Mitsubishi Electric 800 Series User manual

FR-A8ERS INSTRUCTION MANUAL
A
INVERTER
INVERTER
RS-485 interface board
INSTRUCTION MANUAL
INVERTER
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
PRE-OPERATION INSTRUCTIONS 1
INSTALLATION 2
WIRING AND CONFIGURATION 3
PARAMETER 4
PROTECTIVE FUNCTIONS 5
FR-A8ERS
RS-485 communication terminals
IB(NA)-0600641ENG-A(1605) MEE Printed in Japan Specifications subject to change without notice.

1
Thank you for choosing this RS-485 interface board for Mitsubishi inverter.
This Instruction Manual provides handling information and precautions for use of this product. Incorrect handling might cause an unexpected
fault. Before using this product, always read this Instruction Manual carefully to use this product correctly.
Please forward this Instruction Manual to the end user.
Electric Shock Prevention
Injury Prevention
Safety instructions
Do not attempt to install, operate, maintain or inspect the product until you have read through this Instruction Manual and appended
documents carefully and can use the equipment correctly. Do not use this product until you have a full knowledge of the equipment, safety
information and instructions. In this Instruction Manual, the safety instruction levels are classified into "Warning" and "Caution".
Incorrect handling may cause hazardous conditions, resulting in death or severe injury.
Incorrect handling may cause hazardous conditions, resulting in medium or slight injury, or may cause only material
damage.
The level may even lead to a serious consequence according to conditions. Both instruction levels must be followed
because these are important to personal safety.
Warning
While the inverter power is ON, do not remove the front cover or the wiring cover. Do not run the inverter with the front cover or the wiring cover removed. Otherwise
you may access the exposed high voltage terminals or the charging part of the circuitry and get an electric shock.
Do not remove the inverter front cover even if the power supply is disconnected. The only exception for this would be when performing wiring and periodic
inspection. You may accidentally touch the charged inverter circuits and get an electric shock.
Before wiring or inspection, LED indication of the inverter unit operation panel must be switched OFF. Any person who is involved in wiring or inspection shall wait
for at least 10 minutes after the power supply has been switched OFF and check that there is no residual voltage using a tester or the like. For some time after the
power-OFF, a high voltage remains in the smoothing capacitor, and it is dangerous.
Any person who is involved in wiring or inspection of this equipment shall be fully competent to do the work.
The product must be installed before wiring. Otherwise you may get an electric shock or be injured.
Do not touch the product or handle the cables with wet hands. Otherwise you may get an electric shock.
Do not subject the cables to scratches, excessive stress, heavy loads or pinching. Otherwise you may get an electric shock.
Caution
The voltage applied to each terminal must be the ones specified in the Instruction Manual. Otherwise a burst, damage, etc. may occur.
The cables must be connected to the correct terminals. Otherwise a burst, damage, etc. may occur.
The polarity (+ and -) must be correct. Otherwise a burst or damage may occur.
While power is ON or for some time after power OFF, do not touch the inverter as it will be extremely hot. Touching these devices may cause a burn.
Warning
Caution
Caution

2
Additional Instructions
The following instructions must be also followed. If the product is handled incorrectly, it may cause unexpected fault, an injury, or an electric
shock.
Caution
Transportation and mounting
Do not install or operate the product if it is damaged or has parts missing.
Do not stand or rest heavy objects on the product.
The mounting orientation must be correct.
Foreign conductive objects must be prevented from entering the inverter. That includes screws and metal fragments or other flammable substance such as oil.
If halogen-based materials (fluorine, chlorine, bromine, iodine, etc.) infiltrate into a Mitsubishi product, the product will be damaged. Halogen-based materials are
often included in fumigant, which is used to sterilize or disinfest wooden packages. When packaging, prevent residual fumigant components from being infiltrated
into Mitsubishi products, or use an alternative sterilization or disinfection method (heat disinfection, etc.) for packaging. Sterilization of disinfection of wooden
package should also be performed before packaging the product.
Trial run
Before starting operation, each parameter must be confirmed and adjusted. A failure to do so may cause some machines to make unexpected motions.
Warning
Usage
Do not modify the equipment.
Do not perform parts removal which is not instructed in this manual. Doing so may lead to fault or damage of the product.
Caution
Usage
When parameter clear or all parameter clear is performed, the required parameters must be set again before starting operations. Because all parameters return to
their initial values.
Static electricity in your body must be discharged before you touch the product.
Maintenance, inspection and parts replacement
Do not carry out a megger (insulation resistance) test.
Disposal
The product must be treated as industrial waste.
General instruction
Many of the diagrams and drawings in this Instruction Manual show the inverter without a cover or partially open for explanation. Never operate the inverter in this
manner. The cover must be reinstalled and the instructions in the Instruction Manual must be followed when operating the inverter.

