The Siemens 6GK1503-2CB00 PROFIBUS OLM/G11 V4.0 optical link module converts electrical PROFIBUS signals into optical signals for fiber-optic transmission. This device extends network distances and provides immunity to electromagnetic interference. The module supports ring, star, and bus topologies for flexible network design.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Optical link module (OLM) |
| Version | G11 V4.0 |
| Transmission Rate | 9.6 kbps to 12 Mbps (automatic detection) |
| Electrical Interface | 1 x RS-485 (9-pin D-sub, female) |
| Optical Interfaces | 2 x BFOC (ST) for duplex fiber (transmit/receive) |
| Fiber Type | Multimode (62.5/125 µm or 50/125 µm) |
| Optical Wavelength | 660 nm (visible red light) |
| Optical Power Budget | 11 dB (typical) |
| Maximum Fiber Distance | 1.2 km (at 12 Mbps) |
| Dimensions (W x H x D) | 75 x 145 x 115 mm |
| Weight | 0.7 kg |
| Number of Internal Components | 1 x laser diode, 2 x photodiodes, 1 x microcontroller, 3 x transformers |
| Signal Delay | ≤ 5 µs (electrical to optical conversion) |
| Diagnostic LEDs | 6 x LED (power, electrical link, optical link 1/2, error) |
| Power Supply | 24V DC (18V – 30V DC) |
| Power Consumption | 4W (typical), 6W (maximum) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +80°C |
| Protection Class | IP20 |
| Mounting | DIN rail (35mm) or wall mounting |
| Approvals | CE, UL, CSA, FM |
Reliable Electrical-to-Optical Signal Conversion
The Siemens 6GK1503-2CB00 accepts electrical PROFIBUS signals through its RS-485 D-sub connector. The module then converts these signals into visible red light at 660 nm wavelength. A laser diode generates the optical output for transmission over multimode fiber. Two photodiodes receive optical signals from other network nodes.
Extended Network Distances and Topology Support
This optical link module supports PROFIBUS transmission rates from 9.6 kbps up to 12 Mbps. The module automatically detects the baud rate and adjusts its timing accordingly. Fiber-optic cables extend network distances up to 1.2 km at full 12 Mbps speed. Users can configure ring, star, or bus topologies using the two BFOC fiber ports.
Diagnostic LEDs for Rapid Troubleshooting
Six front-panel LEDs provide immediate visual feedback on module and network status. A power LED indicates proper 24V DC supply to the module. The electrical link LED shows active PROFIBUS communication at the RS-485 port. Two optical link LEDs confirm fiber connectivity on each channel. An error LED alerts operators to signal loss or excessive bit errors.
Compact DIN Rail Enclosure for Easy Installation
The module measures 75 x 145 x 115 mm and weighs only 0.7 kg for space-saving installation. Users can mount the unit on standard 35mm DIN rails or directly to a backplate. The IP20-rated housing protects internal components from dust and accidental contact. Front-accessible connectors and LEDs simplify wiring and diagnostics.
Low Power Consumption and Robust Temperature Range
The Siemens 6GK1503-2CB00 draws only 4W during normal operation and 6W at peak load. This low power consumption reduces heat buildup in control cabinets. The module operates reliably from 0°C to +60°C ambient temperatures. Storage from -40°C to +80°C ensures long shelf life before installation.
Optical Power Budget and Signal Integrity
An optical power budget of 11 dB compensates for cable attenuation and connector losses. This budget ensures reliable signal reception even with multiple splices or patch panels. The module introduces only 5 µs delay from electrical input to optical output. This minimal latency maintains real-time PROFIBUS communication integrity.
Details
| Weight | 1.2 kg |
|---|---|
| Dimensions | 50 × 290 × 217 mm |
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