Overview
The FX3S 20MR ES is a Mitsubishi plc expansion modules. The FX3S-20MR/ES is a Mitsubishi FX3S series PLC base unit with 12 integrated inputs and 8 relay outputs, running on a 100-240 VAC supply at 20 W. It carries 138 timers and 88 counters for small-machine sequencing. Certified UL, cUL, and CE (EMC), it fits into panels requiring agency-approved controllers for export or regulated environments.
Selection and sizing
With 138 timers and 88 counters, the FX3S-20MR/ES provides enough program elements for a standalone machine cell or a small conveyor line. The 8 relay outputs handle AC loads up to the contact rating; for higher current or inductive loads, an external contactor is recommended.