The Safety Handbook ABB Jokab - Automation Systems and Controls

Pluto safety PLC – an overviewPluto with a safety busProfibus DPDeviceNetCANopenProfinetEthernet/IPModbus TCPPluto B2020 I/OSafe bus for connection of up to 32 Pluto unitsPatendedsolutionHMIGateway for two-way databuscommunication between Pluto andother control systems.4 independentfailsafe safety outputsPluto is an All-Master-System for dynamic and static safetycircuits where the inputs and other information are sharedon a databus. Several safety sensors can be connected toone input while still achieving the highest level of safety.Pluto has inputs for all safety devices on the market, andthe Pluto Manager software selects how each input shallrespond.HMI, An HMI operatorpanel can communicatewith Pluto in both directions.Connection can bemade via the bus or directto the front of the Pluto.The interface is RS232and the protocol isModbus ASCII 8 bit.Pluto bridgeWith a Gateway set upas a Pluto bridge, it ispossible to:• increase the databuslength• use different databusspeeds for each section• filter information fromone section to reducethe databus loading onother sections.Pluto without a safety bus – Singel-PlutoA single Pluto can be used as a fully programmable safety logic controller.Pluto S20Pluto S46Connector expansionPatendedsolutionPatendedsolutionSeveral expansion relays canbe connected to a single Plutosafety output while retainingthe safety level.Pluto without a bus connection is available in two sizes, with 20 and 46 I/O , the S20 and S46 respectively. In otherwords, they are similar to the equivalent versions with bus connections, the B20 and B46.2:4ABB