Yokogawa ALR121-S53 S1 Serial Communication Module Precision Control Module Transportation: Used in rail and

Transportation: Used in rail and marine DC distribution systems to ensure reliable and secure operation of onboard systems

Power generation plants integrating PLC modules for supervisory control

and mechanical drives

reducing downtime and maintenance costs in demanding industries

Manufacturer: ABB (Asea)

Yokogawa ALR121-S53 S1 Serial Communication Module Precision Control Module Transportation: Used in rail andProduct Description The ALR121 S53 S1 is a high performance serial communication interface module designed for Yokogawa CENTUM VP and Yokogawa CENTUM CS 3000 Field Control Stations (FCS). It provides a reliable communication link between the controller and external subsystems such as FA M3 PLCs, power meters, motor protection relays, and other intelligent field devices. The module supports both RS 422 and RS 485 physical layers (software selectable),