Mitsubishi NZ2EHG-T8 User manual

10/100/1000M
Industrial Switching HUB
NZ2EHG-T8
User’s Manual
MODEL NZ2EHG-T8-U
MODEL
CODE 13J246
IB(NA)-0800460-C(1007)MEE
©2010 MITSUBISHI ELECTRIC CORPORATION
Powered by CONTEC
This product was jointly developed and manufactured by Mitsubishi and
CONTEC.
Note that some of the warranty on this product differs from that on other
products (MELSEC-Q or MELSEC-L series).
(Refer to "Terms of Warranty”.)

1
Precautions regarding Warranty and Specifications
This product was jointly developed and manufactured by Mitsubishi and CONTEC.
Note that there are some precautions regarding warranty and specifications of the product.
<Warranty>
- The gratis warranty term of the product shall be for one (1) year after the date of delivery or for eighteen (18)
months after manufacturing, whichever is less.
- The onerous repair term after discontinuation of production shall be for six (6) years.
- Mitsubishi shall mainly replace products that need repair.
- It may take some time to respond to the problem or repair the product depending on the condition and timing.
<Specifications>
- General specifications are different.
NZ2EHG-T8 MELSEC-Q Series
Operating ambient temperature 0 to 50°C0 to 55°C
Operating ambient humidity 10 to 90%RH 5 to 95%RH
Storage ambient temperature -10 to 60°C-25 to 75°C
Storage ambient humidity 10 to 90%RH 5 to 95%RH
- EMC standards that are applicable to the products differ.
NZ2EHG-T8 MELSEC-Q Series
EMC standards EN55022, EN55024,
EN61000-6-2 EN61131-2

2
Safety Precautions
Review the following definitions and precautions to use the product safely.
Safety Information
This document provides safety information using the following symbols to prevent accidents resulting in
injury or death and the destruction of equipment and resources. Review the meanings of these labels to
operate the equipment safely.
WA RN I N G WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTI ON CAUTION indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury or in property damage.
Handling Precautions
WA RN I N G
- Do not use the product where it is exposed to flammable or corrosive gas. Failure to do so may result in an
explosion, fire, electric shock, or failure.
- The product could be very hot in the operation. Please do not touch with hands or body. It may cause burns.
- To avoid electric shock, please do not touch the system with a wet hand.
CAUTI ON
- The link speed value (e.g., 1000Mbps) of the transmission rate used in this manual is the theoretical maximum value of
the wired LAN standard and does not indicate the actual data transmission speed.
- Frame loss could occur depending on the connection destination or installed environment.
- When attempt is made to perform communication for devices that are not Jumbo Frame compatible, communication
efficiency may drop extremely. There are also cases where communication is disconnected.
- As this product contains precision electronic components, do not use or store it in a place subject to shock or
vibration. Doing so may cause malfunction, heat generation, fault, or damage.
- Ground the FG terminal to a protective ground conductor.
- Place the cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be pulled, resulting in
damage to the module or cables or malfunction due to poor contact.
- When disconnecting the communication cable or power cable from the module, do not pull the cable by the cable
part.
- Correctly connect the power cables to the HUB unit.
- Do not install control lines or communication cables together with the main circuit lines or power cables. Keep a
distance of 100mm or more between them. Failure to do so may result in malfunction due to noise.
- Prevent foreign matter such as dust or wire chips from entering the module. Such foreign matter can cause a fire,
failure, or malfunction.

3
- Do not use or store the product in a hot or cold place, or in a place that is subject to severe temperature changes. Doing
so may cause malfunction, heat generation, fault, or damage.
- Do not use or store the product in a place subject to direct sunlight or near a heating device, such as a stove. And do
not use or store the product near equipment generating a strong magnetic field or radio waves. Doing so may cause
malfunction, heat generation, fault, or damage.
- Do not use or store this product in the presence of chemicals.
- Do not use this product in extremely humid or dusty locations. It is extremely dangerous to use this product in
locations where water, other fluid, or conductive dust may enter the interior of the unit. To use this product in such
an environment, install it in a dust-proof control panel, for example.
- If you notice abnormal odor or overheating, please disconnect the power cable immediately.
- If you find a fault or other abnormality (bad smell or excessive heat), unplug the power terminal connector and then
contact the distributor.
- Do not open the product casing. Mitsubishi will disclaim any responsibility for products whose casing has been opened.
- Do not modify the product. Mitsubishi will bear no responsibility for any problems, etc., resulting from modifying the
product.
- To clean this product, gently wipe it with a soft cloth soaked with water or a neutral detergent. Do not use benzene,
paint thinner, or other volatile solvents as they can cause the coating to discolor or peel off.
- The specifications of this product are subject to change without notice because of function addition and quality
improvement.
Even when using the product continuously, read the user's manual and check the contents.
- If you move or transfer the product, make sure to provide this manual with the product.
- Regardless of the foregoing statements, Mitsubishi is not liable for any damages whatsoever (including damages for
loss of business profits) arising out of the use or inability to use this Mitsubishi product or the information contained
herein.
FCC PART15 class A Notice
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio
commu nications. Operation of this equipment in a residential area is likely to cause harmful
interference at his own expense.
NOTE
Change or modifications not expressly approved the manufacturer can void the user's authority to
operate this equipment.
WARN IN G TO U S E R

