WEG Electric SSW05 Serial Communications Instruction Manual

MANUAL OF THE

SERIAL

COMMUNICATION

SSW-05

Series SSW-05

SERIAL INTERFACE

CODE 0899.4895 E/4

Series: SSW

-

05

0899.4895 E/4

email: [e-mail]

MANUAL OF THE

SERIAL

COMUNICATION

SSW-05

Software: Version 2.1X

ATTENTION!

It is very important to
check if the software
version is the same as
indicated above.

WEG AUTOMAÇÃO

Av. Pref. Valdemar Grubba, 3000

89256-900 Jaraguá do Sul, SC – Brasil

Tel.[phone] – Fax[phone]

_______ Summary _______

1 1 2

3

7 7 7 8 8 8 8 9 9

10 10 11 13 13 14 15 16 16 17 17

18

SAFETY
NOTICES

1

1.1 Safety Notices in the Manual.......................................

1.2 Safety Notices on the Product ....................................

1.3 Preliminary Recommendations....................................

INTRODUCTION

2
COMMUNICATION
INTERFACES

3
DEFINITIONS

4
TELEGRAM
EXAMPLES

5

2.1 About this Manual........................................................

2.2 About WEG Protocol....................................................

3.1 RS-485 Interface..........................................................

3.2 RS-232 Interface.........................................................

3.2.1 RS-232 Electrical Characteristics........................

3.2.2 Cares with RS-232..............................................

3.2.3 RS-232 Connections...........................................

3.2.4 Description of the Soft-Starter Serial Connector.

3.2.5 Definition of the RS-232 Cable............................

3.2.6 Description of the Master Connector (RJ)...........

3.2.7 Definition of the RS-232 PC Cable......................

3.2.8 Description of the PC (DB9) Connector...............

4.1 Used Terms.................................................................

4.2 Block Diagram..............................................................

4.3 Variable Standardization..............................................

4.4 Character Format.........................................................

4.5 Protocol........................................................................

4.5.1 Reading Telegram...............................................

4.5.2 Writing Telegram.................................................

4.6 Execution and Test Telegram......................................

4.7 Telegram Sequence ....................................................

4.8 Variable Code..............................................................

4.9 Times...........................................................................

5.1 Example 1....................................................................

5.2 Example 2....................................................................

3

5

18

19 20 22

23 23

24 24 24 24 24 24

24 25 25 26 26 27 30 30 30 32 32 33 33 33

34

34

VARIABLES OF THE
SERIAL
COMMUNICATION

6
ERRORS AND SERIAL
COMMUNICATION
PARAMETERS

7
DETAILED
PARAMETER
DESCRIPTION

8

TROUBLESHOOTING
9

6.1.1 V00 Indication of the Equipment Model...................

6.1.2 V01 Indication of the Soft-Starter Status...................

6.1.3 V02 Indication of the Soft-Starter Errors...................

6.1.4 V03 Logic Command Selection.................................

7.1 Parameters related to the Serial Communication .......

7.2 Errors Related to the Serial Communication ...............

8.1 P000 – Access Parameter...........................................

8.2 P002 – Motor Current Indication (%)...........................

8.3 P003 – Motor Current Indication (A)...........................

8.4 P023 – Software Version.............................................

8.5 P030 – R Phase Current..............................................

8.6 P030 – S Phase Current..............................................

8.7 P030 – T Phase Current..............................................

8.8 P050 – Status Indication of the Motor Thermal

Protection .......................................................

8.9 P101 – Initial Voltage (% Un).......................................

8.10 P102 – Time of Acceleration Ramp (s)......................

8.11 P104 – Time of Deceleration Ramp (s)......................

8.12 P105 – Motor Current Setting (%).............................

8.13 P106 – Protection Configuration...............................

8.14 P204 – Load Factory Setting.....................................

8.15 P206 – Auto-Reset Time............................................

8.16 P215 – Keypad Copy Function..................................

8.17 P220 – HMI / (Trimpots and Dip Switch) Selection....

8.18 P264 – Programmable Digital Input DI 1...................

8.19 P277 – Programmable Relay Output (14/23 – 24)....

8.20 P295 – Rated Current of the Soft-Starter..................

8.21 P308 – Network Address...........................................

8.22 P313 – Action of the Serial Communication

Verification.........................................................................

