AMF3.4 is a full Automatic Mains Failure unit intended to be used for Mains and Gen-Set control, where high process power is required. The controller can be used with single or three phase mains and generator systems

3 phase mains and 3 phase generator voltages are measured in true RMS and also 3 phase generator load current is measured. Phase sequence and Reverse Power Protection is provided for the Generator. User can program any of the auxiliary i/o ports for custom applications. The menu offers extensive control for each i/o and all the parameters can be configured via PC, using the ENKO PRO-Link configuration program. All the parameters can also be configured from the front panel controls. SMS messages can be sent, using optional GSM interface module. The unit can be programmed from remote distance.

Many of the control variables can be displayed as required on the front panel. There are 3 analog sensor inputs available and characteristics can be adjusted from the menu to fit any type of sensor. There are altogether 13 i/o ports available, among which many can be configured by the user. Load power is also measured and can be used with dedicated functions in the menu. Decisions can be made depending on active and/or reactive power of the load. Total accumulated active/reactive power is also measured and recorded.

The real-time clock allows weekly and/or monthly generator control programs to be made, which can manage periodic test run and /or disabling the generator at certain hours or on specific days. Magnetic pick-up input is available for reliable and accurate measurement and control of engine speed.


  • PC Interface for monitoring and system programming, SCADA control.
  • Real-time clock and time stamped alarm logging.
  • Phase sequence detection and reverse power protection.
  • Measurement of KW, KVA, KVAr, KWh and Power Factor
  • Magnetic Pick-up input for RPM measurement
  • Independent control of MCB and GCB from front panel
  • Phase sequence and reverse power protection for the Generator
  • Full digital calibration of all analog measuring inputs
  • Dedicated open and close buttons for MCB and GCB control
  • SMS message option for alarms
  • Event loging for the last 30 and alarm logging for the last 15 incidents
  • 3 phase Mains voltage and 3 phase Generator voltage and current measurement

Key Benefits

  • Automatic or Manual transfer of the Load between the Mains and the Generator
  • Easily receive information regarding the status of the Generator and view/edit parameters by sending and receiving SMS messages over a mobile phone
  • Option to configure paramters using the front panel or via ENKO Pro-Link SCADA software
  • Dedicated functions for specific applications like Telecom
  • Program weekly work schedules to test or simply run the Generator
  • Internal relay outputs eliminate the need for external relay use
  • The time and date stamped alarm and event logs allow easier and faster troubleshooting and maintenance
  • Three user levels unsures the safety of the systemli
  • Graphical user interface allows simple and user-friendly operation
  • Total of 18 I/O ports are provided which 13 of them are user configurable