Hitachi MICRO-EHV+ Instructions for use

HITACHI PROGRAMMABLE CONTROLLER
APPLICATION MANUAL
NJI-611B(X)
IEC 61131-3 Compliant PLC
(SERVICE MANUAL)

○Warranty period and coverage
The warranty period is the shorter period either 18 months from the data of manufacture or 12 months from the date
of installation.
However within the warranty period, the warranty will be void if the fault is due to;
(1) Incorrect use as directed in this manual and the application manual.
(2) Malfunction or failure of external other devices than this unit.
(3) Attempted repair by unauthorized personnel.
(4) Natural disasters.
The warranty is for the PLC only, any damage caused to third party equipment by malfunction of the PLC is not
covered by the warranty.
○Repair
Any examination or repair after the warranty period is not covered. And within the warranty period ant repair and
examination which results in information showing the fault was caused by ant of the items mentioned above, the
repair and examination cost are not covered. If you have ant questions regarding the warranty please contact with
your supplier or the local Hitachi Distributor. (Depending on failure part, examination might be impossible.)
○Ordering parts or asking questions
When contacting us for repair, ordering parts or inquiring about other items, please have the following details ready
before contacting the place of purchase.
(1) Model
(2) Manufacturing number (MFG.No.)
(3) Details of the malfunction
○Reader of this manual
This manual is described for the following person.
・Person considering the introduction of PLC
・PLC system engineer
・Person handling PLC
・Manager after installing PLC
Warning
(1) Reproduction of the contents of this manual, in whole or in part, without written permission of Hitachi-IES, is
prohibited.
(2) The content of this document may be changed without notice.
(3) While efforts have been made to be accurate, if any wrong or missing information is found, please contact us.
Microsoftand Windowsare either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.

Safety Precautions
Read this manual and related documents thoroughly before installing, operating, performing preventive maintenance or
performing inspection, and be sure to use the unit correctly. Use this product after acquiring adequate knowledge of the
unit, all safety information, and all cautionary information. Also, make sure this manual enters the possession of the
chief person in charge of safety maintenance.
Safety caution items are classifies as “Danger”and “Caution”in this document.
DANGER
: Identifies information about practice or circumstances, which may lead to personal injury or
death, property damage, or economic loss.
CAUTION
: Identifies information about practice or circumstances, which may lead to personal injury,
property damage, or economic loss.
However, depending on the circumstances, items marked with may result in major accidents.
The both marks show important information. Be sure to follow the instructions.
Icons for prohibited items and required items are shown below:
: Identifies prohibition. For example, when open flames are prohibited,
is indicated.
: Identifies requirement. For example, when grounding must be performed, is indicated.
1. Installation
CAUTION
Use this product in an environment as described in the catalog or this document.
If this product is used in an environment subject to high temperature, high humidity, excessive dust, corrosive
gases, vibration or shock, it may result in electric shock, fire or malfunction.
Be sure to install the PLC according to this manual. Failure to do so could result in damage by falling off,
failure or malfunction.
Do not allow foreign objects such as wire chips to enter the unit.
They may become the cause of fire, malfunction or failure.
CAUTION

2. Wiring
REQUIRED
The PLC must be grounded (FE terminal).
Failure to do so could result in injury to personnel or causing it to malfunction.
CAUTION
Always use the power supply voltage listed in specifications. Using other voltage may damage the equipment or
present a risk of fire.
The wiring operation should be performed by a qualified personnel.
Failure to do so could result in fire, damage or electric shock.
3. Precautions when using the unit
DANGER
Do not touch the terminals while the power is on. There is a risk of electric shock.
Appropriate emergency stop circuit, interlock circuitry and similar safety measures should be added to the PLC
system to ensure safety in the event of incorrect, missing or abnormal signals caused by broken signal lines,
momentary power interruptions or other causes. Do not share the power supply of relay output and interlock
circuitry because relay output might not work properly due to switching noise from interlock circuitry.
CAUTION
When performing program change, forced output, RUN, STOP, etc., while the unit is running, be sure to check
system safety carefully. Failure to do so could lead to damage to equipment.
Supply power according to the power–up order.
Failure to do so could lead to damage to equipment or malfunction.
4. Preventive maintenance
DANGER
Do not connect the (+) and (-) of the battery in reverse polarity. Do not recharge, disassemble, heat, place in
fire, or short circuit the battery. There is a risk of explosion or fire.
PROHIBITED
Do not attempt to disassemble, repair or modify any part of the PLC.
Electric shock, malfunction or failure may result.
CAUTION
Turn off power to the PLC before mounting or dismounting the module
Electric shock, malfunction or failure may result.

