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Specification & Description
| Specification | Description |
|---|---|
| Part Number | TDW-33 |
| Manufacturer | Westermo |
| Category | General Automation |
| Part Family | - |
| Dimensions (W x H x D) | 35 mm x 121 mm x 119 mm |
| Weight | 0.21 kg |
| Degree of Protection | IP21 |
| Mounting | Horizontal on 35 mm DIN-rail |
| Operating Voltage | 10 to 60 VDC or 10 to 42 VAC |
| Rated Current | 150 mA @ 12 VDC, 70 mA @ 24 VDC, 40 mA @ 48 VDC, 150 mA @ 12 VAC, 70 mA @ 24 VAC |
| Operating Temperature | -25 to +70°C (-13 to +158°F) |
| Storage Temperature | -40 to +70°C (-40 to +158°F) |
| Humidity | 5 to 95% relative humidity non-condensing |
| Altitude | Operating up to 2000 m / 70 kPa |
| Data Rate (PSTN) | 300 bit/s – 33.6 kbit/s |
| Data Rate (RS-232) | 1 200 bit/s – 115.2 kbit/s |
| Protocols Supported | Bell103, Bell212, V.21, V.22, V.22Bis, V.23C, V.32, V.32Bis, V.34, V.90 |
| Connection (PSTN) | RJ-11C |
| Connection (RS-232) | 9-pin D-sub female (DCE) and Detachable screw terminal (DCE) |
| EMC Compliance | EN 55022, EN 55024, EN 61000-6-1, EN 61000-6-2, EN 61000-6-4, EN 50121-4, IEC 62236-4 |
| Safety Compliance | UL/IEC/EN 60950-1 |
| PSTN Compliance | CS 03 Part 1, ETSI TS103 021-1, ETSI TS103 021-2, ETSI TS103 021-3, AS/ACIF S002, AS/ACIF S006 |
| Description | The Westermo TDW-33 is an industrial telephone modem designed for robust and reliable communication in demanding environments. It supports a wide range of data rates and protocols, ensuring compatibility with various systems. The modem is built to withstand harsh conditions, with a wide operating temperature range and high humidity tolerance. It is easy to install on a standard 35 mm DIN-rail and offers multiple connection options for flexibility. The TDW-33 is compliant with stringent EMC and safety standards, making it a dependable choice for industrial automation applications. |
The Westermo TDW-33 is an industrial-grade telephone modem designed to ensure reliable communication in demanding environments. This modem supports data rates up to 56 kbit/s on the PSTN line side and terminal data rates up to 115.2 kbit/s via its RS-232 interface. Engineered for robustness, the TDW-33 features transient protection on all interfaces and a watchdog function that automatically resets the modem in case of a fault, making it ideal for remote and unmanned installations.
The TDW-33 is equipped with advanced security features, including password protection, dial-back security, and caller ID answering, ensuring that only authorised users can access the connected equipment. Its tri-galvanic isolation between the interface, line, and power supply enhances safety and reliability.
Designed for ease of installation, the TDW-33 mounts effortlessly onto a 35 mm DIN-rail and operates within a wide temperature range of -25°C to +70°C. It is powered by a 12–36 V DC supply and features screw terminal connections for secure and straightforward wiring.
With its robust design, high data rate capabilities, and comprehensive security features, the Westermo TDW-33 is an excellent choice for industrial applications requiring dependable and secure telephone modem communication.
Commonly Asked Questions
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Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Frequently Asked Questions
What is the primary function of this industrial modem?
The primary function of this industrial modem is to facilitate reliable data communication over telephone lines in industrial environments.
What are the dimensions of the modem?
The dimensions of the modem are 119 mm in height, 35 mm in width, and 121 mm in depth.
What type of mounting does this modem support?
This modem supports horizontal mounting on a 35 mm DIN-rail.
What is the operating temperature range for this modem?
The modem operates within a temperature range of -25°C to +70°C.
What are the power requirements for this modem?
The modem operates on a voltage range of 10 to 60 VDC or 10 to 30 VAC, with a rated current of 150 mA at 12 VDC.
What data rates does this modem support?
The modem supports data rates from 300 bit/s to 33.6 kbit/s for PSTN connections and 1,200 bit/s to 115.2 kbit/s for RS-232 connections.
What protocols are supported by this modem?
The modem supports various protocols including Bell103, Bell212, V.21, V.22, V.22Bis, V.23C, V.32, V.32Bis, V.34, and V.90.
What type of cooling does this modem use?
The modem uses convection cooling to maintain optimal operating temperatures.
Is the modem protected against electrical surges?
Yes, the modem is designed to be fault-tolerant and can handle installation faults up to ±60 V.
What type of interface connections does this modem have?
The modem features a detachable screw terminal for power connections and an RJ-11C connector for PSTN connections. It also includes a 9-pin D-sub female connector for RS-232 connections.
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