molex DRL-750 Operating and maintenance manual

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™
from Molex Inc.
IP67 Industrial Ethernet Switches
Hardware Reference Guide
Document Edition: 1.1
Document #: 715-5000
Document Edition: 1.1

Hardware Reference Guide IP67 Industrial Ethernet Switches
ii

© Molex Inc.
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Date: February 8
th
, 2016
This document applies to the following Ethernet switch products: DRL-750, DRL-780,
DRL-781 and DRL-782.
Copyright ©2016 Woodhead Software & Electronics, a division of Molex
This document and its contents are the proprietary and confidential property of Molex and/or
its subsidiaries and may not be used or disclosed to others without the express prior written
consent of Molex and/or its subsidiaries.
All other trade names are trademarks or registered trademarks of their respective companies.
At Molex, we strive to ensure accuracy in our documentation. However, due to rapidly
evolving products, software or hardware changes occasionally may not be reflected in our
documents. If you notice any inaccuracies, please contact us (see Appendix C of this
document).
Written and designed at Molex, Zone d’Activité du Thuit Anger, 185 H Voie Romaine,
27370 Le Thuit Anger, France.
Hardcopies are not controlled.

IP67 Industrial Ethernet Switches Hardware Reference Guide
Preface iii
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Preface
Preface Sections:
•Purpose of this Guide
•Conventions

Hardware Reference Guide IP67 Industrial Ethernet Switches
iv Preface
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Purpose of this Guide
This manual explains how to install and maintain the IP-67 Industrial Ethernet Switches.
Conventions
This guide uses special notation to help enhance your understanding.
Special Notation
The following special notations are used throughout this guide:
Warning
Warning messages alert the reader to situations where personal injury
may result. Warnings are accompanied by the symbol shown, and
precede the topic to which they refer.
Caution
Caution messages alert the reader to situations where equipment damage
may result. Cautions are accompanied by the symbol shown, and
precede the topic to which they refer.
Note
A note provides additional information, emphasizes a point, or gives a
tip for easier operation. Notes are accompanied by the symbol shown,
and follow the text to which they refer.

Preface v
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
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Contents
Preface .......................................................................................................................... iii
Purpose of this Guide..............................................................................................................iv
Conventions............................................................................................................................iv
1.General Information ................................................................................................... 7
Overview .................................................................................................................................8
Part Numbering........................................................................................................................8
Operation.................................................................................................................................9
Performance Specifications......................................................................................................9
2.LED Indicators .......................................................................................................... 10
Overview ...............................................................................................................................11
Power LEDs ..........................................................................................................................12
ACT/LNK LEDs....................................................................................................................13
10/100 LEDs..........................................................................................................................13
3.Installation ................................................................................................................ 14
Overview ...............................................................................................................................15
Procedure...............................................................................................................................15
Typical Cabling .....................................................................................................................16
4.Power Wiring ............................................................................................................ 17
Overview ...............................................................................................................................18
Power-supply Redundancy.....................................................................................................20
Daisy-Chaining Module’s Power-supply................................................................................20
5.Communication Ports Wiring.................................................................................. 21
Overview ...............................................................................................................................22
M12 Ethernet Wiring .............................................................................................................22
Ethernet Connector Pinout .....................................................................................................23
Ethernet Cable Length ...........................................................................................................23
Duplex Operation...................................................................................................................23
Verifying Connectivity ..........................................................................................................23
6.Switch Features........................................................................................................ 24
Switch Features......................................................................................................................25
7.Technical Specifications ......................................................................................... 28
Technical Specifications ........................................................................................................29

Hardware Reference Guide IP67 Industrial Ethernet Switches
vi Preface
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
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Dimensions............................................................................................................................31
Cable Flow...………………………………………………………………………………… 34
8.Cabling Guidelines................................................................................................... 35
Overview ...............................................................................................................................36
Cable Categories....................................................................................................................36
Cable Routing........................................................................................................................37
Bonding and Grounding.........................................................................................................37
Data Cable Shielding .............................................................................................................38
Conforming to IP67 ...............................................................................................................38
Planning your installation ......................................................................................................38
A.Standards and Safety .............................................................................................. 39
CE Statement .........................................................................................................................40
General Warnings ..................................................................................................................40
B.Warranty and Support ............................................................................................. 41
Statement of Limited Warranty ..............................................................................................42
Technical Support..................................................................................................................43
Getting Help ..........................................................................................................................45

IP67 Industrial Ethernet Switches Hardware Reference Guide
General Information 7
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
1
General Information
Chapter Sections:
•Overview
•Part Numbering
•Operation
•Performance Specifications

