Features and benefits

• Analog input for 2-wire, 3-wire or 4-wire field devices, powered by AIS885

• Signal range: 4…20 mA

• Can be used in hazardous areas

• Certified for Functional safety

• Field power sourced from the power injection

• Short circuit proof, configurable current limit 0.1 to 1.2 A

• Transmitter power current limited to 25 mA (for 2-wire field devices; input current limitation for

SCM pin 2)

• 16 bit A/D converter resolution

• Galvanic isolation

• Protected against wrong wiring (±35 V) between all terminals

• Hardware filter, rise time 1 ms

• Software filter configurable through parameters

• Diagnostics:

– Loop supervision (open circuit and short circuit)

– Internal hardware supervision

– Communication supervision

– Device malfunction low, under range, over range and device malfunction high detection

– Internal power supervision

– Power injection supervision

• LED indicators:

– Status (S)

– Primary (P)

• 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.