Description
Description
The Siemens 6ES5721-0BC00 is a high-reliability, 50-pin industrial interconnect cable designed specifically for the Simatic S5 automation series. This 2-meter bus cable serves as a critical link between central controllers (CC) and remote expansion units (EU), facilitating seamless data exchange in distributed I/O architectures. Engineered for demanding industrial environments, this cable ensures deterministic communication and signal integrity across split-rack configurations.
Features
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High-Density Connectivity: Features a standardized 50-pin interface for parallel data, address, and control signal transmission.
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Robust Shielding: Multi-layer shielding, including aluminum foil and tinned copper braid, provides superior protection against electromagnetic interference (EMI) and common-mode noise.
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Industrial-Grade Construction: Designed with rugged connector housings and integrated strain relief to endure mechanical stress and continuous vibration in heavy-duty applications.
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Signal Synchronization: Internal low-skew conductor geometry ensures precise timing synchronization between the main processor and remote chassis.
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Secure Installation: Equipped with manual retention screws to maintain gas-tight, reliable connections in high-vibration environments.
Applications
This cable is essential for expanding Simatic S5 control systems in large-scale industrial facilities, including thermal power generation, mineral processing, and petrochemical refineries. It is primarily used to bridge the gap between central racks and decentralized expansion units, supporting total system reach of up to 600 meters when integrated with appropriate line amplifiers.
Technical Specifications
| Model |
6ES5721-0BC00 |
| Brand |
Siemens Simatic S5 |
| Cable Length |
2 Meters |
| Connector Type |
50-Pin Male-to-Female |
| Operating Temperature |
0 to 60 deg C |
| Power Consumption |
Passive (0 W) |
| Max System Reach |
600 meters (with active amplification) |
Installation Guidelines
- Ensure the PLC system is powered down before connecting or disconnecting the cable to avoid electrical shorts or signal spikes.
- Route the cable away from high-voltage power lines and heavy-duty frequency drives to minimize potential EMI exposure.
- Secure the connector retention screws firmly to ensure a gas-tight connection and prevent intermittent signal loss due to machine vibration.
- Avoid bending the cable beyond its minimum bend radius to prevent internal conductor damage or insulation stress.
- Verify that the cable length and total bus segment length do not exceed the specified limits for the S5 expansion architecture.
FAQ
Is this cable compatible with other Simatic series?
The 6ES5721-0BC00 is specifically engineered for the Simatic S5 architecture and its associated expansion modules. It is not intended for use with S7 or later generation systems.
Does this cable require external power?
No, this is a passive interconnect cable. It transmits signals between backplanes and does not consume electrical power itself.
Can I daisy-chain these cables?
The cable is designed for point-to-point connections between a central unit and an expansion unit. System-wide expansion limits must be strictly observed according to your specific S5 backplane configuration.
