Black Box LGH1004A User manual

BLACK BOX®
Quick Installation Guide
• LGH1000 Series Switches operate in harsh environments.
• Two power inputs connect simultaneously to live DC power sources.
• Alarm alerts you when power fails or a port disconnects.
Hardened Ethernet Switch, (4) 10/100/1000 Mbps, (1) GE SFP
LGH1004A
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information

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LGH1004A Hardened Ethernet Switch Quick Installation Guide
What’s Included
Your package includes one Hardened Ethernet Switch. It has (4) 10-/100-/1000-Mbps twisted-pair ports and (1) 1000-Mbps
Gigabit SFP slot.
This user manual/installation guide can be downloaded from the Black Box Web site, or the FTP site.
To download from the Web site:
1. Go to www.blackbox.com
2. Enter the LGH1004A in the search box:
3. Click on the “Resources” tab on the product page, and select the document you wish to download.
To download from the FTP site:
1. Go to ftp.blackbox.com
2. Open the “Manuals” folder (if using IE, open the “Anonymous” folder first).
3. Open the “L” folder, then search for LGH1004A.

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LGH1004A Hardened Ethernet Switch Quick Installation Guide
Installation
DIN Rail Mounting
The DIN-Rail clip already attached on the rear side of the switch supports an EN 50022 standard DIN Rail as shown in Figure 3-1.
Spring
DIN rail
DIN rail clipper
1.35" (3.5 cm)
1.063" (2.7 cm)
0.295"
(0.75 cm)
Figure 1. DIN rail mounting.
Follow the steps below to mount the switch on the DIN-Rail track.
1. Insert the upper end of the DIN-Rail clip into the back of the DIN-Rail track from its upper side.
2. Lightly push the bottom of the DIN-Rail clip into the track.
3. Check if the DIN-Rail clip is tightly attached to the track.
4. To remove the switch from the track, reverse the steps 1–3 above.

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LGH1004A Hardened Ethernet Switch Quick Installation Guide
Hardware Installation
Wiring the DC Power Inputs
Before installing the power input, make sure the DC power supply complies with standard power supply certifications.
NOTE: Suitable wire gauge is from 12 to 24 AWG.
Follow these steps to wire the DC power cable to the connector:
1. Insert the positive and negative wires into the V+ and V- contacts on the terminal block connector.
2. Tighten the wire clamp screws to prevent the DC wires from loosening.
Wire clamp screws
V- and V+ contacts
Figure 2. Terminal block connector.
Wiring the Alarm Relay
The switch provides one dry relay output for a power or port link event. The alarm relay default is “open” and forms a closed
circuit when the event occurs. The relay conductor has a maximum of 24 Watts. When it connects with a 24-VDC power source,
the maximum current is 1 Amp. The following diagram shows how to create an alarm circuit.
WARNING: Do not connect to AC line.
Grounding screw
Ground
Figure 3. Alarm relay wiring.

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LGH1004A Hardened Ethernet Switch Quick Installation Guide
Wiring Grounding
AC motors, electric welding machines, and power devices generate electromagnetic and disturb communications. To prevent
noise, be sure to ground the switch. The following diagram shows how to create a connection.
Extra power
system
Alarm
system
Maximum 1 A current, 24 VDC
Figure 4. Grounding the switch.
Enable the Event Alarm Function
The switch has one dry relay output for port link fails or power fails. Just change the DIP switch to the desired setting and the
new configuration will be activated. You don’t need to reset the system.
On the bottom side of the switch, there is one 6-pin DIP switch for alarm control. Insert the power and port wiring and the DIP
switch for the intended alarm is switched to “ON.” The relay output will form a short circuit if the alarm occurred.
Figure 5. Setting the DIP switch.
Table 1. DIP switch settings for port link or power failure alarm.
Pin Number Status Description
P1 to P (Pin 1–5) ON Enables port link down alarm at this port.
OFF Disables port link down alarm at this port.
P6 ON Enables power failure alarm.
OFF Disables power failure alarm.

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LGH1004A Hardened Ethernet Switch Quick Installation Guide
Cabling
Ethernet Cabling:
Ports 1–4 use copper UTP/STP cable.
Table 2. Cable types for data transmision.
Description
10BASE-T: 2-pair UTP/STP CAT3, 4, 5 cable, EIA/TIA-568, 100-ohm, Max. 328 feet (100 m)
100BASE-TX: 2-pair UTP/STP CAT5 cable, EIA/TIA-568, 100-ohm, Max. 328 feet (100 m)
1000BASE-T: 4-pair UTP/STP CAT5 cable, EIA/TIA-568, 100-ohm, Max. 328 feet (100 m)
NOTE: For optimum data transmission and power delivery in any speed, use CAT5 cable or above.
Fiber port
Port 5 houses a fiber transceiver (SFP). See the table below for compatible SFPs.
Table 3. Compatible SFPs.
Part Number Description
LFP411 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 850-nm Multimode, LC, 300 m
LFP412 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Multimode, LC, 2 km
LFP413 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, LC, 10 km
LFP414 SFP, 1.25-Gbps Fiber with Extended Diagnostics, 1310-nm Single-Mode, LC, 30 km
LFP416 SFP with SGMII Interface, 1.25 Gbps, Copper, 10/100/1000BASE-T, Extended Diagnostics
SFP Installation
Before installing the SFP transceiver, make sure the SFP type at both ends of the link is the same and the transmission distance,
wavelength, fiber cable are correct for your application.
At both ends of the connection, simply plug the SFP transceiver into the switch, then connect the fiber cable.

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NOTES

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About Black Box
Black Box provides an extensive range of networking and infrastructure products. You’ll find everything from cabinets and racks
and power and surge protection products to media converters and Ethernet switches all supported by free, live 24/7 Tech support
available in 60 seconds or less.
Disclaimer:
Black Box Network Services shall not be liable for damages of any kind, including, but not limited to, punitive, consequential or cost of cover damages, resulting from any errors
in the product information or specifications set forth in this document and Black Box Network Services may revise this document at any time without notice.
© Copyright 2014. Black Box Corporation. All rights reserved. Black Box®and the Double Diamond logo are registered trademarks of BB Technologies, Inc.
Any third-party trademarks appearing in this manual are acknowledged to be the property of their respective owners.
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lgh1004a Quick Installation Guide, version 1