E6580938
RS485 Converter Unit Instruction Manual
RS4002Z-0
© TOSHIBA SCHNEIDER INVERTER CORPORATION
2001
All Rights Reserved.
NOTE
1. Make sure that this instruction manual is delivered to the end user of the RS485
converter unit.
2. Read this manual before installing or operating the RS485 Converter unit.
And keep it in a safe place for reference.
E6580938
−1−
Safety precautions
On the inverter and in its instruction manual, important information is contained for preventing injuries
to users and damages to assets and for proper use of the device. Read the instruction manual
attached to the inverter along with this instruction manual for completely understanding the safety
precautions and adhere to the contents of these manuals.
■■■■
Handling in general
Danger
Never
Disassemble
▼ Never disassemble, modify or repair the product.
Disassembling the product could cause electric shocks, fire or injuries.
For repairs, call your agency.
Prohibited
▼
Do not remove connectors when the power is on.
It could lead to electric shocks.
▼ Do not put or insert foreign objects such as waste cable, bars, or wires into the product.
It could lead to electric shocks or fire.
▼ Do not splash water over the product.
It could lead to electric shocks or fire.
Mandatory
▼ Wiring should be conducted after turning the inverter power off.
▼ Turn off the power immediately in case any abnormalities such as smokes, smells or
abnormal noise are found.
Neglect of these conditions could lead to fire.
For repairs, call your agency.
■■■■
Transportation and installation
Danger
Prohibited
▼ Do not install or operate the inverter if it is damaged or any part is missing from it.
Operating the inverter in a defective condition could lead to electric shocks or fire.
For repairs, call your agency.
▼ Do not put any inflammable material near the product.
It could catch fire if the product sparks because of a breakdown and the like.
▼ Do not install the product where it could be splashed with water and the like.
It could lead to electric shocks or fire.
Mandatory
▼ The product must be used under environmental conditions prescribed in this instruction
manual.
Using the product under conditions not specified by the instruction manual could lead to
breakdown.
Cautions
Prohibited
▼ Do not install the product in any place subject to vibrations or it could fall.
Otherwise it can cause injury to people.
E6580938
−2−
■
Wiring
Danger
Mandatory
▼
Turn off input power before wiring.
Wait at least ten minutes and check to make sure that the charge lamp (on the inverter
main unit) is no longer lit.
▼
Tighten the screws on the terminal board to specified torque.
If the screws are not tightened to the specified torque, it could lead to fire.
■■■■
About operation
Danger
Prohibited
▼ Do not wipe the body with a wet cloth.
It could lead to electric shocks.
▼ Do not pull on the cable
It could cause damage or error.
■■■■
About disposal of the product
Warning
Mandatory
▼
Dispose of the
product
as an industrial waste.
Unless it is disposed of as an industrial waste, it will become risks for human
injury.
Notes on use
NOTES
▼ Avoid installation locations that may be subjected to rapid changes in ambient temperature
or/and humidity.
▼ Route the transmission cable separate from the inverter input/output power wiring.
When disconnecting connection cable, make sure to hold its connector with care not to give
unreasonable stress to the cable and the unit.
▼ Separate the SHIELD terminal ground of the RS485 converter unit from those of
the inverter and the motor. It could cause malfunction due to noise.
▼ Since connectors of optional cables have locking pawls for disconnection prevention at the
inverter 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
malfunction or breakdown
▼ Connect an electromagnetic contactor or the like between the inverter and the power
source to secure external control of emergency stop of operation.
E6580938
−3−
Introduction
Thank you for purchasing the “RS485 Converter Option Unit(RS4002Z)” for TOSVERT series inverter.
Using this RS485 Option Unit, a communication between the inverter, which has the common serial
option (communication) connector, and a host computer is available.
Please read the entire manual carefully before attempting to control your inverter via RS485 serial
connection. Besides this instruction manual, the “Serial Communications Function Manual” is needed
to develop software which communicates with the inverter. In such a case, consult with our branch
office or sales office about it.
In addition, it has this manual kept to the operator using "RS485 Converter Unit", and please use it for
future maintenance and inspection
■■■■
Explanation of part number of RS485 Option Unit
ＲＳ４００２Ｚ −０
■■■■
Check of accessories
The RS485 Converter Unit is shipped together with the following items in the package. Contact your
sales agency if any of these is missing.
(1) RS485 Converter Unit …… 1 unit (RS4002Z)
(2) Instruction manual of RS485 Option Unit……1 copy
(E6580938)
(3) Connector terminal (remover side)……1 pcs
(TMSTBP 2.5/6-ST-5.08 : Phoenix Contact)
Note
The RS485 Option Unit (Part Number : RS4002Z) is not provided with connection cable
between the inverter and Option Unit. This should be purchased separately.
