Toshiba RS-485 User Manual 2

IS7FB001

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RS-485 Option Unit for TOSVERT VF-S7

Operation Manual

Table of Contents

1.

Overview⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

2.

Communications specifications⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

3.

Names and functions of main parts⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

4.

Connection and start-up⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

5.

Dimensions⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

6.

Communication parameters⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

7.

Specifications⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

8.

Warranty⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅

This option is available only for VF-S7 series adjustable speed drives
(ASDs) whose CPU is V103 or higher. Communication does not work
with versions V100~V102. Be sure that your ASD contains at least V103
CPU software.

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© TOSHIBA INTERNATIONAL CORPORATION MAY.1998

All Rights Reserved

1

Introduction

Thank you for purchasing the “RS-485 Option Unit” for Toshiba’s TOSVERT VF-S7 series ASD.
Read the safety precautions in the VF-S7 Instruction Manual before powering up your VF-S7 unit.
The S7 series has a built-in serial communication port. Using this RS-485 Option Unit, the ASD and a
peripheral device such as a computer or PLC can communicate with each other.
Please read the entire manual carefully before attempting to control your VF-S7 via RS-485 serial
connection. Besides this operation manual, the “Serial Communications Option Manual” is needed to
develop software which communicates with the VF-S7.

[Explanation of part number of RS-485 Option Unit]

RS4001Z-0

Revision number

Cable length Z: Without cable

(Cable length between ASD and Option Unit)

Model number of RS-485 Option Unit

Symbol of RS-485

[Check of accessories]
The RS-485 Option Unit is shipped together with the following accessories in the same package.
On opening the packing case, check to see if the following accessories are contained or not.
(1) Operation manual of RS-485 Option Unit……1 copy

(2) Connector terminal (remover side)……1 pcs

(MVSTBW2.5/6-ST-5.08 : Phoenix Contact)

(Note) The RS-485 Option Unit (Part Number : RS4001) is

not provided with connection cable between the VF­S7 ASD and Option Unit. This should be purchased
separately.

Part number of connection cable between
the VF-S7 ASD and Option Unit

CAB0011-0 1m (1.2m, 4ft)
CAB0013-0 3m (3.6m, 12ft)
CAB0015-0 5m (4.8m, 16ft)

Cable length

1

2

Carefully read the following notes

Safety precautions

There are warnings and cautions appearing on the ASD and in its operation manual. Carefully read
those warnings and cautions because they are very important not only for safe and correct operation but
also for preventing the equipment and operators from getting damaged or injured.
After reading the operation manual of the ASD carefully with understanding of every note for safety, read
this operation manual for carrying out connection and operation of the equipment correctly.

GENERAL PRECAUTIONS

DANGER!

Never disassemble, remodel or repair the product.

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Not following this instruction could cause electrocution, fire or injury. Repair

should only be performed by authorized service centers.
NEVER
DISASSEMBLE

Never put or insert any objects (cable scraps, rods, wires, etc.) into the ASD

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and the Option Unit.

Not following this instruction could cause electrocution or fire.
PROHIBITED

MANDATORY

Do not splash water or liquid onto the ASD or the Option Unit.

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Not following these instructions could cause electrocution or fire.

Whenever making wiring connections or setting the switch, be sure to turn all

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power to all related units off.

If the ASD or the Option unit produces smoke, odor or abnormal noises turn off

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the input power immediately. Using the ASD or the Option unit in such a

condition could result in a fire.

CAUTIONS ON TRANSPORTATION AND INSTALLATION

DANGER!

Do not operate the unit, when loose, broken, bent or otherwise damaged parts

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are found.

Not following this instruction could cause electrocution or fire. Repair should
PROHIBITED

MANDATORY

only be performed by authorized service centers.

Never install the unit in a place exposed to flammables, as this could cause a

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fire.

Never install the unit in a place where water or liquid is splashed onto it, as this

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could cause electrocution or fire.

Use the unit under the environmental conditions specified in the instruction

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manual, otherwise malfunctions or troubles could result.

CAUTION!

Avoid installation locations that may be subjected to large shocks or vibrations,

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otherwise the unit could fall and cause injury.

PROHIBITED

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CAUTION ON OPERATION

Do not wipe the unit with wet cloth.

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Not following this instruction could cause electrocution.

Do not pull the communication cable, otherwise malfunctions or troubles could
PROHIBITED

CAUTION ON DISPOSING OF OPTION UNIT

MANDATORY

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result.

