The ABB NTU-7T1, also cataloged under manufacturing part number SM9-3055.054.00, operates as a dedicated hardware component for high-density binary signal acquisition and terminal distribution within Bailey INFI 90 and Net 90 distributed control system (DCS) architectures.
Hardware Specifications
Parameter
Specification
Model
NTU-7T1
Part Number
SM9-3055.054.00
Brand
ABB Bailey
Origin
United States
Product Type
DCS Module/Board/Rack
System Compatibility
INFI 90 / Net 90 Process Management Platforms
Total Input Capacity
32 Binary Channels
Field Signal Compatibility
Dry Contact (Isolated, unpowered switch state monitoring)
Nominal Loop Voltage
24 VDC
Operating Voltage Window
18 to 30 VDC
Certification Standard
CE Compliant
Physical Dimensions
110 mm x 80 mm x 30 mm
Net Module Weight
0.82 kg (1.81 lbs)
Process Instrumentation and Channel-to-Channel Isolation
The NTU-7T1 acts as the primary physical termination barrier between physical plant sensors and the high-speed processing logic of the DCS rack. To monitor 32 binary inputs concurrently, the unit routes the external field wires through an integrated circuit trace matrix optimized for dry contact wetting voltage distribution. The hardware utilizes channel-to-channel isolation networks that isolate each of the 32 input pathways from the adjacent signal lanes and internal processing chips. This decoupling blocks high-voltage surges, cross-channel leakage current, and inductive signal distortions from penetrating the INFI 90 system bus, ensuring complete signal data integrity across crowded cable ducts.
