R. STAHL 9186/12-11-11 ISpac Fibre Optic Isolating Repeater
Het item werd toegevoegd aan uw offerteaanvraag
Product Information
The R. STAHL 9186/12-11-11 is a fibre optic isolating repeater from the ISpac product family, designed to provide physical layer signal conversion and galvanic isolation between electrical RS-485 fieldbus lines and multimode optical fibre links. Functioning as a high-performance communication module, this device converts electrical fieldbus signals into 850 nm optical transmissions, enabling interference-free data transport across distances up to 2,000 meters with 62.5/125 µm glass fibre or 1,600 meters with 50/125 µm glass fibre. It insulates sensitive automation networks against electromagnetic interference and hazardous ground loops across chemical processing, oil and gas, pharmaceutical manufacturing, and water treatment operations. The unit mounts on standard 35 mm DIN rails or pac-Bus systems and operates on a 24 V DC power supply with an acceptable operating range from 18 to 31.2 V DC.
Connecting the repeater into an existing topology relies on a 9-pin female SUB-D socket for electrical RS-485 fieldbus integration and dual ST sockets for optical transmit and receive channels. Commissioning a replacement unit requires no external software tools, as configuration is managed via hardware DIP switches located directly on the housing. These switches allow technicians to adjust transmission speeds from 9.6 kbit/s up to 1.5 Mbit/s, enable integrated bus termination, and set network operating modes for protocols including PROFIBUS DP, Modbus RTU, and R. STAHL ServiceBus. When installing a replacement module, matching the DIP switch alignment of the original unit ensures immediate protocol and signal compatibility without re-engineering. Technical support and tested spare units are available through ABC Industrial Parts to help minimize operational downtime during hardware replacement.
Real-time diagnostic feedback is provided directly through front-facing status LEDs and an integrated error signaling relay contact. A solid green PWR LED confirms functional auxiliary power, while a solid red ERR LED alerts operators to an optical link error, missing optical input power, or line interruption. Flashing yellow RxD and TxD LEDs indicate active data reception and transmission across the electrical RS-485 and optical fibre interfaces. First-line troubleshooting should verify supply voltage stability within 18 to 31.2 V DC, check ST fibre connector seating, inspect cable integrity, and confirm matching DIP switch settings. When an unlit PWR LED points to internal hardware failure, board-level repairs are not field-serviceable, making unit exchange or expert repair via ABC Industrial Parts the quickest route back to full operation.
Technical Specifications
| Manufacturer | R. STAHL |
| Part Number | 9186/12-11-11 |
| Model / Type | Fibre Optic Isolating Repeater |
| Product Family | ISpac |
| Component Type | Communication Module |
| Supply Voltage | 24 V DC |
| Supply Voltage Range | 18 - 31.2 V DC |
| Rated Current | 100 mA |
| Optical Wavelength | 850 nm |
| Optical Connector | ST (BFOC/2.5) |
| Electrical Interface | RS-485 (SUB-D 9-pin female) |
| Transmission Rate Range | 9.6 - 1500 kbit/s |
| Max Transmission Distance | 2000 m |
| Mounting Type | 35 mm DIN Rail / pac-Bus |
Programming and Configuration
The R. STAHL 9186/12-11-11 operates entirely without specialized programming software or fieldbus configuration tools. Hardware setup is accomplished via intuitive DIP switches built directly into the housing, allowing technicians to establish operational parameters prior to mounting or energizing the module.
These DIP switches govern essential communication parameters including baud rate selection from 9.6 kbit/s to 1.5 Mbit/s, activation of internal bus termination, and operational mode configuration for different network protocols. Settings remain non-volatile, ensuring that a replacement module configured with matching switch positions resumes communication instantly upon installation.
Communication and System Integration
System integration is facilitated by two distinct physical interfaces: an electrical RS-485 port utilizing a 9-pin female SUB-D connector and an optical interface featuring dual ST (BFOC/2.5) socket connections. The module converts electrical signals to 850 nm optical signals, allowing seamless communication over multimode glass fibre cables.
The unit supports key industrial fieldbus protocols, including PROFIBUS DP, Modbus RTU, and R. STAHL ServiceBus networks. Signal reach extends up to 2,000 meters using 62.5/125 µm multimode fibre or up to 1,600 meters using 50/125 µm fibre. Physical mounting is compatible with standard 35 mm DIN rails (NS 35/15 and NS 35/7.5) as well as pac-Bus system backplanes.
Diagnostics and Status Indication
Continuous diagnostic feedback is provided by four front-panel LEDs that display power status, optical link health, and data traffic on both electrical and optical channels. In addition to visual indication, an integrated error signaling relay contact provides a hardware signal output for continuous remote link monitoring.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| PWR | Green - Solid / Off | Green: Auxiliary power supply operational; Off: No power or internal hardware fault |
| ERR | Red - Solid / Off | Red: Error on FO link, missing optical input power, or line interruption; Off: Normal operation |
| RxD | Yellow - Flashing | Yellow flashing: Receiving data on RS-485 electrical interface |
| TxD | Yellow - Flashing | Yellow flashing: Transmitting data on FO optical interface / RS-485 interface |
Replacement and Spare Part Considerations
Replacing an existing unit with a new or reconditioned R. STAHL 9186/12-11-11 requires no parameter transfer software or network re-addressing. Before applying power, verify that the replacement unit's hardware DIP switches match the settings of the removed module to ensure identical transmission rates and bus termination.
Installation involves snapping the module onto the 35 mm DIN rail or pac-Bus header, attaching the 9-pin SUB-D RS-485 connector, and connecting the ST optical fibre pairs. Confirming correct optical TX and RX fiber orientation and inspecting input voltage within 18 to 31.2 V DC ensures immediate resumption of fieldbus communication.
Frequently Asked Questions
Does the R. STAHL 9186/12-11-11 require configuration software?
No software tools are required. All settings, including baud rate, bus termination, and operating modes, are configured manually using hardware DIP switches located on the module housing.
What maximum distance can this optical repeater cover?
The repeater supports distances up to 2,000 meters when using 62.5/125 µm multimode glass fibre cables, or up to 1,600 meters when using 50/125 µm multimode glass fibre cables.
Which fieldbus protocols are compatible with this repeater?
The module is compatible with PROFIBUS DP, Modbus RTU, and R. STAHL ServiceBus networks operating at baud rates between 9.6 kbit/s and 1.5 Mbit/s.
What connectors are used for electrical and optical lines?
Electrical RS-485 connections use a standard 9-pin female SUB-D connector. Optical links utilize dual ST (BFOC/2.5) socket connectors for transmit and receive paths.
What does a solid red ERR LED indicate?
A solid red ERR LED indicates an error on the optical fibre link, such as missing optical input power or a broken glass fibre cable.
Take advantage of our exchange formula
A defective product does not have to be worthless. At ABC Industrial Parts, you can hand in defective products and immediately benefit from a discount on your new purchase. This is a smart way to save money while contributing to a circular economy.
Play it safe with our warranty conditions
Industrial plants prefer to keep running invariably, no matter what. Therefore, it is essential that you can rely on high-quality products and/or sustainable repairs. With our warranty conditions, you can count on certainty, whether you choose new, used or repaired products.
Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Stahl.
Product photos are for illustration purposes only and may differ from the actual product delivered.
Some of the content on this page was created with the help of AI. While we strive to provide accurate and up-to-date information, errors may occur.