=communication+display |
Typical Applications
Stage & KTV dimming; single‑phase motor speed control; rectification & DC / electrolytic / electroplating power; heating power control (resistive, inductive, IR infrared lamp loads); industrial furnace & oven power regulation; retrofitting projects replacing imported modules.
Note: fan cooling required for models above 8A. OEM & ODM customization available.
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