4
CONDITIONS OF USE FOR THE PRODUCT
(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any
major or serious accident; and
ii) where the backup and fail-safe function are systematically or automatically provided outside of
the PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general
industries.
MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT
LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT,
WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS
OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED
OR USED IN APPLICATION NOT INTENDED OR EXCLUDED BY INSTRUCTIONS,
PRECAUTIONS, OR WARNING CONTAINED IN MITSUBISHI'S USER, INSTRUCTION
AND/OR SAFETY MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the
PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
- Nuclear Power Plants and any other power plants operated by Power companies, and/or any
other cases in which the public could be affected if any problem or fault occurs in the
PRODUCT.
- Railway companies or Public service purposes, and/or any other cases in which establishment
of a special quality assurance system is required by the Purchaser or End User.
- Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as
Elevator and Escalator, Incineration and Fuel devices, Vehicles, Manned transportation,
Equipment for Recreation and Amusement, and Safety devices, handling of Nuclear or
Hazardous Materials or Chemicals, Mining and Drilling, and/or other applications where there
is a significant risk of injury to the public or property.

5
Packing List
Thank you for purchasing this Mitsubishi product. The product package contains the items listed below.
Check the contents of the product package. If you discover any damaged or missing items, contact the
distributor.
Contents
Name Pcs.
Industrial switching HUB unit (NZ2EHG-T8) 1
User’s Manual 1
Power terminal connector 1
Retention bracket 1
Mounting bracket 2
Bracket screw M3x6 5
CAUTI ON
To operate this product, a power supply (12-24VDC±5%) is required separately. For power supply, see Chapter 2,
Part Names and Settings, “Power Supply”.
- This document, in whole or in part, may not be reproduced without permission.
- This document is subject to change without notice at any time.
- While we are doing our best to ensure this document has no error, should you have any questions or
find any omissions or similar, consult the distributor.

6
Table of Contents
Packing List ......................................................................................................................................... 5
1. Before Using the Product 7
About the Unit ..................................................................................................................................... 7
Features ........................................................................................................................................ 7
Environment ................................................................................................................................. 8
Inspection ..................................................................................................................................... 8
Storage.......................................................................................................................................... 8
Disposal........................................................................................................................................ 8
2. Part Names and Settings 9
Part Names and Functions ................................................................................................................... 9
3. Setup of Hardware 11
Mounting/Removing a Unit on/from a DIN Rail ............................................................................... 11
Mounting Procedure ................................................................................................................... 11
Removing Procedure................................................................................................................... 12
Attaching mounting brackets ............................................................................................................. 14
Attachment ................................................................................................................................. 14
Attaching a retention bracket ............................................................................................................. 15
Attachment ................................................................................................................................. 15
Installation Conditions....................................................................................................................... 16
Installation Orientation ............................................................................................................... 16
Spacing between Unit and Surrounding Objects......................................................................... 18
4. Connecting to a Network 20
Network Cables ................................................................................................................................. 20
Connecting to Programmable Controllers, Personal Computers, Additional HUB Units, or Bridges 20
Connection Restrictions for 100BASE-TX Repeater HUBs ....................................................... 21
Connection Restrictions for 10BASE-T Repeater HUBs ............................................................ 21
5. System Reference 22
Specifications .................................................................................................................................... 22
External Dimensions.......................................................................................................................... 24
EMC Directive................................................................................................................................... 25