Revision History
No.
Description of revision
Date of
revision
Manual number
1
The first edition
Feb. 2014
NJI-611(X)
2
EtherCAT master and Modbus-TCP master added
Feb. 2015
NJI-611A(X)
3
20-point Basic unit added and IDE updated to HX-CODESYS
Oct. 2019
NJI-611B(X)

MEMO

Table of Contents
Chapter 1 Introduction 1-1 to 1-2
1.1 Unpacking..................................................................................................................................... 1-1
1.2 Instruction Manuals....................................................................................................................... 1-1
1.3 System overview........................................................................................................................... 1-2
Chapter 2 Specifications 2-1 to 2-48
2.1 General specifications................................................................................................................... 2-1
2.2 Performance specifications........................................................................................................... 2-2
2.3 EtherCAT master specifications ................................................................................................... 2-3
2.4 Product lineup............................................................................................................................... 2-4
2.5 Current consumption..................................................................................................................... 2-6
2.6 Input specifications ....................................................................................................................... 2-7
2.7 Output specifications..................................................................................................................... 2-8
2.8 Power supply for sensors.............................................................................................................. 2-11
2.9 Serial port specifications............................................................................................................... 2-12
2.9.1 Physical layer interface .................................................................................................... 2-12
2.9.2 RS-232C communication specifications .......................................................................... 2-12
2.10 USB communication port specifications ....................................................................................... 2-13
2.11 Ethernet port specifications........................................................................................................... 2-13
2.11.1 Physical layer interface .................................................................................................... 2-13
2.11.2 Ethernet communication specifications............................................................................ 2-13
2.12 USB memory port specifications................................................................................................... 2-14
2.13 Backup.......................................................................................................................................... 2-14
2.14 LED indication............................................................................................................................... 2-15
2.15 64-point Basic unit......................................................................................................................... 2-16
2.15.1 Name and function of each part....................................................................................... 2-16
2.15.2 Terminal layout and wiring ............................................................................................... 2-18
2.16 40-point Basic unit......................................................................................................................... 2-19
2.16.1 Name and function of each part....................................................................................... 2-19
2.16.2 Terminal layout and wiring ............................................................................................... 2-21
2.17 20-point Basic unit......................................................................................................................... 2-22
2.17.1 Name and function of each part....................................................................................... 2-22
2.17.2 Terminal layout and wiring ............................................................................................... 2-24
2.18 Expansion unit............................................................................................................................... 2-25
2.18.1 Name and function of each part....................................................................................... 2-25
2.18.2 Terminal layout and wiring ............................................................................................... 2-26
2.19 External dimensions...................................................................................................................... 2-36
2.20 Option board ................................................................................................................................. 2-37
2.20.1 OBV-NES......................................................................................................................... 2-37
2.20.2 OBV-485A........................................................................................................................ 2-38
2.20.3 OBV-485TAI/485TAO/AIO............................................................................................... 2-39
2.20.4 OBV-AIG/AIOG/RTD........................................................................................................ 2-41
2.20.5 Communication cable connection.................................................................................... 2-46
2.20.6 Installation of option board............................................................................................... 2-47
2.21 Accessories................................................................................................................................... 2-48
2.21.1 Expansion cable............................................................................................................... 2-48