8.23 P314 – Verification Time of the Serial

Communication..................................................................

Problem and Corrective Action.......................................... 35

19

24

1

SAFETY NOTICES 1

This Manual contains all necessary information for the correct use of the Serial

This Manual has been written for qualified personnel with suitable training or technical
qualification to operate serial interfaces and their respective communication protoco ls.

1.1 SAFETY
NOTICES

IN THE MANUAL

1.2 SAFETY

NOTICES ON THE
PRODUCT

Communication of the SSW -05 Soft-Starter.

The following Safety Notices will be used in this Manual:

DANGER!

If the Safety Instructions are not strictly observed, it can lead
to serious of fatal injuries of personnel and/or equipment
damage.

ATTENTION!

Failure to observe the recommended Safety Procedures can
lead to material damage.

NOTE!

The text aims at to provide important information for the
correct understanding and proper product performance.

The following symbols may be attached to the product,
serving as Safety Notice:

High Voltages.

Components sensitive to electrostatic discharge.
Do not touch them

Mandatory connection to ground protection (PE).

Shield connection to ground.

1 SAFETY NOTICES

2

1.3 PRELIMINARY
RECOMMENDATIONS

DANGER!

Only qualified personnel should plan or implement the
installation, startup, operation and maintenance of serial
interfaces.

Read this manual before attempt any installation and
operation of the Soft-Starter by following ca refully all safety
notices here indicated.

Please follow the safety instructions indicated in this Manual,
in the Soft-Starter Manual and/or defined by local
regulations.

If personnel injuries or equipment damages can occurs due
to motors driven by motor starters, please provide always the
required electromechanical safety devices.

If remote control (via serial interface) is used, please take all
required precautions to avoid personnel injuries and
machine and installations damages.

Failure to comply with these instruction may result in
personnel injury and/or equipment damage.

DANGER!

Always disconnect the equipment from the power supply
before open it.

ATTENTION!

The electronic boards are fitted with components sensitive to
electrostatic discharges. Never touch any electrical
component or connector directly. If necessary to do so, touch
before the properly grounded metallic frame or use a suitable
ground strap.

NOTE!

In general, communication networks are sensitive to
interference generated by other equipment. In this case,
please follow all recommended instructions.

3

INTRODUCTION 2

2.1 ABOUT THIS

MANUAL

This Manual describes how to install, start-up, operate and
identify problems related do the serial interface of WEG Soft ­Starters.

For more information, training or services, please contact:

WEG Service:

WEG AUTOMAÇÃO

Tel. [phone]

Fax: [phone]

NOTE!

If you need information or services, please make available
following data:

þ model of WEG product;
þ serial number and manufacturing date as indicated on

WEG product nameplate;

þ version of installed software.

2.2 ABOUT WEG

PROTOCOL

The main purpose of the serial network communication is
the physical connection of several equipment to one or more
masters connected to this network through only one or two
pair of wires:

Master

MESTRE

PC, CLP, etc.

Slave 1

ESCRAVO 1

(inverter)

(conversor)

Slave 2

ESCRAVO 2

(inverter)

(conversor)

. . .

Slave n

ESCRAVO n

(inverter)

(conversor)

n <= 30

WEG Soft-Starters are fitted with control software for the
transmission/reception of data through the serial interface to
enable the data reception sent by the master and the data
sending requested by the same.

2 INTRODUCTION

4

The transfer rate is 9.600Bps, following an exchange
protocol, type question/answer, meeting ISO 1745 standard
for the data transmission in code.

The master is able to realize the following operations related
to each WEG equipment connected to the network:

þ Identification:

• Network number;

• Soft-Starter type (model);

• Software version.

