Description
Product Introduction and Engineering Value
In industrial fieldbus networks, copper wiring can be vulnerable to electromagnetic interference and ground-potential differences. The BARTEC 07-7311-97WP5400 provides an optical-fiber communication path for compatible RS-485/PROFIBUS networks, supporting galvanic isolation between the bus, power supply, and optical interface. This makes it relevant to distributed control installations where electrical separation and reliable communication are important.
The unit belongs to BARTEC’s MODEX control-component range for industrial and hazardous-area applications. Correct installation requires more than matching the part number: the fiber connector, network role, bus termination, power supply, and enclosure protection must all match the original design.
Technical Specifications
The following specifications are documented for the BARTEC 07-7311-97WP family. Confirm applicability to the exact /5400 version before using these values for design approval.
| Parameter | Specification |
|---|---|
| Manufacturer | BARTEC GmbH |
| Model supplied | 07-7311-97WP5400 |
| Product family | MODEX PROFIBUS DP / LWL coupler |
| Network interface | Two-wire RS-485 bus |
| Supported protocols | PROFIBUS-DP and PROFIBUS-FMS, subject to configuration |
| Fiber connector | FSMA, as identified for the 5400 designation in associated system documentation |
| Supply voltage | 20–30 VDC for the documented 07-7311-97WP family |
| Power consumption | Maximum 3.0 W in the documented family manual |
| Current consumption | Approximately 125 mA at 24 VDC in the documented family manual |
| Galvanic isolation | Bus, power supply, and optical interface |
| Fiber transmission distance | Approximately 2,000 m with 50/125 µm glass fiber; approximately 3,000 m with 62.5/125 µm fiber under documented conditions |
| Typical signal delay | 3.4 µs, with a maximum specified delay of 4.5 µs plus fiber-related delay |
| Ambient temperature | −25°C to +60°C at T4, according to the family manual |
| Relative humidity | 5–95%, noncondensing |
| Mounting | TS35 DIN rail |
| Approximate dimensions | 94 × 91 × 75 mm for the documented family |
| Approximate weight | 600 g for the documented family |
Source: BARTEC’s official .
Bartec
Ordering-code warning: BARTEC’s 2023 operating instructions list 07-7311-97WP5500 as the FSMA ring-coupler version and 07-7311-97WP5510 as the ST version. Older system documentation associates 07-7311-97WP5400 with an FSMA ring-coupler application. These identifiers should not be treated as interchangeable without checking the installed unit’s label and applicable manual.
Field Applications and Maintenance Scenario
Field scenario: Restoring a fiber-optic PROFIBUS ring
A process plant experiences intermittent communication loss between a control system and a remote fieldbus segment installed in a potentially explosive area. The maintenance team identifies a BARTEC MODEX optical-fiber ring coupler as part of the affected network.
The engineer checks the DC supply, bus activity indicators, fiber link indicators, termination settings, and optical TX/RX connections. The team then verifies the exact coupler designation and fiber connector before replacing the unit. After installation, the network is tested at its configured data rate, and communication is checked around the ring before the process is returned to service.
This is an illustrative troubleshooting scenario, not a documented customer case.
Other relevant applications include:
- Hazardous-area PROFIBUS-DP networks: Fiber links serving instrumentation and distributed I/O in suitably certified Zone 1 or Zone 21 installations.
- Long-distance process-control links: Optical-fiber connections between fieldbus segments where copper transmission distance or electromagnetic interference is a concern.
- Electrically separated automation segments: Coupling RS-485 bus wiring to optical transmission paths to reduce conductive interference and ground-potential problems.
Application suitability depends on the exact coupler variant, network topology, fiber specification, and applicable hazardous-area approvals.
07-7311-97WP5400
07-7311-97WP5400
Quality Assurance and Testing
For this legacy communication component, incoming inspection should cover identity, physical condition, and communication performance.
- Part-number verification: Check the complete label and distinguish the older 5400 designation from the later 5500 FSMA ring-coupler designation.
- Physical inspection: Examine the enclosure, fiber connectors, terminals, and DIN-rail mounting points for damage. Do not open the factory-sealed enclosure.
- Power verification: Confirm the documented DC supply range and inspect the supply wiring before energizing the device.
- Optical inspection: Verify the connector type, fiber condition, TX/RX cross-connection, and specified transmission distance.
- Functional testing: Test bus activity, fiber-link status, communication at the required data rate, and the correct response to a communication fault.
- Documentation review: Obtain the supplier’s condition declaration, test evidence, warranty terms, and available traceability records.
BARTEC’s instructions specify that the module is not field-repairable and that work in hazardous areas must be performed by appropriately qualified personnel. The instructions also require the enclosure to remain sealed and the device to be de-energized before installation work.
New-surplus stock may be unused but stored for an extended period. Refurbished stock may contain repaired components. Ask the supplier to state the condition accurately and provide appropriate test evidence.
Replacement Pitfalls: What Engineers Should Check
Pitfall 1: Confusing the 5400 and 5500 designations
BARTEC documentation lists the 5500 version as the FSMA ring coupler in the newer product range, while 5400 appears in older system documentation. Verify the full label, connector arrangement, and applicable generation before approving a replacement.
Pitfall 2: Incorrect bus termination or fiber polarity
PROFIBUS segments require correct termination at the ends of the electrical bus. Fiber transmit and receive paths must also be cross-connected as required. Incorrect termination or TX/RX wiring can prevent communication even when the module powers up normally.
Pitfall 3: Overlooking hazardous-area installation requirements
A product-family approval does not automatically authorize every installation arrangement. Check the applicable certificate, enclosure requirements, equipotential bonding, mounting clearance, and local hazardous-area rules. Do not substitute a generic fiber converter for the certified assembly.
PRO TIP: Before removing the original unit, record its complete type label, optical connector, wiring, bus termination, and network role. Keep the applicable certificate and installation manual with the maintenance record.
Frequently Asked Questions
Q1. What does the BARTEC 07-7311-97WP5400 do?
It is associated with BARTEC’s MODEX RS-485/PROFIBUS optical-fiber ring-coupler applications. It connects a compatible electrical fieldbus to optical transmission paths and provides galvanic separation between the bus, power supply, and optical interface.
Q2. Does this model use an FSMA or ST fiber connector?
The 5400 designation is associated with FSMA in older system documentation. BARTEC’s newer product instructions list the 5500 version with FSMA and the 5510 version with ST. Confirm the physical connector and full model designation before ordering.
Q3. What power supply does the 07-7311-97WP family require?
The referenced BARTEC family manual specifies 20–30 VDC, with a maximum power consumption of 3.0 W. Verify the applicable documentation for the exact 5400 unit before energizing it.
Q4. Can the coupler be used in hazardous areas?
The product family is designed for specified hazardous-area applications. The manufacturer documents relevant Zone 1/21 and other approval information, but the exact certificate and installation conditions must be verified for the unit and location.
Q5. Is new-surplus or refurbished stock available?
Specialist industrial suppliers list BARTEC MODEX and PROFIBUS fiber-coupler products. Availability of the exact 5400 designation varies. Ask for a photograph of the nameplate, connector, and current stock condition before placing an order.
Q6. What warranty applies to a replacement unit?
Warranty terms depend on the seller and the product’s condition. Request written confirmation of the warranty period, functional test coverage, exclusions, and return process. For legacy hazardous-area equipment, also request the applicable product documentation and certificates.
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