Käyttöopas Siemens Autojen Elektroniikka 3Ra62 [4/58 Sivut]

Siemens autojen elektroniikka 3RA62

Combination Starters & Starters for Group Installation

SIRIUS 3RA2 Motor Starters

General data

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SIRIUS Innovations Supplement 2011

Communications integration using IO-Link

Motor starters can also be assembled with IO-Link for connec-

tion to the higher-level control system. For each starter this

requires a communication-capable contactor onto which a

3RA27 11 function module is plugged (various versions for

direct-on-line, reversing and wye-delta starts). The design of the

SIRIUS motor starters permits a group of up to 4 SIRIUS controls

to be conveniently connected through a standardized IO-Link to

a control system, reducing wiring time considerably compared

to the conventional parallel wiring method. The electrical con-

nection is made using only a single cable with three conductors.

The function modules perform not only the communication (con-

tactor operation and feedback, ready signal) but also the elec-

trical interlocking (for reversing and wye-delta starters) and the

timing relay function (wye-delta reversing time).

Communication information and control supply voltages are

passed on through ribbon cables so that the complete control

current wiring on the starter is no longer needed.

The monitoring and maintenance of a plant is made consider-

ably easier by transmitting diverse diagnostics data from the

function modules (e. g. missing main and auxiliary voltage, local

disconnection…) through IO-Link to the higher-level control sys-

tem. Also, starters equipped for IO-Link can be conveniently

controlled from the control cabinet door using the optional oper-

ator panel.

More information:

• For IO-Link see Chapter 2 "Industrial Communication"

• For 3RA27 function modules see Chapter 3 "Controls –

Contactors and Contactor Assemblies" --> "Function

Modules".

Communications integration through AS-Interface

Connection of the motor starters to the higher-level control sys-

tem is possible not only through IO-Link but also through

AS-Interface. The AS-Interface connection is recommended

wherever motor starters are used in distributed applications.

This solution also requires a communication-capable contactor

and a corresponding 3RA27 12 function module (various ver-

sions for direct-on-line, reversing and wye-delta starts). The

devices are implemented in A/B technology, making it easy to

connect up to 62 starters to an AS-i master (regardless of

whether they are direct-on-line, reversing or wye-delta starters).

This results in a significant reduction of wiring compared to the

conventional parallel wiring method. The electrical connection is

made using standard cables.

The function modules perform not only the communication (con-

tactor operation and feedback, ready signal) but also the elec-

trical interlocking (for reversing and wye-delta starters) and the

timing relay function (wye-delta reversing time).

Communication information and control supply voltages are

passed on through ribbon cables so that the complete control

current wiring on the starter is no longer needed.

More information:

• For AS-Interface see Chapter 2 "Industrial Communication"

• For 3RA27 function modules see Chapter 3 "Controls –

Contactors and Contactor Assemblies" --> "Function

Modules".

Contactors with communication interface

For assembling motor starters with communications integration

(AS-i/IO-Link) you need contactors with a communications inter-

face. These contactors are not included as standard in the

preassembled 3RA2 motor starters. A motor starter with com-

munications interface must be assembled by the customer from

individual devices.

Complete integration in the automation landscape

As the result of the communication connection through IO-Link

or AS-i, the SIRIUS motor starters are fully integrated in the auto-

mation landscape and can draw on all the advantages of TIA

(e. g. integration in the TIA Maintenance Station).

Mounting

3RA2 fuseless motor starters are available:

• For mounting onto standard mounting rails TH 35 according

to EN 60715 (depth 15 mm)

• For mounting onto busbar adapters (busbar center-to-center

clearance 60 mm, bar thickness 5 to 10 mm)

The fuseless motor starters are also suitable for screw fixing us-

ing two 3RV29 28-0B push-in lugs.

The 3RA2 fuseless motor starters can also be configured with

the 3RV29 infeed system

(see Chapter 5 "Protection Equipment"

--> "SIRIUS 3RV2 Motor Starter Protectors up to 40 A"

■

Benefits

The 3RA2 fuseless motor starters offer a number of advantages:

• Minimum planning and assembly work and far less wiring with

the preassembled complete units (only one order number

3RA2)

• Plug-in connectors from the motor starter protector to all types

of SIRIUS controls, for quicker and error-free assembly of

starters with screw and spring-type connection

• High planning reliability through consistent combination tests

for fuseless (400 V according to IEC) and fused configuration

(400 V, 500 V and 690 V according to IEC)

• Comprehensive approvals for use world-wide

(please ask for details of availability)

• Uniform accessories for the two sizes S00 and S0

• Spring-type connection possible throughout: Enhanced

operational reliability (vibration-resistant wiring) and less

wiring work thanks to plug-in connections

• Power loss 5 to 10 % smaller than for legacy 3RA1 devices,

hence lower power consumption

• Connection of starters to the control system through standard-

ized system connection (IO-Link and AS-i), for fast integration

in TIA and less wiring work. Requires communication contac-

tor versions which are not offered in pre-assembled 3RA2

starters.

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