When the working environment of a PLC is harsh, the SIPLUS series products are required. For example, in outdoor factory buildings in northern regions, where winter temperatures are extremely low; where mechanical vibrations and shocks are strong; or where the air humidity is high, causing condensation on circuit boards; PLCs working in chemical plants with corrosive gases; or PLCs located at altitudes exceeding 2000 meters.
The SIPLUS S7-300 modules have the same functionality and technical data as the "standard" modules, but the environmental conditions they can be applied to are broader.
The SIPLUS S7-300 modules have their own unique order numbers, starting with 6AG1. (Refer to S7-300 Module Data, Chapter 1.7)
The SIPLUS S7-300 modules are not included in the hardware catalog. Please design the equipment based on the corresponding "standard" modules. (Refer to S7-300 Module Data, Chapter 1.8)
For example, the SIPLUS product order number corresponding to 6ES7 331-7KF02-0AB0 is 6AG1331-7KF02-2AB0. In hardware configuration, the order number 6AG1331-7KF02-2AB0 is not included, so when configuring, use 6ES7 331-7KF02-0AB0 as a replacement. Other SIPLUS products are similar.
The SIPLUS S7-300 is the 300 series PLC for use under extremely harsh environmental conditions which provides special needs for critical solutions.
The SIPLUS S7-300 modules can be used under extended environmental conditions compared to the "standard" S7-300 modules. The meaning of "extended environmental conditions" is:
Extended temperature range from -25°C to +60°C/70°C
Condensation is allowed
Increased tolerance for mechanical stress
The standard S7-300 series products can operate under the following environmental conditions:
| Environmental Conditions | Permit range | Notes: |
| Temperature: Horizontal mounting position: Vertical mounting position: | 0°C to 60°C 0°C to 40°C | |
| Relative Humidity: | 10% to 95% | No condensation, equivalent to IEC 61131 Part 2, Class 2 relative humidity (RH) |
| Atmospheric Pressure: | 1080 hPa to 795 hPa | Corresponding altitude: -1000m to 2000m |
| Pollutant Concentration: | SO₂: < 0.5 ppm; RH < 60%, no condensation H₂S: < 0.1 ppm; RH < 60%, no condensation | Test: 10 ppm; 4 days Test: 1 ppm; 4 days |
| ISA-S71.04 severity level G1; G2; G3 | |
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Siemens S7-300 series digital input SM321 module 6ES7321-1BL00-0AA0 Images
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