Hardware Reference Guide IP67 Industrial Ethernet Switches
8 General Information
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Overview
This manual will help you install and maintain the IP-67 Industrial Ethernet Switches. These
switches are designed to interconnect Ethernet nodes in a harsh environment and increase
network performance.
Part Numbering
Part Number Device
DRL-750 IP67 Fast Ethernet Unmanaged Switch
Network : 5 ports M12
Power : 5 pins M12 (redundant 9 to 36 VDC)
DRL-780 IP67 Fast Ethernet Unmanaged Switch
Network : 8 ports M12
Power : 5 pins Mini-Change Power in / Power out connectors (redundant 9 to 36 VDC)
DRL-781 IP67 Fast Ethernet Unmanaged Switch
Network : 8 ports M12
Power : 4 pins Mini-Change Power in / Power out connectors (redundant 9 to 36 VDC)
DRL-782 IP67 Fast Ethernet Unmanaged Switch
Network : 8 ports M12
Power : 5 pins M12 Power in / Power out connectors (redundant 9 to 36 VDC)

IP67 Industrial Ethernet Switches Hardware Reference Guide
General Information 9
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Operation
Unlike an Ethernet hub, which broadcasts all messages received out all ports, the DRL-7xx
series route Ethernet messages to the appropriate port. In other words, it prepares the network
for optimal bandwidth conditions, reduces the number of collisions.
The DRL-7xx series supports 10BaseT (10 Mbps) or 100BaseT (100 Mbps) on the M-12
ports. Each port, independent of the others, will auto-negotiate the speed and duplex mode.
This allows both 10 Mbps (full or half duplex) and 100Mbps (full or half duplex) devices to
be connected to the same DRL-7xx series Switch.
Performance Specifications
The performance specifications are as follows. For complete technical specifications,
including switch dimensions, refer to Appendix A.
Table 1: Performance Specifications
Ethernet Switch Type Unmanaged
Ports 10BaseT/100BaseTx M12
Required Voltage 9-36VDC (See Appendix A for power consumption for each model)
Ethernet Standards IEEE 802.3 (10BaseT), 802.3u (100BaseTX), 802.3x (Full Duplex)
Ethernet Protocols All standard IEEE 802.3 protocols supported
Speed Per Port 10 Mbps/100Mbps
Ethernet Isolation 1500 Volts RMS (for 1 minute)
Operating Temperature -40 to 80°C
Humidity 5 to 95% (non-condensing)

Hardware Reference Guide IP67 Industrial Ethernet Switches
10 LED Indicators
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
2
LED Indicators
Chapter Sections:
•Overview
•Power LEDs
•ACT / LNK LEDs
•10 / 100 LEDs

IP67 Industrial Ethernet Switches Hardware Reference Guide
LEDs Indicators 11
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Overview
The DRL-7xx series have communication LEDs for each port and power LEDs. Refer to the
sample pictures below for LED locations.
Figure 1 - LEDs on DRL-78x Figure 2 - LEDs on DRL-750
Power LEDs
PWR1/PWR2
Each Port has its own
Activity and Speed LEDs
Power LEDs
PWR1/PWR2
Each Port has its own
Activity and Speed LEDs

Hardware Reference Guide IP67 Industrial Ethernet Switches
12 LED Indicators
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
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Power LEDs
The Power LEDs indicate the switch is correctly powered.
LED State Meaning
Off Device is powered Off
Green Power is connected correctly
DRL-780 / DRL-781 / DRL-782
There are two Power LEDs on the DRL-78x Switches. PWR1 is used for primary power, and
PWR2 is used for secondary power. Both indicate if power is being applied to the respective
terminal.
Note
The DRL-780/DRL-781/DRL-782 operates while either (or both)
PWR1/PWR2 LED lit.
In power redundancy mode, both PWR1 and PWR2 will be lit.
DRL-750
The DRL-750 has only one Power LED. The LED will be lit if power is applied to one or
both of the +24VDC terminals.

IP67 Industrial Ethernet Switches Hardware Reference Guide
LEDs Indicators 13
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
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ACT/LNK LEDs
The Ethernet activity (ACT) is reported through one LED. There is one of these LEDs per
M12 port.
LED State Meaning
Off There is no activity on this port
Flashing Green Communication activity detected.
10/100 LEDs
These LEDs indicate the communication speed detected on the port. There is one of these
LEDs per M12 port.
LED State Meaning
Off There is no proper Ethernet connection (link)
between the port and another Ethernet device.
Make sure the cabling is correct and that all cables
are plugged securely into the ports, at both ends.
For Ethernet wiring directions, refer to Section 5.
Yellow A 10 Mbps (10BaseT) connection is detected.
Green A 100 Mbps (100BaseTx) connection is detected.