þ Commands:

• general enabling/disabling;

• error reset.

þ Status Recognition:

• enabling/disabling;

• in acceleration;

• at rated voltage;

• in deceleration;

• in error.

þ Parameter Reading or Changing.

Typical examples of WEG network use:

• Supervisory monitoring at the same time several variables
of WEG Soft-Starters;

• PLC controlling the operation of several WEG Soft­Starters WEG in an industrial process.

NOTE!

WEG protocol is the same for all WEG equipment, but the
logic command words, the basic variables and the
parameters can differ among equipment.

5

RS-485

COMMUNICATION INTERFACES 3

3.1 RS-485 INTERFACE

The physical connection between WEG Soft-Starters is
performed according to one of the standards below:

þ RS-232 point to point, up to 10m (32.8 ft);
þ RS-485 multipoint, with the use of the MIW-02 serial

interface module, with galvanic insulation, up to 1000m
(3280 ft).

For the serial communication of the Soft-Starters at WEG
network.

WEG Network

þ The interface allows the interconnection of up to 30 WEG

Soft-Starters to one master, attributing to each WEG
equipment one address (1 to 30) that has to be set.

þ In addition to these 30 addresses, two additional

addresses are at disposal to perform special tasks:

• Address 0: all WEG Soft-Starters are inquired,
independently of its address. On order to prevent short­circuits in the interface lines, only one Soft-Starter can be
connected to the network (point-to-point).

• Address 31: a command can be transmitted to all Soft­Starters on the network simultaneously, without
acceptance recognition.

3 COMMUNICATION INTERFACES

6

þ List of addresses and corresponding ASCII characters:

Address ASCII Address ASCII

0 @ 16 P
1 A 17 Q
2 B 18 R
3 C 19 S
4 D 20 T
5 E 21 U
6 F 22 V
7 G 23 W
8 H 24 X

9 I 25 Y
10 J 26 Z
11 K 27 [
12 L 28 \
13 M 29 ]
14 N 30 ^
15 O 31 _

þ The connection between the network participants is

realized through a pair of wire.

þ The signal levels are according to EIA STANDARD RS -

485 with differential receivers and transmitters.

NOTE!

WEG SSW-05 Soft-Starter is only fitted with the RS-232
serial interface, thus requiring the use of a MIW-02 serial
interface module, when a RS-485 serial interface is applied.

Module Item WEG

MIW-02 417100543

NOTE!

If master is fitted with only one RS-232 standard serial
interface, you have to apply the serial MIW-02 interface
module, RS-232/RS-485, if fitted with RTS signal, Request
To Send. If the Master is not fitted with the RTS signal, you
must apply a module that is able to generate the RTS signal.

For more details, contact WEG.

7

COMMUNICATION INTERFACES 3

3.2 RS-232 INTERFACE

For the point-to-point communication with WEG Soft-Starters.

þ In this case we have the connection of a Master to a Soft-

Starter WEG.

þ The logical levels meet EIA STANDARD RS-232C that

determines the use of balanced signals.

þ Use a connection cable for the RS-232 interface.

3.2.1 RS-232 Electrical
Characteristics

þ RS-232:

• Standard: EIA Standard RS-232C.

• Transmission speed: 9.600Bps.

• Max. Cable length: 10 m (32.8 ft).

þ Receiver:

Max. Input voltage: ± 25V;
Input resistance: > 3KΩ
Level 1 (MARK): < -3V;
Level 0 (SPACE): > +3V.

þ Transmitter:

Current limitation: ~ 10mA;
Output voltage at level 1: < -7V (RL = 3K);
Output voltage at level 0: > +7V (RL = 3K).

3.2.2 Cares with
RS-232

þ Ensure that the interface is not isolated against the

internal electronics of the equipment to which is
connected.

þ Thus you must plan carefully the wiring location by

separating it at least 10 cm (0.33 ft) from the power
wiring.

þ It is also recommended to install the master as near as

possible to RS-232 serial interface of WEG Soft-Starter.