Chapter 3 Programming 3-1 to 3-94
3.1 Installation..................................................................................................................................... 3-1
3.1.1 System Requirements...................................................................................................... 3-1
3.1.2 Installation of HX-CODESYS........................................................................................... 3-1
3.1.3 Installation of USB driver.................................................................................................. 3-3
3.2 Startup........................................................................................................................................... 3-5
3.3 I/O Configuration........................................................................................................................... 3-7
3.3.1 Scan For Devices for expansion units ............................................................................. 3-7
3.3.2 Option board .................................................................................................................... 3-9
3.3.3 Update Device.................................................................................................................. 3-10
3.3.4 I/O address....................................................................................................................... 3-11
3.4 I/O-update..................................................................................................................................... 3-15
3.5 POU and task................................................................................................................................ 3-16
3.6 Variables....................................................................................................................................... 3-18
3.6.1 Data memory.................................................................................................................... 3-18
3.6.2 Marker memory................................................................................................................ 3-19
3.6.3 Available characters for variable names.......................................................................... 3-20
3.6.4 Numeric literals ................................................................................................................ 3-20
3.6.5 Data types........................................................................................................................ 3-21
3.6.6 Local variable................................................................................................................... 3-22
3.6.7 Global variable ................................................................................................................. 3-23
3.7 Configuration................................................................................................................................. 3-24
3.8 Communication settings................................................................................................................ 3-25
3.9 Programming ................................................................................................................................ 3-27
3.10 Login ............................................................................................................................................. 3-29
3.11 Boot application............................................................................................................................. 3-32
3.12 Source Download / Upload ........................................................................................................... 3-33
3.13 Run / Stop / Reset......................................................................................................................... 3-34
3.14 Global network variables............................................................................................................... 3-35
3.15 Modbus-TCP/RTU ........................................................................................................................ 3-38
3.15.1 Introduction ...................................................................................................................... 3-38
3.15.2 Modbus-TCP master (client)............................................................................................ 3-39
3.15.3 Modbus-TCP slave (server)............................................................................................. 3-42
3.15.4 Modbus-RTU master........................................................................................................ 3-43
3.15.5 Modbus-RTU slave .......................................................................................................... 3-46
3.16 EtherCAT master.......................................................................................................................... 3-47
3.16.1 Configuration.................................................................................................................... 3-47
3.16.2 Online settings ................................................................................................................. 3-48
3.16.3 Ethernet speed................................................................................................................. 3-49
3.16.4 Cycle time of EtherCAT task............................................................................................ 3-49
3.16.5 Programming ................................................................................................................... 3-51
3.16.6 Wiring............................................................................................................................... 3-52
3.16.7 Important restrictions ....................................................................................................... 3-52
3.17 High speed counter....................................................................................................................... 3-54
3.18 Interrupt input................................................................................................................................ 3-63
3.19 Pulse Train Outputs ...................................................................................................................... 3-66
3.20 PWM Outputs ............................................................................................................................... 3-72

3.21 Option board ................................................................................................................................. 3-74
3.21.1 Supported function........................................................................................................... 3-74
3.21.2 Port number setting.......................................................................................................... 3-75
3.21.3 Analog input/output setting............................................................................................... 3-75
3.21.4 Modbus-RTU communication .......................................................................................... 3-77
3.21.5 General purpose communication..................................................................................... 3-77
3.22 USB program transfer................................................................................................................... 3-78
3.22.1 Download from USB to PLC............................................................................................. 3-78
3.22.2 Upload from PLC to USB................................................................................................. 3-79
3.22.3 Verify between PLC and USB.......................................................................................... 3-79
3.22.4 Boot from USB................................................................................................................. 3-79
3.23 USB data logging (File system)..................................................................................................... 3-80
3.24 Web visualization.......................................................................................................................... 3-83
3.25 Libraries ........................................................................................................................................ 3-85
3.25.1 How to install.................................................................................................................... 3-85
3.25.2 Real time clock................................................................................................................. 3-86
3.25.3 Serial communication....................................................................................................... 3-87
3.26 Troubleshooting............................................................................................................................ 3-89
3.26.1 Error indication................................................................................................................. 3-89
3.26.2 Error code ........................................................................................................................ 3-89
3.27 Version.......................................................................................................................................... 3-93
3.28 Package Manager......................................................................................................................... 3-94
Chapter 4 Installation 4-1 to 4-8
4.1 Installation..................................................................................................................................... 4-1
4.2 Wiring............................................................................................................................................ 4-3
Chapter 5 Maintenance 5-1 to 5-4
5.1 Daily and Periodic Inspection........................................................................................................ 5-1
5.2 Product Life................................................................................................................................... 5-2
Appendix Known Restrictions A-1 to A-4