Dispose of the used unit as industrial waste.

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Not following this instruction could cause injury.

Cautions on use

CAUTIONS

Avoid installation locations that may be subjected to rapid changes in ambient

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temperature or/and humidity.

Route the transmission cable separate from the ASD input/output power wiring.

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To avoid the possibly of electric shock due to leakage currents, always ground

the ASD unit’s E/GND terminal and the motor. To avoid misoperation, do not

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connect RS-485 Option Unit’s SHIELD terminal to either of above-mentioned

grounds or any other ground.

When disconnecting connection cable, make sure to hold its connector with

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care not to give unreasonable stress to the cable and the unit. Since connectors

of optional cables have locking pawls for disconnection prevention at the ASD

and the Option Unit, disconnect such a connector while pressing the pawl by

finger for unlocking.

Mount the Option Unit securely on the panel, otherwise it could fall and cause

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malfunction or breakdown.

Connect an electromagnetic contactor or the like between the ASD and the

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power source to secure external control of emergency stop of operation.

Do not assign the same ASD number to more than one ASD in the same

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system.

The ASD’s EEPROM has a life of 10,000 write cycles. Do not write to the same

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EEPROM address more than 10,000 times.

DANGER!

CAUTION!

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1. Overview

By using RS-485 Option Unit, a network can be constructed that allows communication between a host
computer and multiple ASD units. A maximum of 32 Option Units can be connected on the same
network. And two ASDs can be connected to one Option Unit. A maximum of 64 ASDs can be connected
on the same network. (If ASD has a CPU whose version is V104 or V103, a maximum of 32 ASDs can
be connected on the same network.)

2. Communication specifications

Item Specifications
Interface Conforming to EIA RS485 standard
Configuration 4-wire, bus type (terminating resistor is necessary at

each end of system)
Communication Distance 1,000m maximum
Connection Points 32 units maximum
Number of ASDs per one Option Unit 2 units maximum
Number of ASDs on the Same Network 64 units maximum (If ASD has a CPU whose version

is V104 or V103, a maximum of 32 ASDs can be

connected on the same network.)
Communication Line Isolation Not isolated
Synchronization Method Start-stop synchronization
Error Detection Method Parity, checksum
Communication Speed 1200/2400/4800/9600 baud selectable (parameter

and switch selection)
Data Code ASCII code, binary code
Other Time-out function available

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

3. Names and functions of main parts

Switch for communication speed
& Termination resistor setting
(Note) Set the switch before power on

(Back side of the UNIT)

OFF (OPEN)

ON

1234

(Front side of the UNIT)

(1) Communication speed setting (SW1, 2)

Setting
SW1 SW2

Baud

rate
OFF OFF 1200
ON OFF 2400
OFF ON 4800
ON ON 9600

Set the communication speed to the
same as ASD’s (F800).

(2) Terminating resistor setting (SW3, 4)

Receiving
terminal
RXA, RXB

SW

Transmitting
terminal
TXA, TXB

R R T T S S
X X X X G H
A B A B I
E
L
D

INVERTER 1

RS485
OPTION UNIT

INVERTER 2

Signal common
terminal
SG

Shield
terminal
SHIELD

Connector
terminal
(socket side)
Insert removal
terminal block

SW3-ON : Connecting receiving side
SW4-ON : Connecting transmitting side

Connect the terminating resistor to both
end of system.

Connector terminal (removal side)

7mm

Terminal pitch : 5.08mm

• Wire size (shielded twisted-pair cable recommended)
Bare wire (without stick lug) : 0.2~1.5mm
Phoenix Contact TWIN terminal : (wire size below) × 2
Part number: AI-TWIN2×0.5-8WH, AI-TWIN2×0.75-8GY, AI-TWIN2×1-8RD, AI­TWIN2×1.5-8BK

• Removable terminal block
COMBICON terminal blocks such as the Phoenix Contact TMSTBP series that allows
signal branching can be used in place of included terminal.

Communication connector: INVERTER 1, INVERTER 2

Connect with the communication connector CN1 of the
ASD with communication cable.

M3

Connector terminal
(removal side)
Insert socket
terminal block

2

5

6

(100Ω o

ess)

4. Connection and start-up

Connect the ASD with a host computer according to the procedure mentioned below.

