| ??? 11/23/04 07:10 Read: times |
#81747 - Induced noise Responding to: ???'s previous message |
We all know the AC drives are noisy beasts - I'm assuming the motor cable is heavily shielded - either in steel conduit or with a braided screen. The cables should be routed away from your instrumentation signals. The other thing I could suggest is earthing - your nice earth wire looks like an inductor - copper strap is recommended here. Try using an oscilloscope with the earth wire of the probe looped to the probe. Crank up the vertical gain and go sniffing around wires with this crude rf probe to see where the noise is happening. |
| Topic | Author | Date |
| AC drive induced noise | 01/01/70 00:00 | |
| is Drive connected through Choke ? | 01/01/70 00:00 | |
| Chokes | 01/01/70 00:00 | |
| DC-offset due to isolation technique | 01/01/70 00:00 | |
| DC Offset issue - Kai | 01/01/70 00:00 | |
| RE: DC Offset issue - Kai | 01/01/70 00:00 | |
| Will revert back.. Kai | 01/01/70 00:00 | |
| Induced noise | 01/01/70 00:00 | |
| Loop in loop ... Russell | 01/01/70 00:00 | |
| Induced noise | 01/01/70 00:00 | |
| Loop the ground lead. | 01/01/70 00:00 | |
| Hey! Who stole my probe! | 01/01/70 00:00 | |
| Field Probe. | 01/01/70 00:00 | |
| Field probe construction | 01/01/70 00:00 | |
| semi-rigid ? | 01/01/70 00:00 | |
| Pricey ... | 01/01/70 00:00 | |
Thanks | 01/01/70 00:00 | |
| Portfolio of Mr Keith Armstrong | 01/01/70 00:00 |