1. Before Using the Product
7
1. Before Using the Product
This chapter provides information you should know before using the product.
About the Unit
NZ2EHG-T8 is a compact-sized [39(W)×120(D)×94(H)mm] industrial switching HUB unit that is
compliant with the IEEE802.3ab (1000BASE-T)/IEEE802.3u (100BASE-TX)/IEEE802.3 (10BASE-T)
standards.
Its features include Jumbo Frame support, AutoMDI/MDI-X, auto-negotiation, and automatic power
adjusting function. The automatic power adjusting function can reduce the power consumption by up to
80%. *1
With fan less configuration, NZ2EHG-T8 is suitable for places where silence is required. In addition, the
adoption of metal casing with great radiation performance enables the unit to be used in ambient
temperatures of 0 to 50°C. A DIN rail mounting mechanism and the mounting brackets provided with the
unit enable various types of installation.
Please read this manual carefully so that you can build a system by connecting the switching HUB unit to
external devices.
Features
- Compact-sized (39 (W) × 120 (D) ×94 (H) mm) unit equipped with 8 ports capable of 1000BASE-T
The compact-sized unit enclosure (39 (W) ×120 (D) ×94 (H) mm) is equipped with the 8 ports that are
compliant with IEEE802.3ab (1000BASE-T)/IEEE802.3u (100BASE-TX)/IEEE802.3 (10BASE-T).
With fan less configuration, this product is suitable for places where silence is required. In addition,
the adoption of metal casing with great radiation performance provides the operating ambient
temperature of 0 to 50°C.
- Auto MDI/MDI-X feature, auto-negotiation feature
The Auto MDI/MDI-X feature can automatically recognize the cable type, straight-through cable or
crossover cable, to prevent problems using the wrong cable type.
Also, the auto-negotiation feature can automatically recognize and choose the best communication
rate (10/100/1000Mbps) and method (half/full duplex) available.
- Automatic power adjusting function
This function can automatically adjust the power consumption of unused ports, enabling reduced
power consumption by up to 80%. *1
- Flexible installation orientation.
The unit is equipped with a 35mm DIN rail mounting mechanism as standard. Also, the mounting
brackets provided with the unit make installation in any orientation possible (floor, ceiling, etc.).
- Capable of running on a wide range of input voltages (12 to 24VDC)
The unit will function normally even if input voltage fluctuates within the acceptable range. In
addition, the power connector includes an FG terminal.
*1 The comparison result of measured values when all (eight) ports are in operation with those when all (eight) ports are unused.

1. Before Using the Product
8
Environment
Use this product in the following environment. If used under environmental conditions exceeding these
ranges, the board may overheat, malfunction, or cause a failure.
Operating temperature
0 to 50°C
Operating humidity
10 to 90%RH (No condensation)
Corrosive gases
None
Floating dust particles
Small amounts (non excessive)
Inspection
Inspect the product periodically as follows to use it safely.
Storage
When storing this product, keep it in its original packing form.
(1) Put the unit in the storage bag.
(2) Wrap it in the packing material, then put it in the box.
(3) Store the package at room temperature at a place free from direct sunlight, moisture, shock, vibration,
magnetism, and static electricity.
Disposal
When disposing of the product, follow the disposal procedures stipulated under the relevant laws and
municipal ordinances.

2. Part Names and Settings
9
2. Part Names and Settings
Part Names and Functions
Figure 2.1. Part names
Table 2.1. LED indicators
Name Status Color Display
POWER LED POWER Green OFF : Power off
ON:Poweron
LED:A 10Mbps Yellow OFF : No LINK
100Mbps Green ON : LINK
LED:B 1000Mbps Green Flashing : ACT (Data send/receive)
Table 2.2. Connectors
Name Function
Power terminal connector (included in the package): MC1,5/3-ST-3,5 (made by Phoenix
Contact Inc.)
The applicable cable is AWG28-16. (The cable length must meet the power supply
specifications.)
Secure the connector with a retention bracket. Connect the power cable to the power
terminal connector by screw connection.
The fastening torque range is 0.22 to 0.25Nm.
Power connector MC1,5/3-G-3,5 (Phoenix Contact)
Vi+
Vi-
FG
12-24VDC
Pin number Signal Description
1 Vi+ Power (12-24VDC±5%)
2 Vi- Power (GND)
3 FG Frame Grand
Power connector

2. Part Names and Settings
10
Table 2.3. 10BASE-T/100BASE-TX/1000BASE-T port
Name Function
10BASE-T/
100BASE-TX/
1000BASE-T port
Ports 1 to 8
Use these ports to connect personal computers, additional HUB units, bridges, or other
devices.
Communication rate (10/100/1000Mbps) and communication method (half/full
duplex) can be automatically recognized. Using the Auto MDI/MDI-X function, the
cable type (straight-through or crossover cable) can be automatically recognized.
Used connector JC0-0182NL (Pulse)
1
8
Pin name Signal Description
1 TRD+ (0) Data0 transmit and receive (+)
2 TRD- (0) Data0 transmit and receive (-)
3 TRD+ (1) Data1 transmit and receive (+)
4 TRD+ (2) Data2 transmit and receive (+)
5 TRD- (2) Data2 transmit and receive (-)
6 TRD- (1) Data1 transmit and receive (-)
7 TRD+ (3) Data3 transmit and receive (+)
8 TRD- (3) Data3 transmit and receive (-)
Power Supply
Use a power supply capable of establishing 11.6VDC or higher within 50ms. Power supplies that can not
meet this requirement may cause device failures or accidents.
Figure 2.2. Time required to establish certain voltage
Time (ms)
Input voltage (V)
25.2
24
12
11.6
50

