The Autronica BSD-340/2 is a high-capacity PowerLoop driver module designed for the AutroSafe interactive fire and gas detection system. It acts as a protocol converter between the AutroFieldBus and the PowerLoop, providing both power and communication over a two-wire bus. This module is specifically engineered for petrochemical, oil, and gas applications where long cable runs and high power delivery to detectors are required. Utilizing a ring topology, it ensures high system availability and is galvanically isolated to protect the integrity of the fire detection network in hazardous or industrial environments.

 

Technical Datasheet

Model Number: BSD-340/2

Part Number: 116-BSD-340/2

Dimensions: 150mm x 110mm x 60mm (Standard DIN Rail Chassis)

Weight: 0.55 kg

Country of Origin: Norway

Input Voltage: 24V DC (via AutroFieldBus)

Loop Output: 30V DC / 100W (PowerLoop capacity)

Loop Capacity: Up to 15 detectors per module (verified via PowerLoop calculator)

Ingress Protection: IP20

Operating Temperature: -15°C to +70°C

Application Fields

The BSD-340/2 is primarily deployed in safety-critical industrial sectors including:

• Offshore oil and gas platforms (FPSOs, drilling rigs).
• Petrochemical processing plants and refineries.
• Large-scale industrial warehouses with hazardous material storage.
• Gas detection systems in areas where standard wiring is impractical.
• Marine vessels requiring AutroSafe 4 integration.

 

Product Instructions

1. Mounting: Install the module on a standard 35mm symmetric DIN rail within the fire alarm control panel or a remote enclosure. Ensure there is sufficient space for ventilation as the PowerLoop can dissipate heat under full load.
2. Addressing: Before powering the system, set the unique AutroFieldBus address using the onboard DIP switches. Each BSD-340/2 must have a distinct address for the EAU-341 driver to recognize it.
3. Wiring: Connect the AutroFieldBus (typically Category 5 copper) to the input terminals. The PowerLoop output should be wired in a ring topology to ensure that a single cable break does not result in the loss of detectors.
4. Commissioning: Use the 9-pin D-Sub service port on the front of the module for maintenance and commissioning tasks. This allows for direct connection to a PC running Autronica configuration software.

 

Q&A – Frequently Asked Questions

Q: How many BSD-340 units can be connected to a single alarm panel?

A: Up to 31 BSD-340 units can be integrated into one AutroSafe alarm panel via the EAU-341 AutroFieldBus driver.

Q: Is the BSD-340/2 suitable for use in EX (Hazardous) zones?

A: The module itself should be installed in a safe area or inside an Ex-d enclosure. However, it is designed to drive detectors and interface units (like the BN-342/EX) located in hazardous areas.

Q: Does the PowerLoop require special cable?

A: The PowerLoop is a robust two-wire system, but for optimal performance and distance, it is recommended to use cables that meet Autronica’s specifications for resistance and capacitance.

 

Recommended Similar Models

• Autronica BSD-340/1 (Standard PowerLoop driver variant)
• Autronica BSD-340/EX (Explosion-protected version for specific zones)
• Autronica BSD-310 (Standard Loop Driver for AutroSafe)
• Autronica BN-342/2 (PowerLoop 4-20mA Input Interface Unit)
• Autronica EAU-341 (AutroFieldBus Driver Module)