RTU A200


The A200 is Ami Tech's indigenously designed and developed Remote Terminal unit, which form the life line of the SCADA solution. A200 acquires, monitors and controls data related to breakers, isolators, transformers, transducers, etc., in a substation. The firmware of A200 interfaces with the main control centre using various communication protocols compliant with IEC 60870-5-101/104, MODBUS, DNP3 and SPORT. A200 is also compliant with IEC 61850, IEC 60870-5-103 and acts as a gateway for various IEDs.

A200 is a scalable, modular and configurable remote terminal unit used extensively for a wide variety of applications in power, transportation, water, etc. It is capable of monitoring both digital and analog data, communicating with and controlling remote systems. A non-proprietary, open architecture system with high in-built security, designed and developed to work in tropical environment.

Key Features

  • 32 bit Industrial Grade CPU operating @ 300 MHz,256 MB SDRAM and 1 GB FLASH, 64 bit Data Bus.(Optional: expandable memory)
  • Built-in real-time clock and SOE buffer with battery backup.
  • Digital Inputs: Multiples of 16/32-channel Optically Isolated from field (5KV), 24V / 48V / 110V / 220V DC signal inputs, 3U size hot pluggable EURO card for easy expansion.
  • External surge suppressor and scaling card to arrest surges at the input stage itself.
  • Analog Inputs: Multiples of 8/16-channel single ended /differential inputs, 0 - 20mA / 4 - 20mA current signals, 0 5V single ended voltage inputs, -10V - +10V differential input voltages.
  • Digital Output: Multiples of 8/16-channel relay drive card,inbuilt 24V / 48VDC contactors.
  • Protocol support: IEC 60870 5 101 /102 / 103 / 104, IEC 61850, MODBUS RTU, SPORT and DNP3.
  • Operating Temperature: -5° to +55°C and Humidity up to 95% RH non- condensing at 40°C.
  • GPS time synchronization (optional) and standard in-built auto diagnostics.
  • Hot redundant (optional) power supply, AC input 230V +/- 10%, DC input 48V +/- 10% or 250V DC +/- 10%, with input EMI / RFI suppression by line filter and input surge protection.
  • Local and remote configuration and monitoring, local HMI.
  • Communication media support Modem (Dial up / Leased line / RF), GSM / GPRS, CDMA, 3G, PLCC, Fiber optic / VSAT and LAN.
  • Redundancy options for CPU, Power Supply and Communication.
  • RTU is configurable using web based configuration and maintenance tool.

Rugged Design

  • Designed to work in the harsh industrial environment
  • High noise immunity
  • Low power consumption
  • Industrial grade motherboard

Cost Effective

  • Embedded real-time Linux
  • Local and Remote Configuration
  • Highly scalable to address the present and
  • future needs
  • Local HMI
  • Redundancy
  • Processor Level
  • Power Supply
  • Ports
  • Local Solid State Memory


  • Modem PLCC
  • LAN
  • RS 232/485


  • IEC
  • DNP3

Scalable and Modular

  • Hot pluggable 3U Analog and Digital I / O cards