MEMO

1 –1
Chapter 1 Introduction
Thank you very much for choosing Hitachi Programmable Controller (hereinafter referred to as PLC), MICRO-EHV+
series PLC.
1.1 Unpacking
(1) Installation of a battery
The battery for MICRO-EHV+ series PLC is optional. If you need real time clock function or retentive data memory,
you need to purchase it. Refer to “Chapter 5 Maintenance” for further information.
(2) Initializing of user program
Since initial status of memory devices in the CPU is undefined, OK LED may blink at the first power up. In order to
initialize memory area, execute “Reset origin”in the first use.
1.2 Instruction Manuals
MICRO-EH series expansion units are available with MICRO-EHV+ series PLC as listed in page 2-4.
Besides this application manual, application manuals are available shown in Table 1.1.
Table 1.1 Related manuals to MICRO-EHV+ series PLC (1/2)
Product name
Model
Type
Application manual number
64 Points
EH-A64EDR
AC-powered, DC input×40, Relay output×24
NJI-522*(X)
Expansion unit
EH-D64EDR
DC-powered, DC input×40, Relay output×24
EH-D64EDT
DC-powered, DC input×40, Transistor output×24
EH-D64EDTPS
DC-powered, DC input×40, Transistor output×24 (short circuit protection)
28 Points
EH-A28EDR
AC-powered, DC input×16, Relay output×12
NJI-419*(X)
Expansion unit
EH-D28EDR
DC-powered, DC input×16, Relay output×12
EH-D28EDT
DC-powered, DC input×16, Transistor output×12
EH-D28EDTP
DC-powered, DC input×16, Transistor output×12
EH-D28EDTPS
DC-powered, DC input×16, Transistor output×12 (short circuit protection)
16 Points
EH-D16ED
DC-powered, DC input×16
NJI-467*(X)
Expansion unit
EH-D16ER
DC-powered, Relay output×16
EH-D16ET
DC-powered, Transistor output×16
EH-D16ETPS
DC-powered, Transistor output×16 (short circuit protection)
14 Points
EH-A14EDR
AC-powered, DC input×8, Relay output×6
NJI-350*(X)
Expansion unit
EH-D14EDR
DC-powered, DC input×8, Relay output×6
(MICRO-EH
EH-D14EDT
DC-powered, DC input×8, Transistor output×6
application manual)
EH-D14EDTP
DC-powered, DC input×8, Transistor output×6
EH-D14EDTPS
DC-powered, DC input×8, Transistor output×6 (short circuit protection)
8 Points
EH-D8ED
DC-powered, DC input×8
NJI-467*(X)
Expansion unit
EH-D8ER
DC-powered, Relay output×8
EH-D8ET
DC-powered, Transistor output×8
EH-D8ETPS
DC-powered, Transistor output×8 (short circuit protection)
EH-D8EDR
DC-powered, DC input×4, Relay output×4
EH-D8EDT
DC-powered, DC input×4, Transistor output×4
EH-D8EDTPS
DC-powered, DC input×4, Transistor output×4 (short circuit protection)

Chapter 1 Introduction
1 –2
Table 1.2 Related manuals to MICRO-EHV+ series PLC (2/2)
Product name
Model
Type
Application manual number
Analog
EH-A6EAN
AC-powered, Analog input×4, Analog output×2
NJI-424*(X)
Expansion unit
EH-D6EAN
DC-powered, Analog input×4, Analog output×2
RTD
EH-A6ERTD
AC-powered, RTD input×4, Analog output×2
NJI-453*(X)
Expansion unit
EH-D6ERTD
DC-powered, RTD input×4, Analog output×2
EH-A4ERTD
AC-powered, RTD input×4
EH-D4ERTD
DC-powered, RTD input×4
Thermocouple
EH-D6ETC
DC-powered, Thermocouple input×4, Analog output×2
NJI-515*(X)
Expansion unit
EH-D4ETC
DC-powered, Thermocouple input×4
* The last alphabet of the manual No. stands for version starting from blank, A, B, C...
1.3 System overview
MICRO-EHV+ series PLC is all-in-one type programmable controller shown in Figure 1.1.
1] Basic Unit
2] Expansion Unit
2] Expansion Unit
2] Expansion Unit
2] Expansion Unit
3] Expansion cable
3] Expansion cable
3] Expansion cable
3] Expansion cable
Figure 1.1 MICRO-EHV+ series PLC System configuration diagram
No.
Device name
Description of function
1]
Basic Unit
Reads input signals, executes user application program and writes output signals.
2]
Expansion Unit
Unit of external I / O Expansion
3]
Expansion cable
0.1m, 0.5m and 1m cable are available. The maximum cable length 2m in total.
EHV-CODESYS / HX-CODESYS
EHV-CODESYS and HX-CODESYS are IEC61131-3 compliant programming software for MICRO-EHV+ series
PLC. “CODESYS”is a Trademark of the company 3S-Smart Software Solutions GmbH. “EHV-CODESYS”and
“HX-CODESYS” are same tool as “CODESYS”however, Hitachi specific device description files and libraries are
preinstalled.
From application manual revision B, it is assumed to be used HX-CODESYS on descriptions which relate to
programming software.

