
Digital Thyristor Unit
E-3
A. Recorder
B. Indicator
C. Converter
D. Controller
E. Thyristor
unit
F. Temp.
sensor
G. Pressure
transmitter
H. Temp.
transmitter
I. Thermometer
J. Pressure
gauge
K. Accessories
DPU
DPUS
■Size type
1-phase
3-phase
Size Current
capacity WH D P1P2
Allowable cable
thickness
A0 to 70 A 97 260 170 82 150 Max. 4
B80 to 200 A 140280 174 127 150 Max. 4/0
C250 to 350 A 213 338 179 193 200 Max. 300MCM
D400 to 600 A 278 418 212 261 200 Max. 500MCM
Size Current
capacity WH DP1 P2 Allowable cable
thickness
A0 to 50A 140 306 200 127 150 Max. 4
B70 to 200A 213 365 217 195 200 Max. 4/0
C250 to 350A 278 450 227.5 261 200 Max. 300MCM
D400 to 600A 427 528 275.5 405 330 Max. 500MCM
(unit: mm) (unit: mm)(unit: AWG) (unit: AWG)
※1. Variable cycle control is only for 1-phase model.
※ Environment resistance is rated at no freezing or condensation.
Series DPU
Number of phases 1-phase 3-phase
Power supply 110 VAC / 220 VAC / 380 VAC / 440 VAC (FAN and control power 220 VAC 50/60 Hz separately)
Allowable voltage 90 to 110% of rated voltage 85 to 115% of rated voltage
Rated frequency 50/60 Hz (auto recognition), allowable frequency range:±2 Hz
Min. load current 1 A
Output range Phase control : 5 to 98%, Z.C. control : 0 to 100%
Control method※1
• Phase control : Normal control(Non-Feedback), static voltage/static current/static power control(Feedback)
• Cycle control(Z.C.) : Fixed cycle control, Variable cycle control
• ON/OFF control(Z.C.)
Load • Phase control : resistance load, inductive load
• ON/OFF, Cycle control : resistance load
Power consumption Max. 7 W (except FAN operation power) Max. 10 W (except FAN operation power)
Display method
• Display value and SV display : 7Segment 4digit
• Status display : 4LED
• Display value percentage display : 11LED Bar
• Display value and SV display : 7Segment 4digit
• Status display : 6LED
• Display value percentage display : 11LED Bar
Output accuracy
• Static voltage feedback control : Within ±3% F.S. of rated voltage(within variable ±10% F.S. of rated voltage)
• Static current feedback control : Within ±3% F.S. of rated voltage(within variable 1 to 10 times of rated resistance)
• Static power feedback control : Within ±3% F.S. of rated voltage(within variable ±10% F.S. of rated voltage and within
variable 1 to 10 times of rated resistance)
• Normal control : within ±10% F.S. of rated voltage
Set method By front keys, By communication
Control input
• Auto: 4-20 mA / 0-20 mA / 0-5 VDC / 1-5 VDC / 0-10 VDC /
voltage pulse(0/12 VDC) / no-voltage input(ON/OFF) / communication input(RS485)
• Manual: inside 10 kΩVR, outside 3 to 10 kΩVR (min. 2 W)
Digital input(DI) AUTO/MAN switching, RUN/STOP switching, RESET, Output holding, SP setting (SP1 to 6)
Display content Control input, load voltage, load current, load power, load resistance, power supply frequency
Min. display output Min. 2.5% of rated voltage/current
Option output RS485 communication output(Modbus RTU method), [max. 32 units]
Dielectric strength 2000 VAC 50/60 Hz for 1 min.(between input terminal and power terminal)
Vibration 0.75 mm amplitude at frequency of 5 to 55 Hz (for 1 min.) in each of X, Y, Z directions for 2 hours
Insulation resistance Min. 200 MΩ(at 500VDC megger)
Noise resistance Square shaped noise by noise simulator (pulse width 1 ㎲) ±2 kV
Environ-
ment
Ambient
temperature
10 to 50 ℃, storage : 20 to 80 ℃
Ambient
humidity
5 to 90%RH
Approval
Unit weight • A Size : 3.0 kg
• B Size : 5.5 kg
• C Size : 11.0 kg
• D Size : 17.5 kg
• A Size : 6.5 kg
• B Size : 11.5 kg
• C Size : 20.0 kg
• D Size : 35.5 kg
Specifications