The industry is littered with ancient HMI and PLC units that are waiting to be replaced at a large expense, or causing the machine to be down while the application is completely reworked. 
This was the case for an OEM customer who has been using a counting module for decades to store up to 25 different preset recipes for SLOW and STOP digital commands to a Variable-Frequency Drive.
The 7” Unitronics Samba easily exceeded all of the obsolete counter’s functionality:
- The onboard high-speed digital inputs multiplied the maximum speed.
- The preset recipe storage capacity was multiplied by a hundred (to 2500).
- The beautiful HMI screens include buttons that light-up to prompt correct operator interaction breathing new life into what used to be a dull 16-character text display.
- The multiple inputs and outputs rest unused on the Samba unit, awaiting any application advances that the engineers might think of with the newfound full PLC functionality.
- And, for the kicker, RSA’s price is half the amount of the original counter.
With incredible product diversity and agressive low costs, Unitronics and RSA prove time and time again to be the right solution for replacing obsolete HMIs and/or PLCs.
