AuCom Soft Starter EMX3 Features

Starting Functions

  • XLR-8 adaptive acceleration
  • Constant current start mode
  • Current ramp start mode
  • Kickstart

Stopping Functions

  • XLR-8 adaptive deceleration
  • TVR soft stop
  • Brake mode
  • Coast to stop


  • Remote mounting option
  • Status LEDs
  • Easy to read screen
  • Real language feedback
  • Multi-language options
  • Shortcut buttons


  • Fully customisable protection
  • Motor thermal model
  • Motor thermistor input
  • Phase sequence
  • Undercurrent
  • Instantaneous overcurrent
  • Auxilary trip input
  • Heatsink overtemperature
  • Excess start time
  • Supply frequency
  • Shorted SCR
  • Power circuit
  • Motor connection
  • RS485 failure
  • Motor overload
  • Current imbalance
  • Ground fault (optional)

Additional Features

  • Starter communication timeout
  • Network communication trip
  • Auto detection of inline or inside delta power connection
  • Programmable auto start/stop
  • 24 VDC auxiliary power supply
  • PT100 (RTD) input
  • Real time clock with battery backup
  • Powerthrough – enables the choice of continuous operation despite a power assembly failure. This allows production to continue while long-term remedial action can be taken.
  • Forward and reverse jog function
  • I/O expansion card (optional)
EMX3 Specifications



Current Range23 A ~ 1600 A (nominal)
Motor connectionIn-line or inside delta
BypassIntegrated internal or external
Mains Voltage (L1, L2, L3)
EMX3-xxxx-V4200 ~ 440 VAC (± 10%)
EMX3-xxxx-V7380 ~ 600 VAC (± 10%)
EMX3-xxxx-V7 .. 380 ~ 690 VAC (± 10%) (earthed star supply system only)
Control voltage (A1, A2, A3)110 ~ 210 VAC (+ 10% / -15%)
or 220 ~ 440 VAC (+ 10% / -15%)
24 VAC/VDC (± 20%)
Mains Frequency45 Hz to 66 Hz
InputsActive 24 VDC, 8 mA approx.
Start (C23, C24)Normally open
Stop (C31, C32)Normally closed
Reset (C41, C42)Normally open or closed
 Programmable Inputs
Input A (C53, C54)Normally open or closed
Input B (C63, C64)Normally open or closed
Motor Thermistor (B4, B5)
PT100 RTD (B6, B7, B8)
Relay outputs10 A at 250 VAC resistive
5 A at 250 VAC, AC15 pf 0.3
 Run Relay (23, 24)Normally Open
Programmable Outputs
 Relay A (13, 14)Normally Open
 Relay B (31, 32, 34)Changeover
 Relay C (41, 42, 44)Changeover
 Analog Output (B10, B11)0-20 mA or 4-20 mA
 24 VDC Output (P24, COM)200 mA
 EMX3-0023B ~ EMX3-0105BIP20
EMX3-0145B ~ EMX3-1600CIP00
 Operating temperature (with derating)-10 °C ~ 60 °C
 Storage temperature– 10 °C ~ 60 °C
Humidity5% to 95% Relative Humidity





The internal bypass feature is included only on units with the suffix ‘B’.

The internal bypass feature is included only on units with the suffix ‘B’.

1:    Control voltage (model dependent)
2:    Remote control inputs
3:    Motor thermistor
4A:  RTD/PT100 input (2-wire)
4B:  RTD/PT100 input (3-wire)
4C:  RTD/PT100 input (4-wire)
5:    24 VDC output
6:    Relay outputs
7:    Analog output

© 2015 AuCom Electronics Ltd. As AuCom is continuously improving its products it reserves the right to modify or change the specification of its products at any time without notice. The text, diagrams, images and any other literary or artistic works appearing in this brochure are protected by copyright. Users may copy some of the material for their personal reference but may not copy or use material for any other purpose without the prior consent of AuCom Electronics Ltd. AuCom endeavors to ensure that the information contained in this brochure including images is correct but does not accept any liability for error, omission or differences with the finished product.

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