ABB JOKAB SAFETY Pluto series safety PLC

Pluto A20 v2 8 8 2 2 2 optional current monitoring

Pluto B20 v2 8 8 2 2 2 standard configuration-

Pluto B22 14 8- Standard-

Pluto D20 8 8 2 2 comes standard with 4 analog inputs

Pluto S20 v2 8 2 2 2- Independent Unit

Pluto B46 v2 24 16 4 2 standard-

Pluto D45 24 15 4 2 comes standard with 8 analog/4 counting channels

Pluto S46 v2 24 16 4 2- Independent Unit

Pluto AS-i v2 4 4 2 2 2 comes standard with AS-i bus

Pluto B42 AS-i 20 16 4 2 comes standard with AS-i bus

3.2 Detailed Explanation of Featured Models

Pluto A20 v2: Equipped with unique current monitoring function, it can monitor the current of IQ16 and IQ17 ports (0-1.0A ± 10%). This feature is particularly suitable for ensuring the proper functioning of the muting lamp. It should be noted that the current monitoring function does not have independent redundancy, so if used for safety functions, it must be used dynamically, that is, to read and evaluate the current separately when outputting enable and disable.

Pluto D20 and D45: Added analog input function, suitable for situations where monitoring of analog safety signals is required. D20 is equipped with 4 safety analog inputs, D45 is equipped with 8 safety analog inputs, which can be configured as:

Normal secure input

0-10V analog input

4-20mA analog input

To achieve SIL 3/PL e safety level, two sensors need to be connected in parallel, each with an input channel.

Pluto D45 counting input: The four inputs IA0-IA3 of D45 can be configured as high-speed counting inputs, with a maximum frequency of 14000 Hz, supporting two counting modes:

Up counting: suitable for speed monitoring, can be connected to inductive sensors, photoelectric sensors, or incremental encoders

Up/Down Counting: The sensor needs to generate A/B pulses with a phase difference of 90 °, which can simultaneously monitor speed and direction

3.3 Unique Design of IQ Port

Pluto's IQ (input/output) port is a highly innovative feature, with one terminal configurable to:

Safe input: Same as I port function

Non safety output: used to control non safety functions such as indicator lights and status signals

Simultaneously serving as both input and output: for example, the reset button (input) with indicator light (output) can be implemented with just one terminal, greatly saving I/O points

4. Pluto Security Bus: A High Performance Distributed Security Network

4.1 Bus characteristics

The Pluto security bus is based on the CAN physical layer and uses proprietary security protocols, with the following characteristics:

Number of nodes: up to 32 Pluto units

Bus speed: 100, 125, 200, 250, 400, 500, 800, 1000 kb/s optional

Transmission distance: up to 600 meters at minimum speed and 150 meters at 400 kb/s speed

Electrical isolation: The bus interface is electrically isolated from the internal circuit to improve anti-interference capability

4.2 Bus Expansion and Bridge

Through Gateway devices (GATE-D2 or GATE-C2), it is possible to achieve:

Bus length extension: Divide the secure bus into multiple network segments, breaking through the length limit of a single cable segment

Different speed network segments: Different network segments can use different communication speeds to optimize performance

Information filtering: Filter unnecessary information, reduce network segment load, and allow longer cables

4.3 Integration with other buses

Pluto can seamlessly integrate into various industrial network environments through Gateway series devices

GATE-P2: PROFIBUS DP Gateway

GATE-D2: DeviceNet Gateway

GATE-C2: CANopen gateway

GATE-E2: Ethernet gateway, supporting PROFINET, EtherNet/IP, Modbus TCP

The Gateway device adopts a compact 22.5mm width design and can be installed on DIN rails. It can be configured through DIP switches and can be put into use without programming tools.

5. Pluto Manager: An intuitive secure programming tool

5.1 Software Overview

Pluto Manager is a programming software designed specifically for Pluto safety PLC, which is provided free of charge with the product and can be downloaded from the ABB website. The software uses ladder diagram programming language, combined with T Ü V certified functional blocks, greatly simplifying the development of safety functions.

5.2 Systematic workflow

Pluto Manager provides a clear three-step project development process:

Step 1: I/O Configuration

Define each Pluto unit

Configure the signal type of the input port (dynamic/static)

Purpose of configuring IQ port (input/output/bidirectional)

Step 2: Variable Naming

Define meaningful names for input (I), output (Q), hold memory (M), global auxiliary memory (GM), and registers (R)

Using names instead of actual addresses in PLC programs to improve readability and maintainability

Step 3: Ladder diagram programming

Building secure logic using named variables

Rich instruction set including timers, arithmetic operations, sequence control, etc

Download the project to Pluto via programming cable

The program is automatically distributed to all Pluto units in the project through the bus

5.3 Pre defined Function Block Library

Pluto Manager includes multiple T Ü V certified functional blocks, covering common safety applications:

Two channel safety input function (with startup, reset, and test inputs)