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IoT2020 Power Consumption & Shutdown Issue

Dear Santiago,

Thank you for reaching out to Siemens Self Support. I understand you're experiencing shutdowns with your IoT2020, potentially due to power distribution concerns despite seemingly staying within the 10W limit.

Regarding the power distribution chart in the iot2000_operating_instructions_e_en-US, the values presented are strict limits, not guidelines. Exceeding the specified power limits on any individual port (USB, PCI-e, GPIO) can trigger a shutdown, even if the total consumption is under 10W.

Your setup includes a USB WiFi adapter (unknown consumption), a GPIO sensor (0.5W), and a PCI-e SIM adapter (2W). The PCI-e slot has a strict 7W limit. While your total is 6W, the PCI-e adapter alone is close to that limit, and the USB WiFi adapter's consumption could easily push the USB port beyond its limit (typically 2.5W).

Recommendation:

• Identify the power consumption of your USB WiFi adapter. Use a USB power meter if possible.
• Ensure the WiFi adapter's consumption, added to the PCI-e adapter’s 2W, doesn't exceed the total available power, and that individual port limits aren't breached.
• Consider a lower-power WiFi adapter if your current one draws significant power.

For more detailed information, please refer to the official documentation: IoT2000 Operating Instructions.

Please provide the WiFi adapter’s power consumption if you have it, and I’ll be happy to assist further.

Best regards,
Siemens Self Support

IoT 2020 Analog Input Current Limits

You're right to be cautious about overloading the IoT 2020's analog inputs! The IoT 2020's 5V input can handle a maximum current of 2mA per channel, and a total of 10mA across all channels (when using the 5V setting). Exceeding these limits can damage the device.

Here's a breakdown and further resources:

• Maximum per Channel: 2mA
• Total Maximum (all channels): 10mA

Refer to the official Siemens documentation for detailed specifications:

Important Note: Always use appropriate current limiting resistors in your sensor circuits to ensure you stay within these limits.