3
— CONTENTS —
1 PRE-OPERATION INSTRUCTIONS 6
1.1 Unpacking and product confirmation............................................................................................................................6
1.1.1 Product confirmation ............................................................................................................................................................. 6
1.1.2 Component names................................................................................................................................................................ 7
1.1.3 Terminal layout ..................................................................................................................................................................... 8
1.1.4 Terminal connection diagrams.............................................................................................................................................. 9
1.1.5 Terminal specifications ......................................................................................................................................................... 9
2 INSTALLATION 10
2.1 Pre-installation instructions .........................................................................................................................................10
2.2 Installation procedure ...................................................................................................................................................10
3 WIRING AND CONFIGURATION 12
3.1 Connection of RS-485 terminals and wires.................................................................................................................12
3.2 System configuration of RS-485 terminals .................................................................................................................12
3.3 How to wire RS-485 terminals ......................................................................................................................................14
3.4 Two-wire type connection.............................................................................................................................................15
4 PARAMETER 16
4.1 Operation mode setting ................................................................................................................................................16
4.1.1 Operation mode switching and communication startup mode (Pr.79, Pr.340).................................................................... 16
4.2 Start command source and frequency command source during communication operation ................................19
4.2.1 Selection of command source in Network operation mode (Pr.550)................................................................................... 21
4.2.2 Selection of the command source of the PU operation mode (Pr.551)............................................................................... 21
4.2.3 Controllability through communication via the RS-485 terminals........................................................................................ 24
4.2.4 Operation at fault ................................................................................................................................................................ 26
4.3 Initial setting of operation via communication ...........................................................................................................27
4.3.1 Setting the communication protocol (Pr.549)...................................................................................................................... 28
4.3.2 Communication EEPROM write selection (Pr.342)............................................................................................................. 28

4
4.3.3 Operation selection at a communication error (Pr.502, Pr.779).......................................................................................... 29
4.4 Communication specifications of the Mitsubishi inverter protocol (computer link communication)...................32
4.4.1 Communication specifications ............................................................................................................................................ 34
4.4.2 Communication procedure.................................................................................................................................................. 35
4.4.3 Communication operation presence/absence and data format types................................................................................. 36
4.4.4 Data definitions ................................................................................................................................................................... 40
4.4.5 Response time .................................................................................................................................................................... 43
4.4.6 Retry count setting (Pr.335) ................................................................................................................................................ 44
4.4.7 Signal loss detection (Pr.336 RS-485 communication check time interval)........................................................................ 45
4.4.8 Instructions for the program ................................................................................................................................................ 46
4.4.9 Setting items and set data .................................................................................................................................................. 47
4.4.10 List of calibration parameters.............................................................................................................................................. 54
4.4.11 Operation command ........................................................................................................................................................... 55
4.4.12 Inverter status monitor ........................................................................................................................................................ 56
4.4.13 Multi command (HF0) ......................................................................................................................................................... 57
4.5 MODBUS RTU communication specification..............................................................................................................59
4.5.1 Communication specifications ............................................................................................................................................ 61
4.5.2 Outline................................................................................................................................................................................. 62
4.5.3 Message format .................................................................................................................................................................. 62
4.5.4 Message frame (protocol) ................................................................................................................................................... 64
4.5.5 Function code list ................................................................................................................................................................ 66
4.5.6 Read Holding Register (reading of data of holding registers) (H03 or 03).......................................................................... 67
4.5.7 Preset Single Register (writing of data to holding registers) (H06 or 06)............................................................................ 70
4.5.8 Diagnostics (diagnosis of functions) (H08 or 08) ................................................................................................................ 71
4.5.9 Preset Multiple Registers (writing of data to multiple holding registers) (H10 or 16) .......................................................... 72
4.5.10 Read Holding Register access Log (H46 or 70).................................................................................................................. 74
4.5.11 Error response .................................................................................................................................................................... 75
4.5.12 MODBUS register ............................................................................................................................................................... 78
4.5.13 Pr.343 Communication error count ..................................................................................................................................... 85
4.5.14 Output signal LF "alarm output (communication error warning)" ........................................................................................ 85
4.5.15 Signal loss detection (Pr.539 MODBUS RTU communication check time interval)............................................................ 86
4.6 Automatic connection with GOT ..................................................................................................................................88
4.6.1 Automatic connection system configuration........................................................................................................................ 88
4.6.2 GOT2000 series automatic recognition .............................................................................................................................. 89
4.7 Parameter reading/writing restriction when the password function is active .........................................................90

