ABB Jokab Pluto Safety PLC

Product positioning and core architecture

Pluto Safety PLC is a modular safety programmable controller launched by ABB, which adopts the original All Supervisor full control architecture:

All units on the bus are mutually master controlled, without any distinction between master and slave

Can directly read all network I/O and locally control output

System response time * * ≤ 55ms**

A single secure bus can connect up to 32 devices at most

Security certification

EN ISO 13849‑1：PL e / Category 4

IEC 61508：SIL 3

EN 62061：SIL 3

EN 954‑1：Cat.4

Model and I/O specifications

1. Independent type (without safety bus)

Model Total I/O Safety Input Reuse IQ Safety Output Analog Quantity

Pluto S20 20 8 8 4 (2 relays+2 transistors) 1

Pluto S46 46 24 16 6 (4 relays+2 transistors) 3

2. Bus type (with Pluto Bus)

Model Total I/O Safety Input Reuse IQ Safety Output Bus Features

A20 20 8 8 4 has current monitoring

B20 20 8 8 4 has a universal type

B46 46 24 16 6 has large I/O

Input technology (core advantage)

Dynamic signal (A/B/C pulse)

Up to 10 sensors can be connected in series with a single input

Approximately 200 detections per second

Can detect short circuits, wire breaks, and cross faults

Static signal

Used for mechanical switches

Dual channel implementation of PL e

IQ Reusable Terminal

Can be set as safe input/non safe output/simultaneous input/output

Typical for resetting buttons with lights

Output specifications

Relay output: 250VAC/1.5A, AC-15, DC-13

Transistor output: -24VDC/800mA

All safety outputs are independently programmable and diagnostic

Can be externally connected to BT51 expansion relay for capacity expansion

Pluto Bus safety bus

Type: Security protocol based on CAN

Speed: 100~1000kbps automatic detection

Length: Maximum 600m (low speed), 150m (400kbps)

Node: Up to 32 units

Synchronization: Global memory sharing, real-time data interoperability

Gateway products (GATE series)

Model docking bus features

GATE-P2 Profibus DP bidirectional data, DIP addressing

GATE-D2 DeviceNet can be used as a CAN bridge to extend the bus

GATE-C2 CANopen supports PDO/SDO

GATE-E2 EtherNet/IP, Profinet, Modbus TCP with Web configuration

Security Encoder RSA 698

Type: Multi cycle absolute value

Resolution: 25 bits (13 turns+12 bits)

Up to 16 units on a single bus

Used for safe position, safe speed, electronic cam

Pluto Manager software

Free, Windows platform

Programming: ladder diagram

Built in T Ü V certification function block

Dual channel monitoring, dual hand control, shielding, reset, encoder

Support:

I/O configuration

Variable Naming

project management

Bus diagnosis

The program can be copied offline through IDFIX-PROG

Typical applications

Robot unit safety zoning control

Machine safety door, emergency stop, light curtain

Pipeline safety interlock

Multi device distributed security linkage

Key questions and answers

Question 1: What is Pluto’s dynamic input technology? What are the advantages compared to traditional secure inputs?

answer:

Dynamic input is Pluto’s unique pulse detection mechanism, which outputs three types of square wave pulses, A/B/C, and returns convergence judgment after passing through sensors.

Advantage:

Single input can achieve PL e/Cat.4, saving wiring and ports

Single port can connect up to 10 Eden/safety switches in series

Real time detection of short circuits, wire breaks, and cross faults

Stronger anti-interference and faster response

Question 2: What is the difference between the All Supervisor architecture and the traditional safety PLC bus? What value does it bring to the system?

answer:

difference

Traditional: 1 master multiple slaves, slave stations rely on the master station

Pluto: All units are master controllers, visible to each other for network I/O

value

No single point of failure, higher safety

Local output and control, faster response

Flexible expansion, no need to reconstruct the main station for adding or deleting devices

Simplified system design and easier debugging

Question 3: What are the three uses of Pluto’s IQ multiplexing terminal? What scenarios is it mainly used for?

answer:

Three uses:

Safe input: emergency stop, safety door, light curtain

Non safety output: connected to indicator lights and status signals

Simultaneous input+output: The same terminal serves as both an input and an output

Typical scenario:

Reset button with light – the button signal is used as input, and the light is driven by the output, greatly saving I/O points.