Procedure

(1) Set the communication speed to SW on the RS-485 Option Unit.
(2) Connect terminating resistor in both ends of units. The RS-485 Option Unit has internal

terminating resistor. Set SW3 and SW4 to ON to connect these terminating resistors.
(3) Install the RS-485 Option Unit on a metal panel.
(4) Connect the cable to the removable terminal block. If the stick-lugs are not used, strip the

insulation from the wire and insert the wire directly into the terminal. Be sure not to short any

wires. Run the cable as shown in the figure. Use a common cable in the system.
(5) Connect the shield of the twisted pair cable to the SHIELD terminal on each RS-485 Option Unit,

and make the ground connection. Do not connect Host computer ground to a power ground or

any other noise-producing ground connection.
(6) Insert the removable terminal block back into the RS-485 Option Unit.
(7) Connect the communication connectors (INVERTER1 and INVERTER2) of the RS-485 Option

Unit to the communication connector (CN1) of the ASD with the optional cable.
(8) Turn on the power of ASD.
(9) Set the communication parameter of the ASD.

HOST
COMPUTER

Terminating
resistor
120Ω - 1/2W

Ground

r l

TXA

TXB

RXA

RXB

SG

FG

Shielded twisted-pair cable

0.2~1.5mm

(AWG size: 24~16)

RS485
Option Unit

TXA

TXB

RXA

RXB

SG

SHIELD

SW3,SW4 = OFF SW3,SW4 = OFF

2

RS485
Option Unit

TXA

TXB

RXA

RXB

SG

SHIELD

RS485
Option Unit

TXA

TXB

RXA

RXB

SG

SHIELD

SW3,SW4 = ON
Set terminating resistor

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connector C

Cable connection

Host
Computer

1.Transmit positive line (TXA)

2.Transmit negative line (TXB)

3.Receive positive line (RXA)

4.Receive negative line (RXB)

5.Signal line ground (SC)

6.Shield ground (FG)

More than 5cm

Leave a space more
than 5cm on left and
bottom side of option
unit for connecting the
communication cable.

123456

123456

SW

R R T T S S
X X X X G H
A B A B I
E
L
D

INVERTER 1

INVERTER 2

Another
RS-485
Option Unit

1.RXA

2.RXB

3.TXA

4.TXB

5.SG

6.SHIELD

RS485
OPTION UNIT

More than 5cm

Communication

N1

VF-S7VF-S7

Opening for communication connector
To open the cover of the communication
connector, slide it in the direction
indicated with a triangle mark.

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5.Dimensions

Dimensions of the RS-485 Option Unit (with connector terminal (removal side)) are shown below.
Make sure a space for connecting cables.
Use M3 screws to install.

Unit: mm

1.01.0

2.0

49.7

27.1 22.6

19.6

13.5

11.0

3.2hole

60.0

16.0

2.0

30.0

5.0

19.9 31.6

15.9

15.9

88.0

112.0

90.0

11.0

SW

INVERTER 1

RS485
OPTION UNIT

INVERTER 2

9.0

28.0

12.6

100.0

2.8

45°

3.2hole

19.6

8

13.5

1.0

15.9

13.2

1.0

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6.Communication parameters

Function Parameter Adjustable range Default value
Communication speed

Parity

ASD number

Communication error trip time(s)

F800

F801

F802

F803

0

:

1200bps

1

:

2400bps

2

:

4800bps

3

:

9600bps

0

:

NONE

1

:

EVEN

2

:

ODD
0~63
(0~31 in case that ASD has a
CPU whose version is V104 or
V103)
Note) Do not assign the same
ASD number to more than one
ASD in the same system.
0~100
(0:OFF, 1~100)

3

1

0

0

7.Specifications

Item Specifications
Part number RS4001Z-0
Service environment Indoors. Altitude of less than 1000m (3280 ft).

Must not be exposed to direct sunlight, subjected to corrosive and/or

explosive gases, vapor, dust, chips, cutting oil, grinding agent, etc.
Ambient temperature
Storage temperature
Relative humidity 20 to 90% (no condensation allowed)

Vibration
Cooling system Self-cooling

From -10°C to +50°C (14°F to 104°F)

From -25°C to +65°C (-13°F to 149°F)

2

5.9m/s

or less

8.Warranty

The RS-485 Option Unit is covered under warranty for period of 12 months from the date of installation,
but not to exceed 18 months from the date of shipment from factory. For further warranty or service
information, please contact Toshiba International Corporation.

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