Eaton Crouse-hinds series User manual

9661-ETW
MTL intrinsically safe ethernet to serial
4 port communication module
June 2017
INM 9661-ETW Rev 1
Instruction manual
MTL industrial ethernet

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INM 9661-ETW Rev 1
DECLARATION OF CONFORMITY
A printed version of the Declaration of Conformity has been provided separately within the
original shipment of goods. However, you can find a copy of the latest version at -
http://www.mtl-inst.com/certificates

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INM 9661-ETW Rev 1
CONTENTS
1 INTRODUCTION............................................................1
2 FEATURES ................................................................1
3 CONNECTIONS ............................................................2
3.1 Data ...................................................................................2
3.2 Power..................................................................................2
4 INSTALLATION ............................................................3
4.1 Special Conditions for Safe Use (Conditions of Certification) ..................................3-4
5 CONNECTING THE 9661-ETW TO A PC/NETWORK ..............................5
5.1 Connecting with LAN .....................................................................5
6 CONFIGURING WI-FI NETWORK SETTINGS .................................. 6-7
7 SETTING UP THE 9661-ETW COMMS PORTS ................................. 8-9
7.1 LED Indication...........................................................................9
8 MECHANICAL DETAILS ....................................................10
9 ENVIRONMENTAL.........................................................10
10 WASTE REMOVAL INFORMATION ...........................................10
11 CONFORMITY ............................................................10
12 MAINTENANCE ...........................................................10
13 CERTIFICATION ...........................................................11
13.1 Marking details .........................................................................11
14 ORDERING INFORMATION..................................................11

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INM 9661-ETW Rev 1

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INM 9661-ETW Rev 1
1 INTRODUCTION
The 9661-ETW is an Intrinsically Safe (IS) Ethernet to Serial 4 Port Communication Module
suitable for Zone 0 mounting with a suitable Ex ia Power Supply.
The Module allows existing Intrinsically Safe equipment with an RS485/RS422 or RS232/TTL
port to become Ethernet Enabled via either Wi-Fi (WLAN) or a Cat5/6 cable connection into an IS
Ethernet Network (LAN). The unit has 4 serial ports, each one supporting either RS485/RS422 or
RS232/TTL depending upon the configuration required. There are 2 RJ45 (LAN) ports that support
10/100 IS Ethernet connections - these allow ‘daisy-chaining’ of units together.
Power (12V DC) is supplied to the module either locally or using Power over Ethernet (PoEx) from
the LAN port - This requires the PoEx output to be wired to the Supply Input terminals by the
user.
The compact and cost effective design makes it the ideal choice for many applications
such as Petrochemical - Process Monitoring, Legacy Systems and Mining - Underground
Communication Links, Machine Monitoring and Legacy Systems.
Electrical connections are made via cage-clamp plug/socket terminals along with a dual RJ45 type
connector for the Ethernet LAN ports. Twin SMA Style RF connectors allow one or two antenna
to be connected as required.
2 FEATURES
• Intrinsically Safe ATEX / IECEx certification
• 4 Communication Ports - RS232/485/422 (2 & 4 Wire)
• Serial Modbus Protocol
• Bluetooth Dual Mode V2.1 +EDR and V4.0 (Future development option)
• Wi-Fi supporting 802.11 a/b/g/n standards (2.4 & 5 GHz)
• Micro Access Point (Future development option)
• Dual Port Switch 10/100Mb LAN (daisy-chain capability)
• LAN or Wi-Fi to Serial comms
• Wi-Fi, Bluetooth & LAN co-existence
• Modbus/TCP <-> Modbus/RTU (or ASCII) Protocol
• Compact design
• Certified for a variety of applications including Mining
• Zone 0 mounting
• Connection into Zone 0 Gas or Zone 20 Dust Hazardous Areas
9661-ETW MTL Intrinsically Safe Ethernet to
serial 4 port communication module

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INM 9661-ETW Rev 1
3 CONNECTIONS
3.1 Data
Comms Ports 1 + 2
Pin Function Pin Function
Port 1
1 Port1 - TX+/A 2 Port1 - TX-/B
3 Port1 - RX+ 4 Port1 - RX-
5 Port1 - TXD (RS232) 6 0V
7 Port1 - RXD (RS232) 8 0V
Port 2
9 Port2 - TX+/A 10 Port2 - TX-/B
11 Port2 - RX+ 12 Port2 - RX-
13 Port2 - TXD (RS232) 14 0V
15 Port2 - RXD (RS232) 16 0V
Comms Ports 3 + 4
Pin Function Pin Function
Port 3
1 Port3 - TX+/A 2 Port3 - TX-/B
3 Port3 - RX+ 4 Port3 - RX-
5 Port3 - TXD (RS232) 6 0V
7 Port3 - RXD (RS232) 8 0V
Port 4
9 Port4 - TX+/A 10 Port4 - TX-/B
11 Port4 - RX+ 12 Port4 - RX-
13 Port4 - TXD (RS232) 14 0V
15 Port4 - RXD (RS232) 16 0V
LAN Port 1 LAN Port 2
Pin Function Pin Function
1 Tx + 1 Tx +
2 Tx - 2 Tx -
3 Rx + 3 Rx +
4 Spare 4 PoEx + 12V*
5 Spare 5 PoEx + 12V*
6 Rx - 6 Rx -
7 Spare 7 PoEx 0V*
8 Spare 8 PoEx 0V*
WiFi Antenna Connectors (SMA)
SMA
Coonector
Antenna
Front Main (2.4 + 5GHz)
Rear MIMO (2.4GHz)
3.2 Power
Pin Function
1 PoEx + 12V
2 NC
3 PoEx 0V
4 Power +12V
5 NC
6 Power 0V
*PoEx (Pins 1+3) must be linked back into the Power connections (Pins 4+6) if used.

