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IFS MC251-4P/1S and NS2051-4P/1T User
Manual
Overview
The MC251-4P/1S Industrial 802.3af Power over Ethernet
Media converter and NS2051-4P/1T 802.3af PoE switch fully
comply with the IEEE 802.3 10Base-TX and IEEE 802.3u
100Base-TX standards. The MC251-4P/1S and the NS2051-
4P/1T Industrial 802.3af Power over Ethernet Media converters
also supports IEEE 802.3x flow control and back pressure
standard in half-duplex to eliminate packet loss.
Package contents
Unless specified, the term "industrial fast Ethernet switch"
mentioned in this user manual refers to the MC251-4P/1S and
the NS2051-4P/1T.
Open the box of the industrial fast Ethernet switch and
carefully unpack it. The box should contain the following items:
•
Industrial fast ethernet switch × 1
•
CD with user manual × 1
•
DIN rail kit × 1
•
Wall-mount kit × 1
If any of these are missing or damaged, please contact your
dealer immediately. If possible, retain the carton including the
original packing material, and use them again to repack the
product in case there is a need to return it to us for repair.
Product features
Physical port
Model
Ports
Name
Copper
Optical
NS2051
NA
5 x
-4P/1T
10/100Base-
TX
MC251-
4x
1 x
4P/1S
10/100Base-
100Base-
TX
FX
IEEE 802.3af PoE
•
Complies with IEEE 802.3af Power over Ethernet End-
Span PSE
© 2019 United Technologies Corporation.
Interlogix is part of UTC Climate, Controls & Security, a unit of United Technologies Corporation. All rights reserved. All trademarks are the
property of their respective owners. Information in this document is subject to change without notice.
Fiber Optical Interface
Mode
Connector
Distance
NA
NA
NA
Depends
Depends
Depends
on SFP
on SFP
on SFP
Module
Module
Module
•
Up to four IEEE 802.3af devices powered
•
Supports PoE Power up to 15.4 W for each PoE port
•
Auto detect powered device (PD)
•
Circuit protection prevent power interference between
ports
•
Remote power feeding up to 100 m
Layer 2 features
•
Complies with IEEE 802.3 10Base-T, IEEE 802.3u
100Base-TX / 100Base-FX Ethernet standard
•
Supports Auto-Negotiation,10/100Mbps Half / Full Duplex
and Auto MDI/MDI-X
•
High performance Store and Forward architecture,
Runt/CRC filtering eliminates erroneous packets to
optimize the network bandwidth
•
Prevents packet loss with Back Pressure (Half-Duplex)
and IEEE 802.3x PAUSE Frame Flow Control (Full-
Duplex)
•
Backplane (Switching Fabric): 1 Gbps
•
Automatic address learning and address aging
•
Integrated address look-up engine, supports 2K absolute
MAC addresses
•
CSMA/CD Protocol
Industrial case / installation
•
IP-30 Aluminum Metal case / Protection
•
DIN Rail and Wall Mount Design
•
Redundant Power Design: 24 or 48 VDC, redundant
power with polarity reverse protect function
•
Supports EFT protection 6000 VDC for power line
•
Supports 6000 VDC Ethernet ESD protection
•
-40 to 75°C operating temperature
Installation
This section describes the functionalities of the Industrial Fast
Ethernet components and guides how to install it on the
desktop. Basic knowledge of networking is assumed. Please
read this chapter completely before installation.
P/N 1072572-EN • REV A • ISS 25JAN19
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Summary of Contents for Interlogix MC251-4P/1S
- Page 1 P/N 1072572-EN • REV A • ISS 25JAN19 Interlogix is part of UTC Climate, Controls & Security, a unit of United Technologies Corporation. All rights reserved. All trademarks are the property of their respective owners. Information in this document is subject to change without notice.
- Page 2 Product Description Per 10/100Base TX port Color Function The IFS MC251-4P/1S and the NS2051-4P/1T are 5-Port 10/100Mbps with 4-Port PoE unmanaged industrial fast Link/ACT Green Lit: indicates the port is successfully Ethernet switches and provide non-blocking wire-speed connecting to the network at 100 Mbps.
-
Page 3: Din-Rail Mounting Installation
Mounting Note: Ensure that the industrial fast Ethernet switch is mounted vertically with the power connectors on the top and a minimum of three inches above and below the switch to allow for proper air flow. This device uses a convection flow of hot air which rises and brings cold air in from the bottom and out of the top of the device. -
Page 4: Wall Mount Plate Mounting
Please refer to the LED indicators section for LED definitions. Insert the fiber cable from the MC251-4P/1S to the fiber network. TX, RX must be paired at both ends. The optical port LED on the MC251-4P/1S illuminates when the connection is established with a network device. -
Page 5: Troubleshooting
Product specifications Store-and-Forward is one type of packet-forwarding technique. A Store-and-Forward industrial switch stores the incoming MC251-4P/1S frames in an internal buffer and checks for any errors from the frames before transmission. Lack of error packet occurrence is Hardware specifications important for an efficient and stable network. -
Page 6: Appendix: Networking Connection
NS2051-4P/1T Hardware specifications Appendix: Networking 10/100BASE-TX Ports connection 100Base-FX interface IEEE 802.3af PoE ports RJ45 pin assignments Dimensions (W × D × H) 135 × 87.8 × 56 mm 1000Mbps, 1000BASE-T Weight 842 g Contact MDI-X Power requirements 12 to 48 VDC BI_DA+ BI_DB+ Installation... -
Page 7: Regulatory Information
SIDE 2 Ensure that the connected cables have the same pin assignment and color as described above. Regulatory information Certification Manufacturer Interlogix. European Union This product complies with the applicable 2955 Red Hill Avenue, Costa Mesa, CA 92626 directives harmonized European standards listed under the...
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