Description

ABB DKTFM418B 3BHB015651P0001 Digital Input Terminal Base Module

Technical Specifications

• Product Model: DKTFM418B 3BHB015651P0001
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 V DC nominal, 0–30 V DC allowable logic range
• Operating Temperature: -25°C to +70°C
• Storage Temperature: -40°C to +85°C
• Response Time: 1 ms maximum signal capture delay
• Protection Class: IP20 (when fully installed within standard control cabinet enclosure)
• Accuracy Class: Industrial grade discrete signal transmission (±0.1% signal deviation)
• Output Frequency: 50 Hz maximum field switching frequency
• Rated Current Range: 0.5 A per single input channel
• Communication Interface: AC 800M backplane internal bus, screw terminal field wiring interface
• Supported Protocols: ABB AC 800M internal bus protocol, PROFIBUS DP (via paired DI modules)
• Overload Capacity: 2500 V AC galvanic isolation for surge and transient overload protection
• Dimensions: 125 mm × 75 mm × 30 mm (standard DIN rail module footprint)
• 

Product Overview

The ABB DKTFM418B 3BHB015651P0001 functions as a dedicated high-density terminal base unit engineered exclusively for ABB AC 800M DCS and PAC systems, serving as the physical and electrical bridge between field discrete sensors and DI810/DI811 digital input electronic cards. It terminates up to 16 independent digital input loops for devices including proximity switches, mechanical limit contacts, safety interlocks, and local pushbutton stations in process and manufacturing plants.

This hardware resolves core pain points in distributed I/O deployment: it implements channel-to-channel and bus-side galvanic isolation to eliminate ground loops, suppress electromagnetic interference, and shield the central controller from voltage spikes common in heavy industrial environments. Its keyed mechanical locking structure prevents incorrect module insertion during replacement, while front-mounted screw terminals streamline field wiring and reduce on-site commissioning labor hours. The split design separates field wiring from the pluggable input card, enabling hot-swap replacement of faulty electronics without disconnecting field cables or halting continuous production processes.