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INM 9661-ETW Rev 1
4 INSTALLATION
This Equipment must be installed, operated and maintained only by trained
competent personnel and in accordance with all appropriate international, national
and local standard codes of practice and site regulation for intrinsically safe apparatus
and in accordance with the instructions contained here.
The 9600-ET Ethernet I/O module range is designed in accordance with general
electrical safety standards e.g. IEC 60950 or similar.
The equipment should not be used in the vicinity of chemicals which are known to
damage plastics unless protected by an additional suitable enclosure
The connected power supply must be Intrinsically Safe, having a Uo=14.4V or less
and suitable for the intended gas or dust group.
The nominal power requirements are 12V @ 150mA.
• Example wiring information for typical field devices is shown in the
following diagram (also reproduced on the units side label)

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INM 9661-ETW Rev 1
4.1 Special conditions for safe use (Conditions of certification)
The following conditions relate to safe installation and/or use of the equipment, this
is an extract from the certificate CML 16ATEX2131X.
14.1 When used with Group I gases and Group III dust, the modules shall each
be mounted within an enclosure providing a degree of protection of at
least IP54. This shall be in accordance with EN 60529, and the mounting
arrangement shall not impair the existing creepage and clearance
distances. The enclosure shall also comply with the appropriate
requirements of Clauses 7 and 8 of EN 60079-0.
14.2 The RJ45 connectors do not meet the ingress protection rating of IP20,
when they are not fitted with either a connector or blanking plug. For
Group II, the RJ45 connectors must be fitted with either a plug or
blanking plug or the module shall be mounted in an enclosure
meeting IP20
14.3 When used in Group II, under certain extreme circumstances, the non-
metallic parts incorporated in the enclosure of this equipment may
generate an ignition-capable level of electrostatic charge. Therefore,
the equipment shall not be installed in a location where the external
conditions are conducive to the build-up of electrostatic charge on such
surfaces. In addition, the equipment shall only be cleaned with a damp cloth.
14.4 The supply to the modules must be derived from a suitably certified,
intrinsically safe supply having a Uo=14.4V or less and suitable for the
intended gas or dust group.
14.5 In the case of any connection to the RS232/TTL circuits, if the transmit
‘TX’ line within both the cable and the other certified equipment can be
shown to be suitably segregated from the receive line, ‘RX’, then Ui can
be specified as 12.5 V. If the segregation cannot be proved, then Ui for
both TX and RX must be specified as 5.88 V (Note: Suitable segregation
for upto 30V as specified in Table 5 EN 60079-11 is a minimum of 2mm
creepage and clearance, 0.7mm through casting compound or under
coating, or 0.5mm solid insulation with CTI >=100).
14.6 The values of Co and Lo shall apply when one of the two conditions
below is given:
- The total Li of the external circuit (excluding the cable) is < 1% of the
Lo value, or,
- The total Ci of the external circuit (excluding the cable) is < 1% of
the Co value. The above parameters are reduced to 50% when both
of the two conditions below are given:
- The total Li of the external circuit (excluding the cable) > 1% of the
Lo, and
- The total Ci of the external circuit (excluding the cable) > 1% of the Co.
NOTE
The reduced capacitance of the external circuit (including cable) shall not be
greater than 1 µF for IIB and 600 nF for IIC.
14.7 The equipment shall be capable of withstanding an electric strength
test using a test voltage of 500 Vac applied between the circuit and earth
for 60 s. Alternatively, a voltage of 20% higher may be applied for 1 s.
There shall be no evidence of flashover or breakdown and the maximum
current flowing shall not exceed 5 mA.

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INM 9661-ETW Rev 1
5 CONNECTING THE 9661-ETW TO A PC/NETWORK
5.1 Connecting with LAN
• Ensure that the 9661-ETW unit is powered by a suitable IS supply, such as
the MTL 9492-PS. PoEx can be used to power the unit via LAN port 2
if required.
• The 9661-ETW should then be connected to an IS Ethernet Network/PC
using a suitable CAT5/6 cable. Either LAN Port 1 or 2 can be used. The other
LAN port can be used for daisy chaining units together. PoEx only available
on port 2.
• Run the 9461-ET Finder.exe program which can be found on the MTL
website, this will automatically search for and locate any 9661-ETW units
connected to the network.
• Click on the device that you are looking to configure, then click the
“configure IP settings” button and this will bring up the following screen.
• Manually type in the settings that you require and then enter the password
“CSL”. Click the apply button to send the settings to the 9661-ETW.
• Reboot the device by either powering down or by clicking the “reboot” button
in the above screen.
• Once the 9661-ETW is up and running, navigate to the IP Address that has
been programmed into the unit using a web browser and you will see the
following screen.

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INM 9661-ETW Rev 1
• This page shows the current configuration of the 4 Comms ports.
6 CONFIGURING WI-FI NETWORK SETTINGS
• Click on the Wi-Fi Information menu option and you will see the screen below
This shows information about the Wi-Fi module and the current settings associated
with it, including whether there is an active Wi-Fi connection.
To change any of the settings this is done in the following step
• Click on the Wi-Fi Configuration menu option, this prompts the user to
enter a username and password. The defaults are shown below, both are
case sensitive –
Username: admin
Password: Pa55w0rd
You will then see the following screen