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Appendix B 

 

                     724-746-5500   |   blackbox.com

 

Page 29

 

The 24VDC option is particularly useful in the industrial environment, where 

it is common for facilities to operate on 24VDC power.  The 24VDC applications are 
mainly in heavy duty industrial automation such as factory floor, process plants, 
HVAC, military equipment, etc. 
 

B4.0        12, 24 and –48VDC INSTALLATION  

 

This section describes the proper connection of the 12, 24, –48, leads to the 

DC power terminal block on the LBH08x/LBH18x Switch.

 

The DC terminal block on 

the LBH18x Switch is located on the right side of the unit and the LBH08x terminal 
block is located on the left front and both are equipped with four (4) screw-down lead 
posts. The power terminals are identified as positive (+) and negative (-), and they 
are electrically floating inside the unit so that either may be grounded by the user if 
desired.  The chassis is “earth” or ground (GND).

 

 

The connection procedure is straightforward. Simply insert the DC leads to 

the Switch’s power terminals, positive (+) and negative (-) screws. The use of Ground 
(GND) connects to the Switch chassis screw provided under the DC terminal. Ensure 
that each lead is securely tightened. 

 

Fig B4.0a  LBH18x Power Input 

 

Fig B4.0b  LBH08x Power Input

 

Содержание LBH081A

Страница 1: ...Hardened Industrial Switch Provides eight 10 100 copper ports and one 100 Mbps fiber uplink port Operation is plug and play Front mounted LEDs provide status information on each port LBH081A LBH181A...

Страница 2: ...when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required...

Страница 3: ...el flujo de aire por los orificios de ventilaci n 10 El equipo el ctrico deber ser situado fuera del alcance de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo...

Страница 4: ...of Telcordia Technologies UL is a registered trademark of Underwriters Laboratories Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners We re here...

Страница 5: ...ing Ethernet Media 20 3 3 1 Connecting Twisted Pair RJ 45 CAT 3 or CAT 5 21 3 3 2 Connecting Fiber Optic SC type Snap In 21 3 3 3 Connecting Fiber Optic LC type Small Form factor SFF 21 3 3 4 Connecti...

Страница 6: ...g IEEE 802 1x Port based Network access control Maximum 10 Mbps Ethernet Segment Lengths Unshielded twisted pair 100 m 328 ft Shielded twisted pair 150 m 492 ft 10BASE FL multi mode fiber optic 2 km 6...

Страница 7: ...gth sheet metal Dimensions 1 25 in H x 6 6 in W x 6 0 in D 3 18 cm H x 16 76 cm W x 15 24 cm D Cooling method Convection Weight 1 lb 454 g DC Power Supply Internal floating ground DC Power Connector T...

Страница 8: ...l Switch with 24VDC power input eight 10 100Mbps switched RJ45 ports one 100Mbps Fiber port and Wall mount brackets included LBH182A HD ff Same as LBH182A H except a DIN Rail bracket is included LBH18...

Страница 9: ...the original shipping container Refer to Chapter 5 Troubleshooting for specific return procedures 2 2 Product Description General In factory automation control systems field bus control systems are gi...

Страница 10: ...up because they are standards based These switches also are ideal for cell phone backhaul using faster and longer range fiber cable Typically DIN rail mounted these switches can withstand factory flo...

Страница 11: ...Mbps and full half F H duplex indicators The DC power terminal block is located at the right side of the chassis looking at the front DC power option inputs are 12 24 and 48VDC 2 2 2 LBH08x chassis wi...

Страница 12: ...rmation While other switching technologies such as cut through or express impose minimal frame latency they will also permit bad frames to propagate out to the Ethernet segments connected The cut thro...

Страница 13: ...is a collision based flow control mechanism when operating at half duplex only When the Switch detects that its free buffer queue space is low the Switch prevents more frames from entering by forcing...

Страница 14: ...t connections with auto negotiation and auto cross MDI MDIX functionality All RJ 45 ports are capable of half or full duplex Installation is Plug and Play operation is transparent to software The LBH0...

Страница 15: ...se immunity and distance The LBH08x LBH18x Series Hardened Ethernet Switches are ideal for these applications Example 1 LBH18x for industrial application Equipped with lots of useful features includin...

Страница 16: ...10 Mbps domain so overall performance of the network is sustained at the highest possible level Example 2 LBH08x for office installation In this example the LBH08x Switch is used to serve a small offi...

Страница 17: ...LBH18x Series Switches For vertical panel mounting and wall mounting see Section 3 1 2 For vertical DIN Rail mounting see Section 3 2 For DC power input data see Appendix B The rugged metal case of th...

Страница 18: ...a rear space of about 1 8 inch or 3mm This allows air circulation and cooling of the rear part of the case For best cooling of the switch attach the metal brackets to metal rather than wood or plasti...

Страница 19: ...Chapter 3 Installation 724 746 5500 blackbox com Page 19 Fig 3 1 2b LBH08x mounting dimensions...

Страница 20: ...ttachment and removal The LBH08x LBH18x models with HD have the DIN Rail bracket included and assembled on the unit at the factory 3 3 Connecting Ethernet Media The LBH08x LBH18x Switches are specific...

Страница 21: ...onnectors Save these dust caps for future use 2 Wipe clean the ends of the dual connectors with a soft cloth or lint free lens tissue dampened in alcohol Make certain the connectors are clean before c...

Страница 22: ...s passive Attenuation Attenuation Cable loss LED aging loss Insertion loss safety factor 3 3 6 Connections to NICs which support Auto Negotiation The copper ports of LBH08x LBH18x Industrial Switches...

Страница 23: ...ribed below Switching Filtering and Forwarding Each time a packet arrives on one of the switched ports the decision is taken to either filter or to forward the packet Packets whose source and destinat...

Страница 24: ...t has auto negotiated for operation If a LBH08x or LBH18x RJ 45 port is connected to a non negotiating device it will default to 10 Mbps speed and half duplex mode per the IEEE 802 3u standard 4 3 Aut...

Страница 25: ...Before Calling for Assistance 1 If difficulty is encountered when installing or operating the unit refer back to the Installation Section of the applicable chapter of this manual Also check to make s...

Страница 26: ...occurrence of the problem Any changes to system administration procedures should all be noted in this record 5 3 Return Material Authorization RMA Procedure All returns for repair must be accompanied...

Страница 27: ...terial Authorization RMA number on the outside of the shipping container 3 Black Box is not responsible for your return shipping charges 4 Ship the package to Black Box Network Services contact Black...

Страница 28: ...pplied to the two inputs It protects the Switch from incorrect DC input connections An incorrect polarity connection for example will neither affect the Switch its internal power supply nor will it bl...

Страница 29: ...he LBH18x Switch is located on the right side of the unit and the LBH08x terminal block is located on the left front and both are equipped with four 4 screw down lead posts The power terminals are ide...

Страница 30: ...ve potential The more ve voltage lead from 48V or 48V supply must be connected to the post labeled B4 1 UL Requirements for DC powered units CAUTION 48VDC products shall be installed with a readily a...

Страница 31: ...724 746 5500 blackbox com Page 31...

Страница 32: ...724 746 5500 blackbox com LBH081A rev 1...

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