Euro Tech (Far East) Ltd.--

The TDW-33 is a simple industrial modem designed to allow cost effective and simple remote access to legacy serial industrial equipment. The AT command driven modem is capable of synchronising with a wide range of traditional modem negotiation standards providing data rates up to 56.7 kbit/s.

Designed with remote unmanned industrial locations in mind the modem can operate in extremes of temperature and electromagnetic fields. The complete galvanic separation of all interfaces ensures that earth loops and transients do not interfere with communication. To keep visits to the site to a minimum a watchdog monitors the modem ensuring constant readiness, and remote re-configuration means that changes to settings can be handled without a site visit.

Firewalls are not an issue as data does not use the internet and with call back security it is impossible for either accidental or deliberate access to any equipment attached to the modem.

The modem is simple to configure using the Westermo TD-tool software; standard commands can easily be entered, and saved configurations downloaded. RS-232 connections can be made using screw connections as well as the standard D-sub. The modem is designed to be connected to devices with no ability to control dialling so special functions like data dialling and DTR dialling are provided to enable these devices to automatically establish connections.

TDW-33

Product description
Status	Active
Article number	3619-0001
Ports	1 x Public Switched Telephone Network (PSTN) 1 x RS-232
Description	Industrial Telephone Modem
Warranty period	5 Years
Standard compliance
PSTN	CS 03 Part 1, issue 9 FCC part 68, TIA-968-A ETSI TS103 021-1, ETSI TS103 021-2, ETSI TS103 021-3 AS/ACIF S002, AS/ACIF S006
Reliability prediction
Service life, operating	Operating, 10 year
EMC (Electromagnetic Compatibility)
EN 55024	Immunity IT equipment
EN 55022	Emission IT equipment
EN 61000-6-1	Immunity residential environments
EN 61000-6-2	Immunity industrial environments
EN 61000-6-3	Emission residential environments
EN 61000-6-4	Emission industrial environments
FCC part 15	Class B
EN 50121-4	Railway signalling and telecommunications apparatus
IEC 62236-4	Railway signalling and telecommunications apparatus
EMC specifications
EN 61000-4-2, ESD	Enclosure contact, ± 6 kV Enclosure air, ± 8 kV
IEC 61000-4-3, RF field AM modulated	Enclosure: 20 V/m @ (80 – 2700) MHz 1 kHz sine, 80% AM
ENV 50204, RF field 900 MHz	Enclosure, 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
EN 61000-4-4, fast transients	Signal ports, ± 2 kV Power ports, ± 2 kV
EN 61000-4-5, surge	Signal 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, ± 2 kV line to line
EN 61000-4-6, conducted RF immunity	Signal 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 field	Enclosure, 100 A/m, 50 Hz, 16.7 Hz & 0 Hz
EN 61000-4-9, pulsed magnetic field	Enclosure, 300 A/m, 6.4 / 16 μs pulse
EN 61000-4-11, Voltage dips and interruption	AC power ports: 10 & 5 000 ms, interruption 10 & 500 ms, 30% reduction 100 & 1 000 ms, 60% reduction
EN 61000-4-16, Mains freq. 50 Hz	Signal ports, 100 V 50 Hz line to earth
SS 436 15 03, Mains freq. 50 Hz	Signal ports, 250 V 50 Hz line to line
EN 61000-4-29, voltage dips and interruption	DC power ports: 10 & 100 ms, interruption 10 ms, 30% reduction 10 ms, 60% reduction +20% above & –20% below rated voltage
EN 55022, radiated RF emission	Class B
FCC part 15, radiated RF emission	Class B
EN 55022, conducted emission	AC power ports, class B PSTN, class B DC power ports, class B
FCC part 15, conducted emission	AC power ports, class B
Safety
EN 60950-1, dielectric strength	Signal port to other isolated ports, 2 kVrms 50 Hz 1 min Power port to other isolated ports: 3 kVrms 50 Hz 1 min 2 kVrms 50 Hz 1 min (@ rated power <60 V)
Safety	UL/IEC/EN 60950-1, IT equipment
Climatic
Temperature, operating	–25 to +70°C (–13 to +158°F)
Temperature, storage	–40 to +70°C (–40 to +158°F)
Humidity, operating	5 to 95% relative humidity non condensing
Humidity, storage	5 to 95% relative humidity non condensing
Enclosure
Enclosure	UL 94, PC / ABS, flammability class V-1
Dimensions (W x H x D)	34 x 123 x 121 mm (1.33 x 4.84 x 4.76 in)
Weight	0.21 kg
Degree of protection	IP 21
Cooling	Convection
Mounting	Horizontal on 35 mm DIN-rail
Mechanical
IEC 60068-2-6, vibration	Operating: 7.5 mm, 5 – 8 Hz 2 g, 8 – 500 Hz
IEC-60068-2-27, shock	Operating, 15 g, 11 ms
Interface specifications, power
Rated voltage	12 to 483427 VAC
Operating voltage	10 to 60 VDC 10 to 42 VDC
Rated current	150 mA @ 12 VDC 70 mA @ 24 VDC 40 mA @ 48 VDC 150 mA @ 12 VAC 70 mA @ 24 VAC
Rated frequency	DC: – AC: 48 – 62 Hz
Inrush current	0.45 A²s
Startup current	0.30 Apeak
Polarity	Polarity independent
Isolation to	All other ports 3 kVrms 50 Hz 1 min
Connection	Detachable screw terminal
Connector size	0.2 – 2.5 mm² (AWG 24-12)
Shielded cable	Not required
Public Switched Telephone Network (PSTN)
Electrical specification	Public Switched Telephone Network
Data rate	300 bit/s – 33.6 kbit/s
Protocol	Bell103, Bell212, V.21, V.22, V.22Bis, V.23C, V.32, V.32Bis, V.34, V.90
Protection	Installation Fault Tolerant (up to ±60 V)
Isolation to	Power port, 3 kVrms 50 Hz 1 min RS-232, 2 kVrms 50 Hz 1 min
Connection	RJ-11C
Shielded cable	Not required
Interface specifications, RS-232
Electrical specification	EIA/TIA-232
Data rate	300 bit/s – 115.2 kbit/s
Data format	7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits; 9-12 bits
Protocol	Transparent
Retiming	Yes
Transmission range	Cable length ≤ 15 m
Isolation to	Power port, 3 kVrms 50 Hz 1 min PSTN Line, 2 kVrms 50 Hz 1 min
Connection	9-pin D-sub female (DCE) and Detachable screw terminal (DCE)
Connector size	Detachable screw terminal 0.2 – 2.5 mm² (AWG 24 – 12)
Shielded cable	Not required
Conductive housing	Isolated to all other circuits