• Option: No option
• Rated load current: 250A
• Size: 250 to 350A
• Number of phase: 3-phase
• Power supply: 380VAC
• Environment Ambient temperature: -10 to 50℃, storage: 20 to 80℃

The DPU series digital power controllers offer optimal and stable power control with minimal noise interference. The units also feature various control methods and functions including soft start, soft up/down, and alarm.

• Various controls
• Phase control, feedback control (constant voltage/constant current/constant power)
• Zero crossing cycle control (fixed/variable cycles)
• Zero crossing ON/OFF control
• Communication output model: RS485 (Modbus RTU)
• Various control inputs and DI inputs
• Control input: analog (current, voltage), ON/OFF (voltage pulse, no voltage), communication (RS485), potentiometer
• DI input: AUTO/MAN switching, RUN/STOP switching, Reset, output holding, SP designation (6 setting points can be customized)
• Various alarm output
• Overcurrent, overvoltage, fuse break, heat sink overheat, device fault, heater break alarm (partial heater break detection)
• Applicable load
• Supercantal, platinum, molybdenum, carbon, halogen lamps, chrome, nickel, etc.

Convenient Installation with Remote Display

Users can remotely monitor and control the units by installing the remote display unit in separate control panels.

Various Control Methods

Zero cross ON/OFF control, standard control, feedback control, and zero cross cycle control (fixed/variable cycle) are available for stable load control.

Maintains constant output voltage relative to the control input when there is a change in power supply or load resistance of loads with low temperature coefficient of electrical resistance (iron, chrome, nichrome, etc.)

Maintains constant output current relative to the control input when there is a change in power supply or load resistance of loads with high changes (6 to 12 times normal temperature) in temperature coefficient of electrical resistance (platinum, molybdenum, tungsten, etc.)

Maintains constant power supply relative to the control input when there is a change in power supply or load resistance. Ideal for large heaters with high changes in resistance due to overheating such as silicon carbide (SiC).

The load power repeats ON/OFF control during a fixed cycle (60 cycles) in relation to the control input signal.

Example) Fixed cycle (60 cycles) control - control output at 40%

Minimal number of cycles are used as AC sine wave repeats ON/OFF control in relation to the control input signal

Example) Variable cycle control - control output at 40%

Various user friendly functions are available including soft start, slow up/slow down, input/output slope correction, multi-SP (setting point), full load auto recognition, and more.