Part number of connection cable
between the Inverter and Option Unit
Cable length
CAB0011 1m (1.2m)
CAB0013 3m (3.6m)
CAB0015 5m (4.8m)
M
A
N
U
A
L
Revision number
Cable length (Cable length between inverter and Option Unit)
Z: Without cable
Model number of RS485 Option Unit
Symbol of RS485
E6580938
−4−
Table of Contents
1. OVERVIEW
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5
2. COMMUNICATION SPECIFICATIONS
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3. NAMES AND FUNCTIONS OF MAIN PARTS
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4. CONNECTION WITH EQUIPMENT
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4.1. Installation of RS485 converter unit
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4.2. Wiring of inverter cables
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4.3. Wiring of RS485 communication cable
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9
4.3.1. Connection of RS485 communication cable
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5. DIMENSIONS
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11
6. COMMUNICATION PARAMETERS
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7. SPECIFICATIONS
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8. WARRANTY
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E6580938
−5−
1. Overview
By using RS485 Converter Unit, a network can be constructed that allows communication between a
host computer or PLC etc. and multiple inverter units.
A maximum of 32 Option Units can be connected on the same network. And 8 inverters can be
connected to one RS485 Converter Unit. A maximum of 256 inverters
＊
can be connected on the same
network.
＊
Only when communicating between inverters, and the number is limited when communicating with
individual inverters depending on the function of each inverter.)
Host computer
RS4002Z
INV
Connection with up to
8 inverters
(*) A maxim um number of inverters connectable is 32 × 8 = 256. This number applies only to
communications between inverters. Up to 248 units can be connected in broadcast
comm unication. In the case of indiv idual com m unications, the number is limited by the
function of each inverter.
Check the transmission format specification of the inverter to be used.
Example of VF-A7 series inverter
・
Communication between inverters: 32 × 8 = 256 units m ax
・
Broadcast communication: 31 × 8 = 248 units m ax
(31 units because of 1 unit needed for PC.)
・
Individual communication (ASCII mode): 100 units max
・
Individual communication (binary mode): 64 units max
RS485
<System configuration>
INV INV INV INV INV INV INV
RS4002Z
INV INV INV INV INV INV INV INV
2.
Communication specifications
Item Specifications
Interface Conforming to EIA RS485 standard
Configuration 4-wire/2-wire, bus type (A terminating resistor is
required at both ends of the system)
Transmission method Semi-duplex
Communication Distance 1,000m maximum
Number of option units connectable 32 units maximum (31 units when PC is connected)
Number of inverters connectable per option unit 8 units maximum
Number of inverters on the Same Network 256 units maximum
（※）
Communication Line Isolation Not isolated
Communication Speed 1200/2400/4800/9600/19200 baud selectable
(parameter and switch selection)
Bit length 11 or12 bits (switch selectable)
E6580938
−6−
3.
Names and functions of main parts
The outline view of the RS485 converter unit and the names of each part
<How to remove the setting switch cover>
Insert a flat-head screwdriver into a
slit marked with ∆ on the right-hand
side of the unit to remove the cover.
∆
mark on the right-hand side
of the unit
Connectors CN 1 to 8 to
connect with inverters
View with the cover removed
Terminal board cover
Terminal board for RS485
communication cable
(connector side)
To be connected to the
inverter
’s connector for
common serial option
RS4002Z
１
２ ３
４
５
６
７
８
Setting switches for
communication speed and
bit
length
ON
１ ４
ON
SW2
SW
1
１ ４
Setting switches for
terminating resistors and
wiring method
(4-wire/2-wire)
Speed SW1‑1 SW1‑2 SW1‑3
19200bps OFF OFF ON
9600bps ON ON OFF
4800bps OFF ON OFF
2400bps ON OFF OFF
1200bps OFF OFF OFF
Set the same communication speed as set for
p
arameter (F800) in the inverter unit.
Bitlength SW1‑4
12bit OFF
11bit ON
Set the transmission bit length set on the inverter side
Set to 12 bits if the system has parity bit.
→
Start(1)+Data(8)+Parity(1)+Stop(2)=12bit
Terminating
resistor
110Ω‑1/2W
SW2‑3 SW2‑4
Not
connected
OFF OFF
Connected
ON ON
SW2-3 (ON): Reception side (between RXA and RXB)
terminating resistor is connected
SW2-4 (ON): Transmission side (between TXA and
TXB) terminating resistor is connected
Wiringmethod SW2‑1 SW2‑2
4‑wire OFF OFF
2‑wire ON ON
When communication is made in binary mode, inverters
with 2-wire system (G command function is provided)
can only communicate in 2-wire system
SW2-1 (ON): RXA-TXA shorted
SW2-2
(ON)
: RXB-TXB shorted
Terminal board for RS485
communication cable
(plug side)
RXARXBTXATXBSGSHIELD
Terminating resistors
should be connected
at both ends of the
system
.
