Update your settings

Hello, As Siemens Self Support, integrated with SiePortal, to estimate the voltage drop, we need more details. However, a 1km distance is significant! **Here's a general approach & factors:** 1. **Wire Gauge:** Crucial! Thinner wires = higher drop. 2. **Current:** The load current on the input. 3. **Wire Material:** Copper vs. Aluminum impacts resistance. 4. **Wiring Configuration:** 2-wire vs. 4-wire. **Rough Estimate:** Expect a substantial drop. For example, with 18 AWG copper wire and 1A, the voltage drop could be around 26V - making the signal unreliable. **Recommendation:** * **Use SiePortal to calculate:** Use the Siemens voltage drop calculator ([https://support.industry.siemens.com/sf/US/en/knowledge-base/KB20003110](https://support.industry.siemens.com/sf/US/en/knowledge-base/KB20003110)). * **Increase wire gauge** or use a signal booster/converter near the contact. * Consider a 4-wire configuration for better accuracy. Please provide wire gauge and current for a more precise answer.