Ethernet extender with serial support


The Wolverine DDW-226 allows effective Ethernet networks to be created over long distances (up to 15 km) at data rates up to 15.3 Mbit/s. The SHDSL technology makes it possible to reuse many types of pre-existing copper cables which can lead to considerable financial savings. Dependent on cable characteristics, distances up to 15 km (9.3 mi) can be achieved. The combination of WeOS and the integrated RS-232 port allows legacy equipment to become part of an IP backbone network.

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With its robust aluminium housing, the DDW-226 is designed for use in heavy duty industrial applications. The wide power range and I/O fault contact make it ideal for easy installation and monitoring in industrial applications. The Transient Blocking Unit (TBU) is acknowledged as the most effective form of protection against damaging noise spikes caused by lightning or high voltage equipment.

Only industrial grade components are used which gives the DDW-226 an MTBF of 700,000 hours and ensures a long service life. A wide operating temperature range of –40 to +70°C (–40 to +158°F) can be achieved without the need for moving parts or cooling holes in the case. The DDW-226 has been tested both by Westermo and external test houses to meet many EMC, isolation, vibration and shock standards, all to the highest levels suitable for heavy industrial environments.

WeOS has been developed by Westermo to allow us to offer cross platform and future proof solutions. WeOS can de­liver unique IP security functionality for this class of product e.g. a multiport DMZ can be constructed by utilizing the internal port based firewall function. Remote secure access to a network can be provided using encrypted VPNs.

For resilience, a ring of DDW-226s can be created using the FRNT protocol, or by using OSPF, the DDW-226 can form part of an enterprise network. For more details on WeOS functionality, please see the WeOS datasheet.


Technical data


Product description
Article number3642-0240
Ports4 x RJ-45, 10 Mbit/s or 100 Mbit/s, 2 x 2-position detachable screw terminal, 192 kbit/s to 15.3 Mbit/s, 1 x RJ-45, 300 bit/s to 115.2 kbit/s
DescriptionEthernet extender with serial support
Warranty period5 Year
Hazardous locationsEx, EN 60079-0 and EN 60079-15
Standard compliance
Reliability prediction
MTBF, operating700 000 hours @ 25°C
Service life, operating10 year
EMC (Electromagnetic Compatibility)
EN 55024 + A1 + A2Electromagnetic compatibility – Immunity IT equipment
EN 55022 +A1Information technology equipment.
Radio disturbance characteristics. Limits and methods of measurement
EN 61000-6-2Immunity industrial environments
EN 61000-6-4Emission industrial environments
FCC part 15Class A
EN 50121-4Railway signalling and telecommunications apparatus
EMC specifications
EN 61000-4-2, ESDEnclosure contact, ± 6 kV
Enclosure air, ± 8 kV
IEC 61000-4-3, RF field AM modulatedEnclosure:
10 V/m 80% AM (1 kHz), 80 – 1000 MHz
20 V/m 80% AM (1 kHz), 800 – 1000 MHz
10 V/m 80% AM (1 kHz), 1400 – 2100 MHz
5 V/m 80% AM (1 kHz), 2100 – 2500 MHz
1 V/m 80% AM (1 kHz), 2500 – 2700 MHz
EN 61000-4-4, fast transientsSignal ports, ± 2 kV
Power ports, ± 2 kV
EN 61000-4-5, surgeSignal ports unbalanced, ± 2 kV line to earth, ± 2 kV line to line
Signal ports balanced, ± 2 kV line to earth, ± 1 kV line to line
Power ports, ± 2 kV line to earth, ± 1 kV line to line
EN 61000-4-6, conducted RF immunitySignal ports, 10 V 80% AM (1 kHz), 0.15 – 80 MHz
Power ports, 10 V 80% AM (1 kHz), 0.15 – 80 MHz
EN 61000-4-8, power frequency magnetic fieldEnclosure, 300 A/m
EN 61000-4-9, pulsed magnetic fieldEnclosure, 300 A/m
EN 61000-4-16, Mains freq. 50 HzSignal ports, 100 V 50 Hz line to earth
SS 436 15 03, Mains freq. 50 HzSignal ports, 250 V 50 Hz line to line
EN 61000-4-29, voltage dips and interruptionDC power ports:
10 & 100 ms, interruption
10 ms, 30% reduction
10 ms, 60% reduction
+20% above & –20% below rated voltage
EN 55022, radiated RF emissionEnclosure, class A
EN 55016-2-3, radieted emissionEnclosure, class A
FCC part 15, radiated RF emissionEnclosure, class A
EN 55022, conducted emissionDC power ports, class A
SafetyEN 60950-1, IT equipment
UL/IEC/EN 60950-1, IT equipment
EN 60950-1, dielectric strengthSignal port to other isolated ports, 1500 Vrms 50 Hz 1 min
Power portto other isolated ports, 1500 Vrms 50 Hz 1 min
Temperature, operating–40 to +70°C (–40 to +158°F)
Temperature, storage–50 to +85°C (–58 to +185°F)
Maximum surface temperature135°C (temperature class T4)
Humidity, operating5 to 95% relative humidity
Humidity, storage5 to 95% relative humidity
EnclosureUL 94, aluminium/zink, flammability class V-0
Dimensions (W x H x D)134 x 105 x 122 mm
Weight1.5 kg
Degree of protectionIP 40
MountingHorizontal on 35 mm DIN-rail or wall-mouonted
IEC 60068-2-6, vibrationIEC 60068-2-6, operating
7.5 mm, 5 – 8 Hz
2 g, 8 – 500 Hz
IEC-60068-2-27, shockIEC 60068-2-27, operating, 15 g, 11 ms
Interface specifications, power
Rated voltage20 to 48 VDC
Operating voltage16 to 60 VDC
Rated current330 mA (495 mA) @ 20 VDC (with 500 mA USB load)
150 mA (215 mA) @ 48 VDC (with 500 mA USB load)
Rated frequencyDC
Inrush current1.5 A2s
Startup current400 mA
PolarityReverse polarity protected
Redundant power inputYes
Isolation toAll other
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cableNot required
Interface specifications, console
Electrical specificationTTL-level
Data rate115.2 kbit/s
Data format8 data bits, none parity, 1 stop bit, no flow control
Circuit typeSELV
Isolation toAll other except USB
Galvanic connection toUSB
Connection2.5 mm jack, use Westermo cable 1211-2027
Interface specifications, USB
Electrical specificationUSB 2.0 host interface
Data rateUp to 12 Mbit/s (full-speed mode)
Circuit typeSELV
Maximum supply current500 mA
Isolation toAll other except Console
Galvanic connection toConsole
ConnectionUSB receptacle connector type A
Conductive housingYes
Interface specifications, I/O relay output
Connect resistance30 Ohm
Isolation toAll other
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm2 (AWG 24 – 12)
Maximum voltage / current60 VDC / 80 mA
Interface specifications, I/O / Digital input
Voltage levelsLogic one >12V, Logic zero <1V
Isolation toAll other
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm2 (AWG 24 – 12)
Electrical specificationIEEE std 802.3. 2005 Edition
Data rate10 Mbit/s or 100 Mbit/s, manual or auto
DuplexFull or half, manual or auto
Circuit typeTNV-1
Transmission rangeUp to 150 m with CAT5e cable or better
Isolation toAll other
ConnectionRJ-45 auto MDI/MDI-X
Shielded cableNot required, except when installed in Railway applications as signalling and telecommunications apparatus and located close to rails.
Conductive housingYes
Number of ports4
Interface specifications, DSL
Electrical specificationITU-T G.991.2 Annex B
Data rate192 kbit/s to 15.3 Mbit/s
ProtocolEFM according to IEEE 802.3-2005
Transmission rangeAccording to ITU-T G.991.2 depending on line quality
Isolation toAll other
ConnectionDetachable screw terminal
Connector size0.2 – 2.5 mm2 (AWG 24 – 12)
Shielded cableNot required
Number of ports2
Interface specifications, RS-232
Electrical specificationEIA RS-232
Data rate300 bit/s – 115.2 kbit/s
Data format7 or 8 data bits, odd/even/none parity, 1 or 2 stop bits
ProtocolTransparent, optimised by packing algorithm
Circuit typeSELV
Transmission range15 m / 49 ft
Isolation toPower, DSL, Ethernet
Galvanic connection toUSB, Console
Shielded cableNot required
Conductive housingYes



