The TURCK BL20-E-GW-DN is a robust, modular Ethernet Gateway and Power Supply Module for the BL20 series of modular I/O (Input/Output) systems. It serves as the central communication hub and primary power source for a distributed I/O station.
In simple terms, this module is the “brain and heart” of a BL20 I/O station. It connects the local I/O modules to a higher-level control system (like a PLC) via Ethernet and provides them with operating power.
Key Functions and Features
1. Gateway / Communication Interface:
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Protocol: DeviceNet™ (as indicated by the “-DN” suffix). It acts as a scanner (master) on the DeviceNet network, communicating with the PLC or controller.
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Network Connection: Features a 5-pin, screw-type terminal for the DeviceNet network (for data and 24V DC network power).
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Data Exchange: It collects data from the connected I/O modules (digital/analog signals) and makes it available to the DeviceNet master, and vice-versa.
2. Integrated Power Supply:
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Input Voltage: The module is powered by a wide-range 24V DC supply voltage (connected via a separate 3-pin terminal).
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Output Power: It generates and distributes a stabilized 24V DC voltage to all the I/O modules connected to its right-hand side on the BL20 base. This eliminates the need for a separate power supply module for the I/O circuits.
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Load Current: The integrated power supply can deliver sufficient current to power multiple I/O modules and their connected sensors/actuators.
3. Modular and Flexible Design:
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Backplane Bus: The module connects to the BL20 base and uses the internal bus to communicate with up to 63 additional I/O modules (digital, analog, serial, etc.) without external wiring between them.
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Configuration: The module is typically configured using TURCK’s PROCONFIG software, where you define the I/O mapping and network parameters.
4. Rugged and Industrial:
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Protection Rating: The entire BL20 system, including this gateway, is designed for IP67 protection. This means it is dust-tight and can withstand immersion in water, making it ideal for harsh industrial environments without the need for a control cabinet.
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Construction: Features a robust metal housing that is resistant to vibration, shocks, and chemicals.
Technical Specifications (Summary)
| Feature | Specification |
|---|---|
| Product Family | TURCK BL20 (Field-Logic) |
| Type | Ethernet Gateway with Integrated Power Supply |
| Order Number | 6827301 |
| Article Number | BL20-E-GW-DN |
| Network Protocol | DeviceNet™ |
| Input Voltage | 24 V DC (for gateway and internal I/O power supply) |
| Function | Scanner (Master) on the DeviceNet network |
| Max. Number of Modules | 64 (1 Gateway + 63 I/O modules) |
| Degree of Protection | IP67 |
| Configuration Software | TURCK PROCONFIG |
| Housing | Metal, rugged design |
Typical Application
This module is used to create a compact, decentralized I/O station directly on the machine, close to the sensors and actuators.
Example:
In an automotive assembly line, a BL20 station with the BL20-E-GW-DN gateway is mounted directly on a welding robot. It connects:
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Digital Inputs: from proximity sensors detecting part presence.
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Digital Outputs: to control pneumatic valves for clamps.
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Analog Inputs: from a pressure sensor.
