System 800xA offers flexible and modular I/O solutions through fieldbus technologies and hardwired I/O systems like S800 and S900. The system is now enhanced with Select I/O that allows to condition each signal coming from the field individually. Select I/O is Ethernet connected and consist of single channel granular Signal Conditioning Modules (SCM).

AIS810 Analog Input Signal Conditioning Module for 2/4-wire devices. 16 bit. HART communication.

Features and benefits

• Analog input for 2-wire or external powered 4-wire field devices
• Signal range: 4...20 mA and 0...20 mA
• Can be used in hazardous areas
• Transmitter power current limited to 30 mA
• 16 bit A/D converter resolution
• Channel to channel galvanic isolation
• Hardware filter, rise time 1ms
• Software filter configurable through parameters
• Protected against wrong wiring
• Configurable software filter

• Diagnostics:
– Loop supervision (open circuit and short circuit)
– Hardware error supervision
– Communication supervision
– Device malfunction low, underrange, overrange and device malfunction high detection
– Internal power supervision

• Support of HART field devices (up to HART application layer revision7)
– HART Pass-Through
– Cyclic read of up to two HART Device Variables
– HART Device Validation

• Single loop granularity - each SCM handles a single channel
• Supports hot swap
• Mechanical locking slider which turns off field device power and/or output before removal
• Field disconnect function which can galvanically separate the field loop wiring from the SCM during commissioning and maintenance
• All SCMs have electronic current limitation
• Mechanical keying to prevent insertion of wrong module type after commissioning
• 24V DC powered through Modulebus
• Configurable through parameters
• LED indicators on the SCM indicate the operational state of the module.