| ??? 05/28/12 22:48 Modified: 05/28/12 22:50 Read: times |
#187564 - Yes and no... Responding to: ???'s previous message |
Ap said:
Kai, as per your mail above a 1M resistor paralleled with 1.1....22nF capacitor is used, although it is for long running cables , but will it be beneficial to shunt the sensors floating terminal towards metallic PE, with this scheme. This scheme can be useful when having RS485 signal lines like it's done in PROFIBUS applications. But for small analog signals this coupling between signal ground and PE can inject bad HF ground noise into the signal path as well. So, many analog sensors don't have this sort of coupling between signal ground and the metallic housing (PE) of sensor. Kai Klaas |
| Topic | Author | Date |
| Sensor installing | 01/01/70 00:00 | |
| EX question ? | 01/01/70 00:00 | |
| Manufacturer | 01/01/70 00:00 | |
| Never tested? So not certified? | 01/01/70 00:00 | |
| Is it undesirable | 01/01/70 00:00 | |
| As far as I know... | 01/01/70 00:00 | |
| No No.. | 01/01/70 00:00 | |
| I agree... | 01/01/70 00:00 | |
| safety | 01/01/70 00:00 | |
| Yes and no... | 01/01/70 00:00 | |
| Looking for Pre-Boxed Solutions | 01/01/70 00:00 | |
| pre-boxed solutions .. no | 01/01/70 00:00 | |
| But there's more to do... | 01/01/70 00:00 | |
| not familiar with 'EX' | 01/01/70 00:00 | |
Yes | 01/01/70 00:00 |