Hardware Reference Guide IP67 Industrial Ethernet Switches
14 Installation
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
3
Installation
Chapter Contents:
•Overview
•Procedure
•Dimensions
•Cables flow

IP67 Industrial Ethernet Switches Hardware Reference Guide
Installation 15
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Overview
The IP67 Switches should be screwed directly to a flat panel or on a machine frame. Refer to
the pictures below.
Note
Mounting the Switch to a surface that is not flat can cause the circuit
board inside the device to be flexed, possibly damaging it.
Note
Allow for enough room to route the Ethernet cables.
Warning
Install the IP67 Industrial Ethernet Switch in accordance with local and
national electrical codes.
Procedure
 Connect Protective Earth to the Ground Nut.
 Connect Ethernet ports.
 Connect the Power Supply to the power terminals. This will start the switch operation.

Hardware Reference Guide IP67 Industrial Ethernet Switches
16 Installation
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Typical Cabling
Figure 3 - Typical Switch Cabling
(*)
See P/N references in IP67 HarshIO product catalog
From Power Supply To downstream powered equipments
Ethernet connection
To other Ethernet
Equipments
DRL-780/781 IP67
Ethernet Switch
TCDxx-yyy(*) IP67
Ethernet I/O Block
Device
Protection Earth

IP67 Industrial Ethernet Switches Hardware Reference Guide
Power Wiring 17
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
4
Power Wiring
Chapter Contents:
•Overview
•Power Supply Redundancy
•Daisy-Chaining Module’s Power-supply

Hardware Reference Guide IP67 Industrial Ethernet Switches
18 Power Wiring
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Overview
IP67 Switches can be powered from the same DC source that is used to power your I/O
devices. 9 to 36 VDC needs to be applied across the +24VDC1 and Common (0v) terminals.
The third terminal (PE) should be tied to panel or chassis ground, first making sure the
possible grounding point is free of electrical noise.
To reduce downtime resulting from power loss, the switch can be powered redundantly by
connecting a second power supply to the +24VDC2 terminal and the Common terminal (0v).
Pin Signal
1 0V
1
2 0V
1
3 PE
2
4 +24VDC1
5 +24VDC2
Shell PE
2
Mini-change 5-pins power input, male
connector
Mini-change 5-pins power output, female
connector
Figure 4 - 5 Pins Mini-Change Power Connector Pinout
1
Both 0V terminals are connected internally
2
Both PE terminals are connected internally

IP67 Industrial Ethernet Switches Hardware Reference Guide
Power Wiring 19
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Pin Signal
1 0V
1
2 0V
1
3 +24VDC1
4 +24VDC2
Shell PE
Mini-change 4-pins power input, male
connector
Mini-change 4-pins power output, female
connector
Figure 5 - 4 Pins Mini-Change Power connector Pinout
Pin Signal
1 +24VDC1
2 +24VDC2
3 0V
1
4 0V
1
5 PE
2
Shell PE
2
M12 A-Coded 5-pins power male
connector
Figure 6 - 5 Pins M12 Power connector Pinout
Note
Connecting the power supply will start device operation.
1
Both 0V terminals are connected internally
2
Both PE terminals are connected internally

Hardware Reference Guide IP67 Industrial Ethernet Switches
20 Power Wiring
© Woodhead Software & Electronics, a division of Molex
Document Edition: 1.1, Document # 715-5000
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
Warning
Equipment should be installed in accordance with local and national
country wiring codes.
Power-supply Redundancy
IP67 switches can operate from either +24VDC1 or +24VDC2. When using power supply
redundancy, two different power supplies shall be used. If one of these power supplies would
fail, the DRL-7xx Industrial Switch will continue to operate transparently.
Daisy-Chaining Module’s Power-supply
The DRL-78x has 2 power ports to allow daisy chaining power from one device to another.
This feature could be used to power additional I/O blocks or switches without power tees or
taps.
Warning
While daisy-chaining power between modules, the total current (amps)
needs to be calculated for the whole chain and that value must not exceed
8 A (DRL-780, DRL-781) or 4 A (DRL-782) per power-supply pin, either
+24VDC or 0V terminal. The power requirements of the DRL-78x also need
to be considered in power budgeting (refers to Fig. 10).