2 –1
Chapter 2 Specifications
2.1 General specifications
Table 2.1 General specifications
Items
Specifications
Power supply
AC-powered
DC-powered
Rated input voltage
100/110/120 V AC (50/60Hz)
200/220/240 V AC (50/60Hz)
24 V DC
Input voltage range
85 to 264 V AC wide range
19.2 to 30 V DC
Permissible instantaneous power
failure
85 to 100 V AC: less than 10ms
100 to 264 V AC: less than 20ms
19.2 to 30 V DC: less than 10ms
Operational temperature
0 to 55 C
Storage temperature
-10 to 75 C
Operational humidity
5 to 95 % RH (no condensation)
Storage humidity
5 to 95 % RH (no condensation)
Pollution degree
Pollution degree 2 (IEC 61131-2)
Altitude / Atmospheric pressure
UP to 2000 m (min. 70kPa during transportation)
Vibration resistance
Conforms to IEC 60068-2-6
Impact resistance
Peak acceleration: 147m/s2, Duration: 11ms, Direction: 3, repeat each impact 3times
Noise resistance
○Noise voltage 1,500 Vpp, Noise pulse width 100 ns, 1μs (Noise input by a noise
simulator across input terminals of a power module according to measuring method of
Hitachi-IES.)
○Static noise 3,000 V at electrode part
Certifications
CE, RCM
Insulation resistance
20 MΩ minimum between AC terminal and frame ground (FE) terminal
(based on 500 V DC megger)
Dielectric withstand voltage
1,500V AC for 1 minute between AC input terminal and frame ground (FE) terminal
Ground
Class D grounding (grounding with the power supply module)
Usage environment
No corrosive gases, no excessive dust
Structure
Open wall-mount type
Cooling
Natural air cooling

Chapter 2 Specifications
2 –2
2.2 Performance specifications
Table 2.2 Performance specifications
Item
Specification
MV-*20** / MV-*40** / MV-*64**
User program memory
1MB (*1)
Source file memory
1MB
Data memory (non retain)
640KB
Data memory (retain)
256KB (incl. 64KB persistent variables)
No. of expansion unit
4
No. of I/O (using 64 points unit)
320 (input: 200, output: 120)
Special I/O
Counter input
Single phase: 100kHz×5ch. (32bit)
2-phase: 60kHz×2ch. (32bit)
Interrupt input
5 ch.
Pulse / PWM output
65kHz×3ch.
Programming language
IEC61131-3 compliant 5 languages
LD: Ladder Logic Diagram
FBD: Function Block Diagram (incl. CFC : Continuous Function Chart)
SFC: Sequential Function Chart
IL: Instruction List
ST: Structured Text
I/O updating cycle
Refresh processing
Communication
Protocol
CODESYS V3 protocol
USB
USB 2.0 Full speed (Gateway (*2))
Ethernet
10BASE-T/100BASE-TX (Gateway (*2), EtherCAT master (*3), Modbus-TCP master (*3) /slave)
Serial
RS-232C (Modbus-RTU master/slave, General purpose)
Option serial
RS-422/485 (Modbus-RTU master/slave, General purpose)
Switch,
Indications
Indications
POW LED, RUN LED, OK LED, STATUS LED
RUN switch
STOP / RUN (Remote STOP/RUN enabled when the switch position is RUN.)
Calendar / Clock
Support (Built-in RTC)
USB memory port
Support (Program transfer, Data logging, Web visualization)
Battery
MV-BAT (for retentive data and Real time clock)
Maintenance function
Diagnosis (micro processor error, watch dog timer error, memory error, battery error, etc.)
*1 Since a boot project contains about 23KB of service information besides program, available memory size for user program is
about 1000KB instead of 1024KB (1MB).
*2 Gateway: Communication with EHV-CODESYS / HX-CODESYS
*3 ErherCAT master and Modbus-TCP master are supported by CPU ROM VER. 3.5.3.42 or newer version.
Table 2.3 Processing speed
Data type (number of bit)
Command
Processing time [μs / IL]
BOOL (1)
OR
0.54
BOOL (1)
AND
0.54
INT (16)
ADD
0.54
INT (16)
MUL
0.54
DINT (32)
ADD
0.68
DINT (32)
MUL
0.68
REAL (32)
ADD
0.71
REAL (32)
MUL
0.71
LREAL (64)
ADD
6.38
LREAL (64)
MUL
6.33