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4.8 Setting multiple parameters as a batch.......................................................................................................................91
5 PROTECTIVE FUNCTIONS 93

6PRE-OPERATION INSTRUCTIONS
1PRE-OPERATION INSTRUCTIONS
1.1 Unpacking and product confirmation
Take the product out of the package, check the product name, and confirm that the product is as you ordered and intact.
The product is an RS-485 interface board for the FR-A800-E (with a built-in Ethernet board) series inverter.
1.1.1 Product confirmation
Check the enclosed items.
FR-A8ERS...................................................1 Spacer.........................................................2 Mounting screw...........................................2

PRE-OPERATION INSTRUCTIONS 7
1
1.1.2 Component names
Symbol Name Description Refer
to page
a Terminal block Connect signal cables. 12
b Connector Connects to the interface board connector of the inverter. 10
cTerminating resistor selection
switch (SW1) Switches ON or OFF the internal terminating resistor. 8
(a)
(c)
(b)
Front view Rear view
SW1

8PRE-OPERATION INSTRUCTIONS
1.1.3 Terminal layout
Name Description
RDA1
(RXD1+) Inverter receive +
RDB1
(RXD1-) Inverter receive -
RDA2
(RXD2+)
Inverter receive +
(for branch)
RDB2
(RXD2-)
Inverter receive -
(for branch)
SDA1
(TXD1+) Inverter send +
SDB1
(TXD1-) Inverter send -
SDA2
(TXD2+)
Inverter send +
(for branch)
SDB2
(TXD2-)
Inverter send -
(for branch)
P5S
(VCC)
5V
Permissible load current 100 mA
SG
(GND)
Earthing (grounding)
(connected to terminal SD)
+-+ TXD RXD-VCC GND
+-+ TXD RXD-VCC GND
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
P5S
(VCC)
SG
(GND)
Terminating resistor switch
Initially-set to "OPEN".
Set only the terminating resistor
switch of the remotest inverter to
the "100Ω" position.
OPEN 100Ω

PRE-OPERATION INSTRUCTIONS 9
1
1.1.4 Terminal connection diagrams
1.1.5 Terminal specifications
Terminal
Symbol Terminal name Terminal function description
TXD+
Inverter transmission terminal The RS-485 terminals enables the communication by RS-485.
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 300 to 115200 bps
Overall length: 500 m
TXD-
RXD+ Inverter reception terminal
RXD-
GND
(SG) Earthing (grounding)
TXD+
Terminating
resistor
TXD-
RXD+
RXD-
GND
(SG)
Data
transmission
GND
Data
reception
VCC 5V
(Permissible load current 100mA)

10 INSTALLATION
2INSTALLATION
2.1 Pre-installation instructions
Check that the inverter's input power and the control circuit power are both OFF.
2.2 Installation procedure
(1) Remove the Ethernet board from the inverter. (Refer to the Instruction Manual of the inverter.)
(2) For the two mounting holes that will not be tightened with mounting screws, insert spacers.
(3) Fit the connector of the product to the guide of the connector on the inverter unit side, and insert the product as far as it
goes. (Install the product to the connector used for the Ethernet board.)
(4) Fit the two locations on the left and right of the product securely to the inverter by screwing in the mounting screws
supplied with the product. (tightening torque 0.33 N·m to 0.40 N·m) If the screw holes do not line up, the connector may not
be inserted deep enough. Check the connector.
Caution
With input power ON, do not install or remove the product. Otherwise, the inverter and the product may be damaged.
To avoid damage due to static electricity, static electricity in your body must be discharged before you touch the product.

