• 4-channel 4 ~ 20mA Current Input to 4-channel PWM Output
  • Accuracy: ±0.1% of Full Range
  • Easy PWM Frequency configuration
  • 4kV ESD and EFT Protection
  • 2.7-inch LCD simultaneously displays PWM signal duty ratio and frequency
  • 4-button easy configuration of PWM signal


The SG-3784M is a 4-channel DC current input signal conditioning module which can convert  4 ~ 20 mA current input to PWM output. This provides an economical solution when the 4 to 20mA current need to be converted to PWM output. The duty cycle, 0% to 100%, of the PWM output is a linear transformation of the 4 to 20mA current input.  The frequency of the PWM signal can be in the range 600Hz to 800Hz and it can be adjusted by buttons. 
The SG-3784M includes a monochrome graphic LCD display which shows the duty cycle and frequency of the 4-channel PWM output signals. 4 kV ESD and 4 kV EFT protection are also provided to enhance noise protection capabilities in industrial environments.


  • Heating system in buildings
  • Ventilation system
  • Controlling servo-assisted diaphragm valve


 Type Monochrome Graphics LCD (46x48 mm Viewing Area)


 EMS Protection
 EFT (IEC 61000-4-4) ±4 kV for Power Line
 ESD (IEC 61000-4-2) ±4 kV Contact for each Terminal


 LED Indicators
 Status 1 x Power and Communication


 Analog Input
 Channels 4
 Range +4 ~ +20 mA
 Accuracy ±0.1% of full range
 Bandwidth 1 kHz
 Input Impedance 137 Ω


 Channels 4
 Type PWM
 Sink/Source (NPN/PNP) Source
 Frequency 600 ~ 800 Hz
 Duty Cycle 1 to 100%
 Mode Continuous


 Reverse Polarity Protection Yes
 Input Range +10 ~ +30 VDC
 Consumption 0.1 W (Typ.)
96.2 W Max. (Note1)


 Dimensions (mm) 97 x 121 x 36 (W x L x H)
 Installation DIN-Rail or Wall Mounting


 Operating Temperature -25 ~ +75 °C (-13 to 167 ℉)
 Storage Temperature -40 ~ +85 °C (-22 to 176 ℉)
 Humidity 10% ~ 95% RH, Non-condensing



SG-3784M     CR  4-channel DC Current Signal Input to 4-channel PWM Output Module (RoHS) 1