The BARTEC 07-7331-2301 is a high-performance, explosion-protected PROFIBUS interface module specifically engineered for hazardous industrial environments. This module functions as a remote I/O station, allowing a central PLC to control up to 16 digital outputs over a PROFIBUS DP network. It is a critical component for decentralized automation in Zone 1 and Zone 2 areas, providing intrinsically safe signals to actuators, solenoid valves, and indicator lamps.
Technical Specifications and Datasheet
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Product Model: 07-7331-2301
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Communication Protocol: PROFIBUS DP (Decentralized Periphery)
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Output Channels: 16 Digital Outputs
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Output Type: Intrinsically Safe (Ex i)
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Operating Voltage: 24V DC (via backplane/bus)
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Transmission Rate: Up to 12 Mbit/s (Auto-sensing)
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Protection Class: IP 20 (Requires suitable Ex enclosure for field use)
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Operating Temperature: -20°C to +60°C
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Dimensions: 100mm x 70mm x 115mm
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Weight: 0.62 kg
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Origin: Germany
Application Fields
The 07-7331-2301 is designed for safety-critical and hazardous area automation, including:
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Oil & Gas Refineries: Controlling solenoid valves for fuel line management in Zone 1 locations.
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Chemical Processing: Managing actuator signals for mixing tanks and chemical reactors.
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Pharmaceutical Manufacturing: Digital control of high-purity processing equipment in explosive dust or gas atmospheres.
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Offshore Platforms: Reliable remote I/O for deck machinery and safety signaling systems.
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Paint & Coating Lines: Controlling automated spray systems where flammable vapors are present.
User Instructions
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Mounting: Clip the module onto a standard 35mm DIN rail within an appropriately certified explosion-proof enclosure or pressurized cabinet.
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Bus Connection: Connect the PROFIBUS DP cable using a standard Sub-D connector. Ensure that the bus termination is set correctly at the last station of the segment.
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Addressing: Assign the PROFIBUS station address using the rotary switches located on the front or side of the module before powering the system.
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Wiring Outputs: Connect the field actuators to the 16 digital output terminals. Ensure all wiring complies with “Ex i” (Intrinsic Safety) standards to prevent energy sparks.
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Configuration: Import the GSD file into your PLC engineering tool (such as Siemens TIA Portal or Step 7) to configure the I/O mapping and diagnostic parameters.
Q&A: Common Troubleshooting
Q: The “BUS FAULT” LED is flashing red. What is the cause? A: This usually indicates a communication error. Check that the PROFIBUS address matches the PLC configuration, verify the integrity of the DP cable, and ensure the bus connectors are properly seated.
Q: Can I mix intrinsically safe and non-intrinsically safe wiring in the same module? A: No. To maintain the safety certification, all 16 outputs must be handled as intrinsically safe circuits. Maintain the required clearance (usually 50mm) between these cables and any non-intrinsically safe wiring within the cabinet.
Q: Why are the outputs not engaging even though the PLC shows they are “ON”? A: Verify the external 24V DC power supply to the rack. The module requires sufficient bus power to drive the physical output relays/transistors. Also, check for short circuits in the field wiring which may trigger the module’s internal protection.
Similar Model Recommendations
If your system requires different I/O configurations or protocols, consider these BARTEC components:
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BARTEC 07-7331-2302: A variation of the PROFIBUS interface, often featuring different channel densities or input capabilities.
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BARTEC 07-7331-2101: Digital Input module designed for 16-channel sensing in hazardous areas.
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BARTEC 07-7311-2301: Analog Output module for modulating valves and positioners.
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SIEMENS ET 200iSP: A modular remote I/O system frequently used as an alternative or integrated with BARTEC systems.
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STAHL IS1+: A competing intrinsically safe remote I/O system with similar PROFIBUS connectivity features.