INSTALLATION 11
2
NOTE
• The Ethernet board earth plate is not required for installing the product.
• Do not install the product to a plug-in option connector.
Spacer
Spacer
Inverter side
connector

12 WIRING AND CONFIGURATION
3WIRING AND CONFIGURATION
3.1 Connection of RS-485 terminals and wires
• The terminal size of the product is the same as that of the control circuit terminal block of the inverter. Refer to the
Instruction Manual (Detailed) of the inverter for the wiring method.
3.2 System configuration of RS-485 terminals
• Computer and inverter connection (1:1)
Computer
Twisted pair cable Twisted pair cable
∗Set the terminating resistor switch to the "100 Ω" position.
Inverter
RS-485
terminals
∗
Computer
Converter
RS-232C
cable
Inverter
RS-485
terminals
∗
RS-485
interface
terminals
Maximum
15 m

WIRING AND CONFIGURATION 13
3
• Combination of computer and multiple inverters (1:n)
Computer
Twisted pair cable
Twisted pair cable
RS-485
interface terminals
Inverter
RS-485
terminals
∗
Inverter
RS-485
terminals
∗
Inverter
RS-485
terminals
∗
Station 0 Station 1 Station n
∗Set only the terminating resistor switch of the
remotest inverter to the "100 Ω" position.
∗Set only the terminating resistor switch of the
remotest inverter to the "100 Ω" position.
Computer
RS-232C
converter
RS-232C
cable
Maximum
15 m
Converter
InverterInverter
Inverter
Station 0 Station 1 Station n
RS-485
terminals
∗
RS-485
terminals
∗
RS-485
terminals
∗

14 WIRING AND CONFIGURATION
3.3 How to wire RS-485 terminals
• 1 inverter and 1 computer with RS-485 terminals
• Multiple inverters and 1 computer with RS-485 terminals
 Make connection in accordance with the Instruction Manual of the computer to be used with.
Fully check the terminal numbers of the computer since they vary with the model.
 For the inverter farthest from the computer, set the terminating resistor switch to ON (100 side).
∗1
Computer
RDA
RDB
SDA
SDB
RSA
SG
RSB
CSA
CSB
FG
SG
∗2
-
+
-
+
SDB1 SDA1
RDB1 RDA1
∗1
Computer
RDA
RDB
SDA
SDB
RSA
SG
RSB
CSA
CSB
FG Station 0
SG SG
-
+
-
+
-
+
-
+
Station 1
SG SG
-
+
+
- -
+
+
-
Station n
SG
∗2
-
+
SDB1 SDA1
RDB1 RDA1 RDA2 RDB2
SDA2 SDB2
SDB1 SDA1
RDB1 RDA1
SDB1 SDA1
RDB1 RDA1
RDA2 RDB2
SDA2 SDB2
-
+

WIRING AND CONFIGURATION 15
3
NOTE
• For branching, connect the wires as shown below.
3.4 Two-wire type connection
• If the computer is 2-wire type, a connection from the inverter can be changed to 2-wire type by passing wires across
reception terminals and transmission terminals of the RS-485 terminals.
NOTE
• A program should be created so that transmission is disabled (receiving state) when the computer is not sending and
reception is disabled (sending state) during sending to prevent the computer from receiving its own data.
To receiving terminal
of the next inverter
To sending terminal
of the next inverter
To next inverter
To earth (ground)
terminal
To computer send
To computer receive
To computer ground
TXD RXDGND TXD RXDGND
TXD+
TXD-
RXD+
RXD-
SG
SG
InverterComputer
Pass a wire
Transmission
enable
Reception
enable