3. Setup of Hardware
11
3. Setup of Hardware
Mounting/Removing a Unit on/from a DIN Rail
Mounting Procedure
(1) Hook the upper clips of a DIN rail mounting bracket to the upper groove of a DIN rail, and then push
the lower part of the unit to the DIN rail.
Figure 3.1. Mounting a unit on a DIN rail < 1 / 2 >
(2) The DIN rail mounting mechanism automatically locks so that the unit can be attached with one
simple motion.
Figure 3.2. Mounting a unit on a DIN rail < 2 / 2 >

3. Setup of Hardware
12
Removing Procedure
A phillips-head screwdriver or a flathead screwdriver is required to remove a unit from a DIN rail.
CAUTI ON
Disconnect LAN cables and power cables connected to the unit before removing from the DIN rail.
For a Phillips-head screwdriver
(1) Insert a phillips-head screwdriver (diameter: 6 to 7mm) into the latch metal fitting on the lower part
of the unit. Do not use excessive force. Doing so may damage the DIN rail mounting bracket or the
unit.
Figure 3.3. Removing a unit from a DIN rail with a phillips-head screwdriver < 1 / 3 >
(2) The latch metal fitting is pushed down and the unit is ready to be removed from the DIN rail.
Figure 3.4. Removing a unit from a DIN rail with a phillips-head screwdriver < 2 / 3 >

3. Setup of Hardware
13
(3) By lifting the unit, you can easily remove it from the DIN rail.
Figure 3.5. Removing a unit from a DIN rail with a phillips-head screwdriver < 3 / 3 >
For a flathead screwdriver
(1) Insert a flathead screwdriver (tooth width 5.5 to 7mm) into the latch metal fitting on the lower part of
the unit, and push the tip of the screwdriver down vertically.
Do not use excessive force. Doing so may damage the DIN rail mounting bracket or the unit.
Figure 3.6. Removing a unit from a DIN rail with a flathead screwdriver < 1 / 3 >
(2) The latch metal fitting is pushed down and the unit is ready to be removed from the DIN rail.
Figure 3.7. Removing a unit from a DIN rail with a flathead screwdriver < 2 / 3 >

3. Setup of Hardware
14
(3) By lifting the unit, you can easily remove it from the DIN rail.
Figure 3.8. Removing a unit from a DIN rail with a flathead screwdriver < 3 / 3 >
Attaching mounting brackets
Attachment
Remove the four screws and separate the DIN rail mounting bracket from the unit.
Figure 3.9. Separating the DIN rail mounting bracket

3. Setup of Hardware
15
Mounting brackets
Attach mounting brackets to the unit using bracket screws.
Figure 3.10. Attaching mounting brackets
Attaching a retention bracket
Attachment
(1) Plug in the power terminal connector to the power connector and attach the retention bracket using a
bracket screw.
Figure 3.11. Attaching a retention bracket

3. Setup of Hardware
16
Installation Conditions
CAUTI ON
When used in applications with high environmental temperatures, even if the unit is operated within
the temperature range specification, make sure that heat generated by the unit has an adequate
dissipation path.
Installation Orientation
When a DIN rail mounting bracket is used
Avoid installation in an unsuitable installation orientation as insufficient heat dissipation may occur.
Suitable installation
orientation
(Top)
(Bottom)
Unsuitable
installation
orientation
(Top)
(Bottom)
(Top)
(Bottom)
Figure 3.12. Installation orientation (with a DIN rail mounting bracket)

3. Setup of Hardware
17
When mounting brackets are used
Installation in any orientation is possible.
Suitable installation
orientations
(Top)
(Bottom)
(Top)
(Bottom)
Figure 3.13. Installation orientations (with mounting brackets)

3. Setup of Hardware
18
Spacing between Unit and Surrounding Objects
CAUTI ON
Do not install the unit in a sealed housing.
When installed using a DIN rail mounting bracket
Ensure the distance between the unit and any surrounding objects as follows:
Above and below the unit: 50mm or more
Sides of the unit: 50mm or more (At least 5.8mm on the rating plate side).
Figure 3.14. Spacing between the unit and any surrounding objects when installed using a
DIN rail mounting bracket

3. Setup of Hardware
19
When installed using mounting brackets
Ensure the distance between the unit and any surrounding objects as follows:
Above and below the unit: 50mm or more
Under the rating plate side of the unit: 5.8mm or more
On each side of the unit: 50mm or more
Figure 3.15. Spacing between the unit and any surrounding objects when installed using mounting
brackets