ABB Bailey D33025 INFI90 Terminal Unit Baseplate Complete Information
I. Basic Identification Information
Model: D33025
Brand: ABB Bailey (formerly Bailey)
System: INFI 90 / Symphony DCS Distributed Control System
Category: I/O Terminal Base / Terminal Unit Baseplate (Terminal Base)
Position: Complementary to **DTCC901B (61430001-FU)** digital terminal board dedicated mounting backplate. The two are used together to form a DI/DO field wiring unit.
Core Functions
Mechanical Support: DIN rail cabinet fixed base, clamping DTCC901B terminal board, shock-resistant and anti-loosening, suitable for power plants / chemical plants with high vibration cabinet environments;
Bus Conversion: Internal integrated signal interconnection copper foil, achieving signal direct connection between I/O cards in the IEMMU cage ↔ DTCC901B terminal board;
Power Supply Distribution: Dividing 24VDC system power supply to the digital terminal circuit, with current limiting wiring;
Grounding Convergence: Unified shielding ground and signal ground wiring bus, reducing switch quantity EMI interference;
Expansion Interface: Reserved NKTU series flat cable interface, supporting remote terminal cabinet extension wiring.
Complete Set of Accessories (Required Pair)
D33025 Baseplate (Installation Base)
DTCC901B 61430001-FU Digital I/O Terminal Unit (with fuse, terminal block)
Compatible with upper I/O cards (inserted into IEMMU cage)
IMDSI02 16-channel Digital Input Card
IMDSO04 16-channel Digital Output Card
IMDSM04 Multi-channel Mixed Switch Quantum Module
Accessories
NKTU01-10/15/20 Terminal Flat Connection Cables, connecting D33025 baseplate to control module backplate
Hardware Structure and Electrical Specifications
Installation Method: Standard 35mm DIN rail snap-in installation, can be densely arranged;
Working Voltage: DC 24V (INFI90 system standard power supply);
Channel Capacity: Each baseplate corresponds to 16 points DI/DO, matching DTCC901B channels;
Environmental Grade: Used in industrial cabinet environment, -20℃ ~ +55℃, IP20;
Material: Flame-retardant glass fiber PCB baseplate, metal locking latch, oil-resistant, dust-resistant;
Protection Design: Baseplate wiring isolation for strong and weak electricity, avoiding 220V strong electricity from entering the control circuit.
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