Chapter 2 Specifications
2 –3
2.3 EtherCAT master specifications
Table 2.4 EtherCAT master specifications
Items
Specifications
Communication protocol
EtherCAT protocol
Supported services
CoE (process data communications and SDO communications)
Synchronization
None (DC is not supported)
Physical layer
100BASE-TX
Modulation
Baseband
Baud rate
100M bits/s (100BASE-TX)
Duplex mode
Full / Auto
Topology
Daisy chain, branch wiring
Transmission media
Category 5 Shielded twisted-pair cable or higher
Transmission distance
Distance between nodes : 100m or less (IEEE802.3)
Maximum number of slaves
255
Maximum process data size
Input 5,736 bytes, Output 5,736 bytes
Maximum data sizes per slave
Input 1,434 bytes, Output 1,434 bytes
Maximum message size
2,048 bytes
Minimum communications cycle
10 ms
Sync jitter between slaves
1 s
Process data communications
PDO mapping using CoE
Fail-soft operation for slave communications errors
Stop operation for slave communications errors
SDO communications
CoE
- Emergency message server (receptions from slaves)
- SDO requests and responses
Configuration
Setting node address using EHV-CODESYS / HX-CODESYS network scan
Display of network configuration information
RAS functions
Slave configuration check when starting network
Reading of error information
Trouble shooting information
Slave information
- Automatic reboot of the slaves
- Scanning slaves supported
Mailbox support
CoE (CANopen/CAN application layer over EtherCAT)
SoE (Servodrive over EtherCAT)
N o t e
Please note that using various Ethernet based communication (EtherCAT, Modbus-TCP, NVL, Gateway) at the same time will
limit the communication performance.
If connected slave devices are drives (e.g. servo drives), supported modes are profile position/velocity/torque modes only.
Cyclic synchronous position/velocity/torque modes are not supported.

Chapter 2 Specifications
2 –4
2.4 Product lineup
Table 2.5 List of system equipment
Product
Type
Specification
I/O type
64 Points
Basic unit
MV-A64DR
100/200 V AC, DC input×40, Relay output×24
MV-D64DR
24 V DC, DC input×40, Relay output×24
MV-D64DT
24 V DC, DC input×40, Transistor output (sink) ×24
MV-D64DTPS
24 V DC, DC input×40,
Transistor output (source) ×24 (20 points with short circuit protection)
40 Points
Basic unit
MV-A40DR
100/200 V AC, DC input×24, Relay output×16
MV-D40DR
24 V DC, DC input×24, Relay output×16
MV-D40DT
24 V DC, DC input×24, Transistor output (sink) ×16
MV-D40DTPS
24 V DC, DC input×24,
Transistor output (source) ×16 (12 points with short circuit protection)
20 Points
Basic unit
MV-A20DR
100/200 V AC, DC input×12, Relay output×8
MV-D20DR
24 V DC, DC input×12, Relay output×8
MV-D20DT
24 V DC, DC input×12, Transistor output (sink) ×8
MV-D20DTPS
24 V DC, DC input×12,
Transistor output (source) ×8 (4 points with short circuit protection)
64 Points
Expansion
unit
EH-A64EDR
100/200 V AC, DC input×40, Relay output×24
64 DIO
EH-D64EDR
24 V DC, DC input×40, Relay output×24
64 DIO
EH-D64EDT
24 V DC, DC input×40, Transistor output (sink) ×24
64 DIO
EH-D64EDTPS
24 V DC, DC input×40,
Transistor output (source) ×24 (20 points with short circuit protection)
64 DIO
28 Points
Expansion
unit
EH-A28EDR
100/200 V AC, DC input×16, Relay output×12
8-28 DIO
EH-D28EDR
24 V DC, DC input×16, Relay output×12
8-28 DIO
EH-D28EDT
24 V DC, DC input×16, Transistor output (sink) ×12
8-28 DIO
EH-D28EDTP
24 V DC, DC input×16, Transistor output (source) ×12
8-28 DIO
EH-D28EDTPS
24 V DC, DC input×16, Transistor output (source) ×12 (short circuit protection)
8-28 DIO
16 Points
Expansion
unit
EH-D16ED
24 V DC, DC input×16
8-28 DIO
EH-D16ER
24 V DC, Relay output×16
8-28 DIO
EH-D16ET
24 V DC, Transistor output (sink) ×16
8-28 DIO
EH-D16ETPS
24 V DC, Transistor output (source) ×16 (short circuit protection)
8-28 DIO
14 Points
Expansion
unit
EH-A14EDR
100/200 V AC, DC input×8, Relay output×6
8-28 DIO
EH-D14EDR
24 V DC, DC input×8, Relay output×6
8-28 DIO
EH-D14EDT
24 V DC, DC input×8, Transistor output (sink) ×6
8-28 DIO
EH-D14EDTP
24 V DC, DC input×8, Transistor output (source) ×6
8-28 DIO
EH-D14EDTPS
24 V DC, DC input×8, Transistor output (source) ×6 (short circuit protection)
8-28 DIO
8 Points
Expansion
unit
EH-D8ED
24 V DC, DC input×8
8-28 DIO
EH-D8ER
24 V DC, Relay output×8
8-28 DIO
EH-D8ET
24 V DC, Transistor output (sink) ×8
8-28 DIO
EH-D8ETPS
24 V DC, Transistor output (source) ×8 (short circuit protection)
8-28 DIO
EH-D8EDR
24 V DC, DC input×4, Relay output×4
8-28 DIO
EH-D8EDT
24 V DC, DC input×4, Transistor output (sink) ×4
8-28 DIO
EH-D8EDTPS
24 V DC, DC input×4, Transistor output (source) ×4 (short circuit protection)
8-28 DIO
Analog
Expansion
unit
EH-A6EAN
100/200 V AC, Analog input×4, Analog output×2
AIO
EH-D6EAN
24 V DC, Analog input×4, Analog output×2
AIO
RTD
Expansion
unit
EH-A6ERTD
100/200 V AC, RTD input×4, Analog output×2
AIO
EH-D6ERTD
24 V DC, RTD input×4, Analog output×2
AIO
EH-A4ERTD
100/200 V AC, RTD input×4
AIO
EH-D4ERTD
24 V DC, RTD input×4
AIO