Protocols and functionality
Serial port technologyModem Replacement, Modbus Gateway, PPP dial in/dial out and Serial over IP
Resiliency and high availabilityFast Reconfiguration of Network Topology (FRNT)
FRNT ring coupling
Multilink dual homing
IEEE 802.1D (STP) and IEEE 802.1w (RSTP)
IEEE 802.1AX/802.3ad Link Aggregation
Layer 2 switchingIEEE 802.1Q Static VLAN and VLAN Tagging
IEEE 802.3x Flow Control
IGMPv2/v3 snooping
AVT Dynamic VLAN (Adaptive VLAN Trunking)
Management VLAN (Management Interface concept)
Static Multicast MAC filters
Layer 2 QoSIEEE 802.1p Class of Service
Layer 2 securityIEEE 802.1X Port Access Control
MAC Authentication
IP routing, cyber security, firewall and VPNStatic IP routing
Dynamic IP routing
• OSPFv2
• RIPv1/v2
• Robust VRRP
• Static Multicast Routing
Stateful Inspection Firewall
• NAT and 1-1 NAT, Proxy ARP for 1-1 NAT
• Port Forwarding
IKEv1, certificates and PSK
• IKEv1
• VPN failover
Loopback Interface
ManageabilityManagement tools
• Web interface (HTTP and HTTPS or CLI (SSHv2 or Telnet)
• SNMPv1/v2c/v3
• Flexible management of configuration and log files
Flexible alarm/event handling system
USB Fluid configuration (Available for products with USB port)
Digital I/O and Flexible alarm/event handling system
Syslog (log files and remote syslog server)
Port Monitoring
SNTP (NTP client)
PPPoE client
DHCP client
DHCP server including option 82
DHCP relay agent including option 82
SNMP MIB supportRFC1213 MIB-2
RFC2863 Interface MIB (ifXTable)
RFC2819 RMON MIB (etherStatsTable)
RFC4188 Bridge MIB
RFC4133 Entity MIB (entityPhysical)
RFC3433 Entity Sensor MIB
RFC3621 Power Ethernet MIB

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Ethernet extender with serial support