E6580938
−7−
4. Connection with equipment
Connect the RS485 converter unit with inverters as follows:
(1) Turn off input power of the inverter and wait at least ten minutes and check to make sure that the
charge lamp is no longer lit.
(2) Set the communication speed, bit length and wiring method (4-wire or 2-wire) using the switches
of the RS485 converter unit. Furthermore, when communicating in the binary mode, the inverters
conforming to 2-wire system (G command function is provided) can only be communicated in 2-
wire system. When using the binary method but without the 2-wire system function, use 4-wire
system.
Use the same communication speed, bit length and wiring method for RS485 converter units that
are connected in the same network. (Refer to page 6.)
(3)
Connect terminating resistor in both ends of units. The RS485 Option Unit has internal
terminating resistor. Set SW2-3 and SW2-4 to ON to connect these terminating resistors.
(Refer to page 6.)
(4) Install the RS485 Option Unit on a metal panel. (Refer to page 8.)
(5) Connect the RS485 communication cable to the removable terminal block. (Refer to page 9 and
page 10.).
Be sure not to short any wires.
(6) Connect the shield of the twisted pair cable to the SHIELD terminal on each RS485 Option Unit,
and make the ground connection. Do not connect the shield of the twisted pair cable to a power
ground or any other noise-producing ground connection
(7) Insert the removable terminal block back into the RS485 Option Unit.
(8) Connect the communication connectors (CN1 to 8) of the RS485 Option
Unit to the inverter’s common serial option (communication) connector of the with the optional
cable.
(9) Turn on the power of the inverter
(10) Set the communication parameters of the inverter. (Refer to page 12.)
(11) Turn off the power of the inverter and then turn it on again if the parameters have been changed.
* Transmission/Reception is automatically changed in the RS485 converter unit.
This unit can be used only in semi-duplex transmission.
* Observe the following when data is transmitted from PC to the inverter.
To prevent a possible error due to the difference of communication speed between the equipment,
provide a time interval for one bit data length or more from the time data is received before starting
data to the inverter.
Time for one bit data = 1 ÷ communication speed
(Example) in the case of 19200bps: 1 ÷ 19200 = 52µs
E6580938
−8−
4.1. Installation of RS485 converter unit
Install the unit on the panel of a cabinet etc. and secure the unit with two M4 screws.
Install the cables (connection cables between inverters and converter unit, and RS485 communication
cable). Separate the cables at least 20 cm from the main circuit cables. Do not bundle them together.
Attach the cables to the wall inside the cabinet etc.
*1 Unit interconnection screw hole: not used for this option.
4.2. Wiring of inverter cables
Observe the following when wiring is carried out:
♦ Connect the inverter’s common serial option connector and this unit’s inverter connection connector
with optional connection cable.
Connection cable: CAB0011 (1m), CAB0013 (3m), CAB0015 (5m)
♦ Separate the connection cables at least 20 cm from the main circuit cables. Do not bundle them
together.
Wiring them close to each other may lead to malfunction due to noise.
To inverter’s common
serial option connectors
Ｍ４
RS485 communication cable
Ｍ４
Connection cables between
inverters and converter unit
Ｍ４
Ｍ４
*1
*1
*1
*1
Connection cables between
inverters and converter unit
E6580938
−9−
4.3. Wiring of RS485 communication cable
Observe the following when wiring is carried out:
♦ Use shielded twist cables of 0.2 to 2.5 mm
2
for communication cables. Select wire size depending on
the transmission distance referring to the table below.
Use the same type of wires inside the system.
Recommended transmission cable
Item Specification
Transmission
cable
Shielded twist cable
Connection
method
Twist RXA and RXB wires and twist TXA and TXB.
Twist RXA (or TXA) and RXB (or TXB) wires for 2-wire system.
Note: Connect a terminating resistor at both ends of wires.
Cable type Cable length
Recommended maker
CPEV-CU
1.2 mmφ (single wire)
1000 m or less
KMPEV-SB
0.75 mm
2
(twisted wire)
700 m or less
KMPEV-SB
0.5 mm
2
(twisted wire)
500 m or less
Cable length
GECLS-9004
AWG24 (0.2 mm
2
) (single wire)
300 m or less
SHOWA W IRE &
CABLE Co. Ltd.,
♦ Remove the sheath of wire about 10 mm from the end of wire.
♦ Use a flat-head screwdriver with the blade thickness of 0.6 mm and width of 3.5 mm.
♦ Screw tightening torque for the terminal board screws should be 0.5 to 0.6 N·m
♦ Separate the communication cables at least 20 cm from the main circuit cables. Do not bundle
them together.
Wiring them close to each other may lead to malfunction due to noise.
E6580938
−10−
4.3.1.
