PLUTO B20 2TLA020070R0600 | ABB Safety controller

Pluto is an “All-Supervisor” Safety PLC concept that simplifies thedesign of safety systems and achieves the highest safety (Category 4) according to EN 954-1/EN ISO 13849-1 and SIL 3 according to IEC/EN 61508.The key difference between Pluto and conventional Safety PLCs is that there is no “supervisor-subordinate” relationship between the control units connected to the Safe Bus. All Plutos are “supervisor” units and can see each others’ inputs and outputs. Using this concept, each Pluto can make decisions about its own immediate safety environment.This concept enables simple communication and easy alterations of the safety system. With the use of a “Gateway” device, information from a Pluto network can be transferred to other bus systems thereby creating even larger systems. Gateway units are readily available for a number of different bus-systems—i.e. Profibus DP, DeviceNet, CANopen, Profinet, Ethernet/ IP and Modbus TCP. Pluto offers an economic solution for both a single machine and for large integrated machine systems. Of Pluto B20’s I/O, 8 are dedicated as safety inputs, 8 can be configured as both safety inputs or outputs (sometimes even as inputs and outputs at the same time) and 4 are failsafe outputs independent of each other. 32 Plutos can be connected to a twisted pair safe bus system. This enables the amount of physical I/O connections to be expanded from 20 to 150 for the B20 family and 46 to 390 for the B46 family.