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Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6ES5470-7LB11 |
| Manufacturer | Siemens |
| Product Type | Analog Output Module |
| Product Series | SIMATIC S5 470 |
| Output Channels | 2 (floating, isolated from ground) |
| Output Range | ±10 V (voltage-type only) |
| Resolution | 12-bit (binary, left-justified) |
| Load Impedance (voltage output) | ≥ 2 kΩ |
| Output Drive Current | Max. ±5 mA per channel |
| Settling Time (full-scale step) | < 1 ms typical |
| Accuracy (at 25°C) | ±0.5% of full scale |
| Accuracy (full temperature range) | ±1% of full scale |
| Short-Circuit Protection | Output stage short-term tolerant |
| Compatible PLC Racks | S5-90U / -95U / -100U, ET 100U, ET 200U |
| Slot Requirement | 1 x standard I/O slot |
| Weight | Approx. 0.25 – 0.49 kg |
| Operating Temperature | 0°C to 60°C (horizontal mounting) |
| Shielding | Recommended for cable lengths > 200 m |
Main Features and Advantages
Floating Output Stage: The 6ES5470-7LB11 employs a floating output design where each channel is isolated from the system ground, effectively preventing ground-loop currents that can degrade signal accuracy. This architectural choice distinguishes the 6ES5470-7LB11 from non-isolated alternatives, making it particularly suitable for installations where multiple equipment grounds may have potential differences. The floating configuration of the 6ES5470-7LB11 ensures that the ±10 V output signal maintains its integrity even in complex industrial wiring environments .
Precision Voltage Output: Designed exclusively for ±10 V voltage output, the 6ES5470-7LB11 delivers precise control signals with 12-bit resolution that meet the requirements of most analog actuators in S5-based systems. The output stage of the 6ES5470-7LB11 is capable of driving loads down to 2 kΩ, providing sufficient current for DC drive speed references, proportional valve commands, and recorder inputs . The settling time of under 1 ms for full-scale steps ensures rapid response to setpoint changes, maintaining dynamic control performance .
Optimized for S5-100U and ET 200U: The 6ES5470-7LB11 is specifically dimensioned for the smaller S5 racks, occupying a single I/O slot and eliminating the need for additional mounting considerations . This seamless compatibility makes the 6ES5470-7LB11 an ideal choice for distributed I/O applications where analog output points are located near actuators, reducing cable runs and associated signal degradation. The 6ES5470-7LB11 complements its companion input module, the 6ES5464-8MC11, in forming a complete analog signal chain for the S5 platform .
Short-Circuit Tolerance: The output stage of the 6ES5470-7LB11 is designed with short-term tolerance against output short circuits, protecting the module from damage during commissioning or wiring faults . While not rated for indefinite short-circuit operation, this feature provides valuable protection during maintenance activities and reduces the risk of module failure due to accidental contact between output terminals.