Connection of RS485 communication cable
Signal name Name
RXA Receiving data (+)
RXB Receiving data (−)
TXA Transmitting data (+)
TXB Transmitting data (−)
SG Signal ground
SHIELD Shield
Upper and lower wire inlets
are connected inside.
■
Removable terminal block
Maker : Phoenix Contact
Type: TMSTBP 2.5/6-ST-5.08
Claw side
RXA
RXB
TXA
TXB
SG
SHIELD
Refer to the following together with items described above as to cable connection to terminal block.
•
Do not connect the ground of shield to power ground such as that of the inverter.
•
Se
p
arate the communication cables at least 200mm from the main circuit cables.
Recommended
terminating
resistor
120Ω-1/2W
SW2-1、SW2-2=OFF
SW2-3、SW2-4=ON
(Terminating resistor setting)
Grade 3 ground (Ground resistance 100Ω)
Host computer
RS485
converter unit
TXA
TXB
RXA
RXB
SG
FG
RXA
RXB
TXA
TXB
SG
SHIELD
RXA
RXB
TXA
TXB
SG
SHIELD
RXA
RXB
TXA
TXB
SG
SHIELD
Shielded twist cable
■
Connection exam
p
le for 2-wire system
Grade 3 ground (Ground resistance 100Ω)
Host computer
＋
−
SG
FG
RXA
RXB
TXA
TXB
SG
SHIELD
RXA
RXB
TXA
TXB
SG
SHIELD
RXA
RXB
TXA
TXB
SG
SHIELD
Shielded twist cable
■
Connection exam
p
le for 4-wire system
+: Transmitting and receiving data
(Positive)
−
: Transmitting and receiving data
(Negative)
SW2-1〜SW2-4=OFF
SW2-1、SW2-2=ON
SW2-3、SW2-4=OFF
SW2-1、SW2-2=ON
Either SW2-3 or SW2-4
should be set to ON.
In this example,
SW2-3 = OFF, SW2-4 = ON
(Terminating resistor setting)
SW2-1、SW2-2=ON
SW2-3、SW2-4=OFF
* Terminal numbers of host computer differ with models.
Read the instruction manual of host computer before wiring.
SW2‑4=ON
SW2‑3=ON
SW2‑4=ON
RS485
converter unit
RS485
converter unit
RS485
converter unit
RS485
converter unit
RS485
converter unit
Recommended
terminating
resistor
120Ω-1/2W
SW2-1〜SW2-4=OFF
E6580938
−11−
5.
Dimensions
■
Outline drawing of RS485 Converter Unit (RS4002Z) (Unit: mm)
Dimension of the unit body
１６０
１００
Ｒ２.５
１８０
１６８
６
２５
１６.５
８.５
Ｒ２.５
４
１
３０
５
Panel
installation
dimension
E6580938
−12E−
6.
Communication parameters
Be careful the parameter setting range, initial value, etc. may change with the inverter models.
Function Parameter Note
Communication speed
f800
Communication speed must be the same in the same network
(Inverters, Host computer, RS485 units).
Parity
f801
Parity setting must be the same in the same network
(Inverters, Host computer).
Furthermore, set bit length using the setting switch referring to
parity bit specification.
(Refer to page 6.)
Inverter number
f802
Do not assign the same inverter number in the same network
(Inverters, Host computer).
Need to set the inverter number in the transmission format.
7.
Specifications
Item Specifications
Part number RS4002Z-0
Service environment
Indoors. Altitude of less than 1000m. (3280ft)
Must not be exposed to direct sunlight, subjected to corrosive and/or explosive
gases, vapor, dust, chips, cutting oil, grinding agent, etc.
Ambient temperature From -10°C to +50°C (14°F to 104°F)
Storage temperature From -25°C to +65°C (-13°F to 149°F)
Relative humidity 20 to 90% (no condensation allowed)
Vibration
5.9 m/s
2
(0.6G) or less (10 to 55 Hz) (Conforming to JIS C0040)
8.
Warranty
Any part of the RS485 Option Unit that proves defective will be repaired free of charge under the
following conditions:
1. If and when a trouble occurs on the option unit properly installed and handled within one year of
delivery, and if the trouble is clearly attributable to defects inherent in our design and manufacture,
the product will be repaired free of charge.
2. The warranty covers only the delivered option unit.
3. Even in the term of the warranty, repair service will be charged for the following cases.
1) Fault or damage resulting from misuse, unauthorized modification or repair.
2) Fault or damage resulting from falling down of the product or traffic accident during transportation.
3) Fault or damage originating from fire, salt water/salty breezes, some kind of gas, earthquake,
storm or flood, lightning, abnormal supply voltage, other natural disasters.
4) Fault or damage caused by improper use of this option unit as it is used for a purpose out of its
original function.
4. If there is another special warranty contracted for this option unit, the special warranty has
priority over this warranty.
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