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The GDW-11 485 is a modem designed to allow connection of legacy RS-232, RS-422 and RS-485 serial equipment over a GSM/GPRS network. The AT command driven modem operates over the GSM/GPRS networks providing speed up to 14.4 kbit/s on GSM or 85.6 kbit/s when using GPRS.
The GDW-11 485 is designed for use in heavy duty industrial applications. The wide power range, galvanic isolation and the design of the termination and fail-safe circuit guarantees communication in the worst environments.
Only industrial grade components are used which gives the GDW-11 485 an MTBF of 1,100,000 hours and ensures a long service life. A wide operating temperature range of –25 to +70°C (–13 to +158°F) is achieved with no moving parts.
The GDW-11 485 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 and rail trackside applications.
The modem is simple to configure both by DIP switches as well as by the Westermo GD-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 dialing so special functions like data dialing and DTR dialing are provided to enable these devices to automatically establish connections.
| Status: | Active |
| Article number: | 3615-0030 |
| Ports: | 1 x 300 bit/s to 115.2 kbit/s, RS-232. 1 x 1200 bit/s to 115.2 kbit/s, RS-422/485. 1 x SIM slot. |
| Description: | GSM modem, GSM / GPRS |
| Warranty period: | 5 Years |
| R&TTE: | Article 3.1b EN 301 489-1, EN 301 489-7 Article 3.2 EN 301 489-1, EN 301 419-1, EN 301 511 |
| Service life, operating: | Operating, 10 year |
| EN 61000-6-2: | Immunity industrial environments |
| EN 55024: | Immunity IT equipment |
| EN 61000-6-3: | Emission residential environments |
| FCC part 15: | Class B |
| EN 50121-4: | Railway signalling and telecommunications apparatus |
| IEC 62236-4: | Railway signalling and telecommunications apparatus |
| 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% AM (1 kHz), 80 – 2000 MHz |
| 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 – 230 MHz Power ports, 10 V 80% AM (1 kHz), 0.15 – 230 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, 1000 A/m, 6.4 / 16 ms 5 pos/5neg pulse in XYZ direction |
| 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: | Enclosure, class B |
| FCC part 15, radiated RF emission : | Enclosure, class B |
| EN 55022, conducted emission: | AC power ports, class B DC power ports, class B |
| FCC part 15, conducted emission: | AC power ports, class B |
| Safety: | EN 60950, IT equipment |
| 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) |
| Temperature, operating: | –25 to +50°C (–13 to +122°F) |
| Temperature, storage : | –30 to +85°C (–22 to +185°F) |
| Humidity, operating: | 5 to 95% relative humidity |
| Humidity, storage : | 5 to 95% relative humidity |
| 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) |
| Weight: | 0.2 kg |
| Degree of protection: | IP 21 |
| Cooling: | Convection |
| Mounting: | Horizontal on 35 mm DIN-rail |
| 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 |
| Rated voltage: | 12 to 48 VDC |
| Operating voltage: | 10 to 60 VDC |
| Rated current: | 350 mA @ 12 VDC 150 mA @ 24 VDC 75 mA @ 48 VDC |
| Rated frequency: | DC |
| Inrush current: | 0.05A2s |
| Startup current: | 0.75A peak |
| Polarity: | Reverse polarity protected |
| Connection: | Detachable screw terminal |
| Connector size: | 0.2 – 2.5 mm2 (AWG 24-12) |
| Isolation to: | All other ports 3 kVrms 50 Hz 1 min |
| Shielded cable: | Not required |
| Electrical specification: | RS-232 V.24 |
| Data rate: | 300 bit/s – 115.2 kbit/s |
| Data format: | 7 or 8 data bits, Odd, even or no parity, 1 or 2 stop bits |
| Protocol: | Transparent |
| Retiming: | Yes |
| Transmission range: | 15 m / 49 ft |
| Isolation to: | Power port 3 kVrms 50 Hz 1 min |
| Connection: | 9-pin D-sub female (DCE) and 5 pos 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 |
| Frequency bands : | GSM900 TX 880 – 915 and RX 925 – 960 MHz GSM1800 TX 1710 – 1785 and RX 1805 – 1880 MHz |
| Data rate: | CSD |
| Connection: | SMA female, impedance |
| Isolation to: | Power port 3 kVrms 50 Hz 1 min |
| Electrical specification: | 3 volts SIM supported |
| Isolation to: | Power port 3 kVrms 50 Hz 1 min |