16 PARAMETER
4PARAMETER
4.1 Operation mode setting
4.1.1 Operation mode switching and communication startup mode (Pr.79, Pr.340)
Operation mode switching conditions
Operation mode switching conditions
• The inverter is at a stop;
• Both the STF and STR signals are off; and
• The Pr.79 Operation mode selection setting is correct.
(Set with the operation panel of the inverter.)
Operation mode selection at power ON and at restoration from instantaneous power failure
The operation mode at power ON and at restoration from instantaneous power failure can be selected.
Set a value other than "0" in Pr.340 Communication startup mode selection to select the network operation mode.
After started in network operation mode, parameter write from the network is enabled.
NOTE
• Change of the Pr.340 setting is valid when powering on or resetting the inverter.
• Pr.340 can be changed with the operation panel independently of the operation mode.
• When setting a value other than "0"in Pr.340, make sure that the initial settings of the inverter are correct.
• Refer to the Instruction Manual (Detailed) of the inverter for details of Pr.79, Pr.340.
To enable RS-485 communication operation via the RS-485 terminals on the product, select the Network operation
mode for the inverter.

PARAMETER 17
4
Pr.340
setting
Pr.79
setting
Operation mode at power-ON, at power
restoration, or after a reset Operation mode switching
0
(initial
value)
0 (initial
value) External operation mode Switching among the External, PU, and NET operation modes is enabled.
1 PU operation mode PU operation mode fixed
2 External operation mode
Switching between the External and NET operation modes is
enabled.
Switching to PU operation mode is disabled
3, 4 External/PU combined operation mode Operation mode switching is disabled
6 External operation mode Switching among the External, PU, and NET operation mode is
enabled while running.
7
X12 (MRS) signal ON External operation mode Switching among the External, PU, and NET operation modes is
enabled.
X12 (MRS) signal OFF External operation mode External operation mode fixed. (Forcibly switched to External
operation mode.)
1, 2
0NET operation mode
Same as Pr.340="0" setting
1 PU operation mode
2NET operation mode
3, 4 External/PU combined operation mode
6NET operation mode
7X12 (MRS) signal ON NET operation mode
X12 (MRS) signal OFF External operation mode
10, 12 
0NET operation mode Switching between the PU and NET operation mode is enabled
1 PU operation mode Same as Pr.340="0" setting
2NET operation mode NET operation mode fixed
3, 4 External/PU combined operation mode Same as Pr.340="0" setting
6NET operation mode Switching between the PU and NET operation mode is enabled
while running.
7 External operation mode Same as Pr.340="0" setting

18 PARAMETER
 The setting value "2 or 12" of Pr.340 is used primarily during communication operation of the inverter via the RS-485 terminals of the
product.
Even if an instantaneous power failure occurs while Pr.57 Restart coasting time ≠"9999" (with automatic restart after instantaneous
power failure), inverter continues operation at the condition before the instantaneous failure.
When Pr.340 = "1 or 10", if a power failure occurs while the start signal is being input through communication, the start signal is OFF at
power restoration.
 The operation mode cannot be directly changed between the PU operation mode and Network operation mode.
 Switching between the PU and NET operation modes is available with the key on the operation panel and the X65 signal.

PARAMETER 19
4
4.2 Start command source and frequency command source during
communication operation
The start and frequency commands from an external device are enabled during communication via the RS-485
terminals of the product or the communication option.
The command source in the PU operation mode can also be selected.
Pr. Pr.
group Name Initial value
Setting
range Description
338 D010
Communication
operation
command source
0
0 Start command source is communication.
1 Start command source is external.
339 D011
Communication
speed command
source
0
0 Frequency command source is communication.
1 Frequency command source is external.
2
Frequency command source is external. (When there is no external input, the
frequency command via communication is valid, and the frequency command
from terminal 2 is invalid.)
550 D012
NET mode
operation
command source
selection
9999
0The communication option is the command source when in the NET
operation mode.
1The RS-485 terminals are the command source when in the NET operation
mode.
5
The command source is specified as communication via the Ethernet
connector in the NET operation mode.
Do not select this setting while the product is installed.
9999
Communication option is recognized automatically.
Normally, the RS-485 terminals are the command source. When the
communication option is mounted, the communication option is the command
source.