Industrial Ethernet Media Converter

Industrial Ethernet Media Converter – MCI-422 MM/SM

Industrial Ethernet Media Converter MCI-422

The MCI-422 is Industrial Converter with a simple and cost effective Ethernet device suitable for use in a wide range of factory and building automation applications. The device can be used as either a switch or a dual channel converter. Two models are available – The SC2 for use on up to 2 km (1.24 mi) of multimode fibre and the SC30 for single-mode applications to 30 km (18.6 mi).

The unit is designed for DIN rail mounting into industrial cabinets allowing simple Ethernet connections to be established between PLCs, I/O units, drives, inverters and HMIs. The dual power input makes the unit ideal in these types of application and the fault relay can be connected to an I/O unit to provide simple network management.

Designed to work in industrial environments with its IP 31 Aluminium housing and a wide temperature specification the MCI-422 is an ideal automation solution,

The Industrial Ethernet Media Converter MCI-422 is so easy to use, simply connect power to the screw terminals and plug in your RJ-45 cables. If you plan to use the fault contacts a DIP switch allows configuration whilst LEDs provide simple diagnostics if required.

  • Two Channels 10/100 TX to 100 FX media converter
  • Two 10/100 TX with 2 100 FX Fast Ethernet Fibre Switch
  • Supports Auto MDI/MDI-X, Auto Negotiation
  • Supports Multi-mode 2 km, Single-mode 30 km
  • 3.2 Gbit/s Non-Blocking Switch Fabric
  • Auto Link Loss Forwarding (LLF) for fault detection
  • Power and Port event alarm
  • Redundant 10~60 V DC Power inputs with DC polarity protection
  • NEMA -TS2 Compliance (applying)
  • Aluminum case with IP-31 grade protection
  • Supports 1.5 KV Hi-Pot isolation protection
  • Operating temperature –25 to 75ºC for hazardous environment application(–40 ~ 75ºC wide operating temperature model available by request)


• Techonology
IEEE 802.3 10Base-T
IEEE 802.3u 100Base-TX
IEEE 802.3u 100Base-FX
IEEE 802.3x Flow Control and Back Pressure
• Performance
Switch Technology 3.2 Gbit/s Store and Forwarding Technology
System forwarding performance
1.19 Mega packets per second, 64 bytes packet size. (Switch Mode)
14880 pps for 10Base-T
148810 pps for 100Base-TX/ FX
Mac address 1K MAC address entries with automatic learning and aging (Switch Mode only)
Packet buffer 512 kbits shared memory
Forwarding Technology Store and forward
Link Lose Forward Supports Bi-directional Link Loss Forwarding function (Converter mode only)
Operating Mode
Converter/Switch mode selected by DIP switch
Switch Mode: data exchange on 4 ports (Channel A, B exchange)

Converter mode: data forwarding on independent channel (A, B)

Digital Output Dry Relay Output with 1 A @ 24 V DC ability
• Interface
Ethernet copper port 2 × 10/100 TX ports with Auto MDI/MDI-X, Auto Negotiation
Fibre port
2 × 100 Mbit/s Fibre port, SC or ST (optioned).
Westermo MCI-422f-mm: Multi-mode (Channel A,B)
Westermo MCI-422f-ss : Single-mode (Channel A,B)
Westermo MCI-422f-ms : Multi-mode (Channel A),

Single-mode (Channel B

Ethernet copper cable
RJ-45 Ethernet port : 100 meters
10Base-T: 2-pairs UTP/STP Cat-3,4 TIA/EIA 568-B cable
100Base-TX : 2/4 pairs UTP/STP Cat.5 TIA/EIA 568-B cable
Ethernet Fibre Cable
Westermo MCI-422-m: 2 km distance, 50 ~ 62.5/125 μm
Multi-mode Fibre Cabel.
Westermo MCI-422-s: 30 km distance, 8 ~ 10/125 μm

Single-mode Fibre cable

Diagnostic LEDs
System Power (Green on) : Power 1, 2
Relay Alarm: Active (Red)
Link Loss Forwarding: Enable (Green on)
Op. Mode: Convert (Green on)
Fibre Ethernet Port (Channel A/B): Link/Activity (Green on/Yellow Blinking)

Ethernet Port: Link/Activity (Green on/Yellow Blinking)

DIP switch
DIP Switch 1:
CH. B Fibre link event alarm control, Enable (On) / Disable (Off)
DIP Switch 2:
CH. A Fibre link event alarm control, Enable (On)/ Disable (Off)
DIP Switch 3:
CH. B Copper link event alarm control, Enable (On)/ Disable (Off)
DIP Switch 4:
CH. A Copper link event alarm control, Enable (On)/ Disable (Off)
DIP Switch 5:
Operating mode select, Converter mode (On)/ Switch mode (Off)
DIP Switch 6:
Link Loss Forwarding control, Enable(On)/ Disable (Off)
DIP Switch 7:
Power Event Alarm Control, Enable (On) / Disable (Off)
Reset button For Operating mode change & LLF function activation
Power connector Removable Terminal Block
Digital input Removable Terminal Block
• Power requirement
System power
DC 10~60V with polarity reverses correction.
Supports Positive / Negative power system
Consumption 6 Watts / DC 24
• Mechanical
System Installation DIN-Rail Installation
Enclosure protection Ingress Protection code – 31
Dimensions 99 (D) x 55 (W) x 120 (H), unit: mm (without Din-rail kit)
• Environmental
Operating voltage –25 ~ 75°C / –40 ~ 75°C (wide operating temperature model)
Operating humidity 0% ~ 95%, (non-condensing)
Storage temperature –40 ~ 75ºC
Storage humidity 0% ~ 95%, (non-condensing)
• Regulatory approvals
CE/EN 55022 class A, FCC Class A, Compliance with EN 50155 EMI
EN 61000-3-2:2006, EN 61000-3-3, EN 61000-6-2
CE/ EN 55024, EN 61000-6-4, Compliance with EN 50155 EMS, IEC 61000-4-2,
IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6, IEC61000-4-8
Safety Hi-pot Testing – AC 1.5 KV
Shock IEC60068-2-27
Vibration IEC60068-2-6
Free fall IEC60068-2-32

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