Chapter 2 Specifications
2 –5
Product
Type
Specification
I/O type
Thermocouple
Expansion
unit
EH-D6ETC
24 V DC, Thermocouple input×4, Analog output×2
AIO
EH-D4ETC
24 V DC, Thermocouple input×4
AIO
Option
board
OBV-NES
RS-485 communication
OptionBoard
OBV-485A
RS-485 communication with Analog input 2 ch. (10-bit)
OptionBoard
OBV-485TAI
RS-485 communication with Analog input 2 ch. (10-bit)
OptionBoard
OBV-485TAO
RS-485 communication with Analog output 2 ch. (10-bit)
OptionBoard
OBV-AIO
Analog input 2 ch. (10-bit) , Analog output 2 ch. (10-bit)
OptionBoard
OBV-AIG
Isolated Analog input 4 ch. (14-bit)
OptionBoard OBV-AIG
OBV-AIOG
Isolated Analog input 2 ch. (14-bit), Isolated Analog output 2 ch. (12-bit)
OptionBoard OBV-AIOG
OBV-RTD
Isolated RTD input 2 or 4 ch. (-200 to 850 C)
OptionBoard OBV-RTD
Expansion
cable
EH-MCB10
Expansion cable (1m)
EH-MCB05
Expansion cable (0.5m)
EH-MCB01
Expansion cable (0.1m)
Battery
MV-BAT
Lithium battery for retentive data and RTC

Chapter 2 Specifications
2 –6
2.5 Current consumption
Table 2.6 List of current consumption
Type
weight (g)
Consumption current (A)
Remarks
100VAC
264VAC
24VDC
Steady-state
Steady-state
Steady-state
MV-A64DR
730
0.2
0.1
-
MV-D64DR
655
-
-
0.5
MV-D64DT
600
-
-
0.5
MV-D64DTPS
600
-
-
0.5
MV-A40DR
570
0.2
0.1
-
MV-D40DR
500
-
-
0.4
MV-D40DT
460
-
-
0.4
MV-D40DTPS
460
-
-
0.4
MV-A20DR
570
0.2
0.1
-
MV-D20DR
500
-
-
0.4
MV-D20DT
460
-
-
0.4
MV-D20DTPS
460
-
-
0.4
EH-A64EDR
720
0.4
0.2
-
EH-D64EDR
640
-
-
0.5
EH-D64EDT
640
-
-
0.4
EH-D64EDTPS
640
-
-
0.4
EH-A28EDR
600
0.2
0.06
-
EH-D28EDR
500
-
-
0.3
EH-D28EDT
500
-
-
0.2
EH-D28EDTP
500
-
-
0.2
EH-D28EDTPS
500
-
-
0.2
EH-D16ED
260
-
-
0.13
EH-D16ER
300
-
-
0.11
EH-D16ET
260
-
-
0.03
EH-D16ETPS
260
-
-
0.04
EH-A14EDR
400
-
-
0.16
EH-D14EDR
400
-
-
0.16
EH-D14EDT
300
-
-
0.16
EH-D14EDTP
300
-
-
0.16
EH-D14EDTPS
300
-
-
0.16
EH-D8ED
260
-
-
0.16
EH-D8ER
280
-
-
0.16
EH-D8ET
260
-
-
0.16
EH-D8ETPS
260
-
-
0.16
EH-D8EDR
300
-
-
0.16
EH-D8EDT
260
-
-
0.16
EH-D8EDTPS
260
-
-
0.16
EH-A6EAN
400
0.1
0.06
-
EH-D6EAN
300
-
-
0.16
EH-A6ERTD
400
0.1
0.06
-
EH-D6ERTD
300
-
-
0.16
EH-A4ERTD
400
0.1
0.06
-
EH-D4ERTD
300
-
-
0.16
EH-D6ETC
300
-
-
0.16
EH-D4ETC
300
-
-
0.16

