Single-ended & differential type analog I/O cards
Single-ended & differential type analog I/O cards
(OP)
I have a basic doubt:
1) What is the advantage of taking differential type analog I/O cards?
2) Does using differential type I/O cards necessarily ensure channel-to-channel isolation?
1) What is the advantage of taking differential type analog I/O cards?
2) Does using differential type I/O cards necessarily ensure channel-to-channel isolation?





RE: Single-ended & differential type analog I/O cards
1. Differential inputs allow you to achieve a limited isolation channel to channel. On most cards this is limited to about 30 V. If you have a greater voltage then that between channels, then you must use an optical isolation on the signal.
2. Again you achieve isolation to a limited degree.
RE: Single-ended & differential type analog I/O cards
RE: Single-ended & differential type analog I/O cards
RE: Single-ended & differential type analog I/O cards
If you can use some type of industrial IP network between your instruments and your PLC, you can eliminate 99% of your noise problems in addition to having complete remote access to the instrument for monitoring failures, recalibrations and a wealth of other data.