The 9471 series digital input module for Zone 2 has 16 channels for operating with active 0/24 V voltage signals. Channels 14 and 15 can also be configured for frequency measurements or as a pulse counter for frequencies of up to 20 kHz. The inputs have a common earth.
- Sixteen channels for active 0/24 V signals – can also be used for frequencies
- Ex nA inputs
- module in Zone 2 can be hot swapped