Chapter 2 Specifications
2 –7
2.6 Input specifications
Item
Specification
Internal circuit diagram
bit 0, 2, 4, 6, 8
Others
Input voltage
24V DC
Allowable input voltage range
0 to 30V DC
Input impedance
Approx. 2.7 kΩ
Approx. 4.7 kΩ
Input current
8 mA typical
4.8 mA typical
Operating
voltage
ON
18 VDC (min) / 4.5mA (max)
18 VDC (min) / 3.3mA (max)
OFF
5 VDC (max)/ 1.8mA (max)
5 VDC (max)/ 1.6mA (max)
Input lag
OFF → ON
0.5 to 20 ms (configurable)
ON → OFF
0.5 to 20 ms (configurable)
Number of inputs
64-point type: 40
40-point type: 24
20-point type: 12
Common
40/64-point type: 2
20-point type: 1
Polarity
None
Insulation system
Photocoupler insulation
Input display
LED indication
External
Removable type screw terminal block (M3)
■ High-speed counter specifications
Item
Single phase
2-phase
Input
Bit 0, 2, 4, 6, 8
Bit 0 and 2, Bit 4 and 6
Input voltage
ON
18 V
OFF
5 V
Count pulse width
10 μs
17 μs
Highest counting frequency
100 kHz each channels
60 kHz each channels
Count Register
32-bit
On / Off-preset
Available
Refer to page 4-5 for wiring to a rotary encoder.
■ Interrupt input specifications
Item
Specification
Input
1, 3, 5, 7, 9
Input voltage
ON
18 V
OFF
5 V
Internal circuit
0
1
C

Chapter 2 Specifications
2 –8
2.7 Output specifications
(1) Relay output (All output on MV-*64DR, MV-*40DR, MV-*20DR)
Item
Specifications
Internal circuit diagram
Rated load voltage
5 to 250V AC, 5 to 30V DC
Minimum switching current
1 mA (5V DC) *1
Maximum
load current
1 circuit
2A (24V DC, 240V AC)
1 common
5A
Output response
time
OFF → ON
15 ms (max.)
ON → OFF
15 ms (max.)
Number of outputs
64-point type: 24
40-point type: 16
20-point type: 8
Common
64-point type: 9
40-point type: 5
20-point type: 2
Surge removing circuit
None
Fuse
None
Insulation system
Relay insulation
Output display
LED indication
External connection
Removable type screw terminal block (M3)
Externally supplied power
(for driving the relays)
Not required
Contact life *2
20,000,000 times (mechanical)
200,000 times (electrical: 1.5A)
Insulation
1,500V or more (external-internal)
500V or more (external-external)
*1: Minimum switching current is the unofficial value as a guide. This value may vary with the switching frequency,
environmental conditions, etc..
*2: Refer the diagram below
■ Life of relay contact
Life curve of relay contact
500
100
10
1
0.1
0.2
5
50
20
10
1
0.5
1000
0.3
3
2
30 V DC τ=7ms
250 V AC cosφ=0.4
30 V DC/250 V AC R load
Switching life (10,000 times)
Shut-off current (A)
Life of the contact is also in squared reverse proportion to the
current, so be aware that interrupting rush current or directly driving
the capacitor load will drastically reduce the life of the relay.
0
1
C
Internal circuit