AMI Automation successfully commissioned a DigiFCR X4 at SSAB Iowa's DC EAF Rectifier in October. The DigiFCR X£ uses state of the art technology to upgrade controls and firing circuitry of large power rectifiers, solving operational and obsolescence problems without making a big investment and longer shutdowns. The full suite of AMI solutions to control Power Systems, DC EAF Rectifier, SmartFurnace & SVC, will allow SSAB Iowa to have better arc stability, power consumption, increase their panels' life, respond faster and smarter to each heat stage, while monitoring the entire furnace operation among many other process improvements. DigiFCR X£ is more than a current regulator and has been designed by AMI to control any brand of DC EAF Rectifiers with advanced controls, high speed response, expanded diagnostics tools beyond conventional capabilities and remote monitoring. The upgraded power rectifier's circuitry was then interfaced with AM Is electrode regulator, taking advantage of DigiFCR X£ native coordination with DigitARC PX3. In an upcoming stage, AMI will also upgrade the controls and firing boards of SSAB Iowa's existing Static VAR Compensator using a DigiFCR SVC with same technological platform than DigiFCR X£.