- 16 independently configurable analog input channels with 24-bit conversion
- Supports current, voltage, millivolt, thermocouple and 3-wire RTD signals
- Connects through Harmony termination hardware and the I/O Expander Bus
IMASI23 is ABB's universal Harmony Rack analog input module for process transmitters, voltage sources, thermocouples and RTD temperature sensors.
The module provides 16 independently configurable channels with one isolated 24-bit analog-to-digital converter per channel. Supported signals include 4 to 20 mA, 0 to 5 VDC, 1 to 5 VDC, 0 to 10 VDC, 0 to 100 mVDC, thermocouple and 3-wire RTD inputs.
IMASI23 communicates with the controller through the Harmony Rack I/O Expander Bus and connects to field wiring through the applicable termination unit and cable. Before replacement, preserve every channel type, range, sensor connection, compensation setting, module address and controller configuration.
Availability, condition, price, and shipping time for IMASI23 are confirmed during quotation.
ABB IMASI23 Harmony Rack Analog Input Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Current, voltage, thermocouple and RTD channels must follow the saved controller configuration
- Every sensor type requires the matching field wiring, range and compensation settings
- Channel records must be preserved before the original module is removed
- Field wiring lands on the approved Harmony termination hardware
- The module connects through the MMU backplane and I/O Expander Bus architecture
- Termination unit, cable and rack position must match the installed system drawing
- Record the module hardware identification before service
- Inject known signals and verify scaling, quality and alarms on every used channel
- Review ABB field-alert applicability before returning critical loops to service
- Acquisition of 4–20 mA and industrial voltage process signals
- Direct thermocouple temperature measurement in Harmony Rack systems
- RTD-based process-temperature monitoring within Symphony and Harmony control applications