The remote S900 I/O system can be installed in non-hazardous
areas or directly in Zone 1 or Zone 2 hazardous area depending on
the selected system variant. S900 I/O communicates with the
control system level using the PROFIBUS DP standard. The I/O
system can be installed directly in the field, therefore the costs for
marshalling and wiring are reduced.

The system is sturdy, error-tolerant and easy to service. Integrated
disconnection mechanisms allow replacement during operation,
meaning that there is no need to interrupt the primary voltage in
order to exchange the power supply units.
S900 I/O type N. For installation in safe (= non-hazardous) area.
AO920N Analog Output (AO4I), output signal 0/4...20 mA for
actuators.
Features and benefits
- Redundancy (Power and Communication)
- Hot Configuration in Run
- Hot Swap functionallity
- Extended Diagnostic
- Excellent configuration and diagnostics via FDT/DTM
- G3 – coating for all components
- Simplified maintenance with auto-diagnostics
- Output signal 0/4...20 mA for actuators
- Short and break detection
- Electrical isolation between output / bus and output / power
- Electrical isolation channel to channel
- 4 channels
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