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Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6ES5470-8MC11 |
| Manufacturer | Siemens |
| Product Type | Analog Output Module |
| Series | SIMATIC S5 (Compact, Narrow Rack Design) |
| Compatibility | S5-90U, S5-95U, S5-100U, ET100U, ET200U |
| Output Channels | 2 |
| Output Signal | 4-20mA, 2-Wire Current Loop |
| Digital Resolution | 11 Bit + Sign (Full Scale: 2048 Units) |
| Conversion Time | 0 → 100% max 0.15 ms |
| Electrical Isolation | Floating (Output-to-ground isolated, VDE 0160 class) |
| External Supply Voltage | 24V DC (20-30V DC range, including ripple) |
| External Supply Current (L+) | Approx. 130 mA |
| Backplane Power Consumption | Approx. 3.8 W |
| Minimum Load Resistance | 300 Ω (ensures loop voltage margin) |
| Short-Circuit Protection | Electronic, self-resetting per channel |
| Basic Error (Accuracy) | ±0.3% FS |
| Operating Error (Accuracy) | ±0.6% FS (0-60°C) |
| Maximum Shielded Cable Length | 200 m |
| Front Connector | 20-pin |
| Weight | Approx. 0.22 kg |
Main Features and Advantages
The 6ES5470-8MC11 offers a compelling combination of compact design and precise current output capability. Its most prominent feature is the provision of 2 floating 4-20mA output channels in a narrow form factor, making it an exceptionally efficient solution for space-constrained control cabinets. The compact form factor of the 6ES5470-8MC11 allows for significant cabinet space savings, reducing the overall footprint of the control system. This high-density design is particularly valuable in retrofitting projects or when expanding the I/O capacity of existing S5 narrow rack systems .
Superior signal quality and reliability are key advantages of the 6ES5470-8MC11. The module supports 4-20mA two-wire current loop outputs, a standard in industrial process control, accommodating a wide variety of field devices including valve positioners and electrical converters . The 11-bit plus sign resolution ensures accurate data conversion, while the floating isolation between the field signals and the backplane bus provides robust protection against electrical noise and ground loops common in industrial environments . This is critical for maintaining signal integrity and preventing output errors that could lead to process upsets.
The 6ES5470-8MC11 also excels in system integration and protection features. Its design includes electronic short-circuit protection on each channel, which is self-resetting, guarding against wiring errors and overload conditions . The module is programmed using standard STEP 5 analog output instructions (FB 2 / FC 2), simplifying configuration and reducing engineering time . However, users should be aware that the 6ES5470-8MC11 is a legacy component that has been discontinued without replacement, so careful verification of the product suffix is critical, as different suffixes correspond to entirely different output ranges and are not interchangeable .
