Description
ABB DSTS106 3BSE007287R1
Introduction to ABB DSTS106 3BSE007287R1 Digital Input Fixture Module
ABB DSTS106 3BSE007287R1 is a pure digital input clip on module in the ABB AC800M distributed control system S800 I/O architecture. It is specifically responsible for the acquisition of a large number of switch signals in remote I/O stations and has the highest channel density among pure input modules in the same series.
core positioning
This module itself does not have independent communication capabilities and must be installed on basic units (such as DSDP140B, DSDP160, etc.) or expansion racks to work, with communication and scheduling managed by the basic unit. Unlike DSTS104 (8 DI+8 DO) and DSTS105 (16 DI+16 DO), DSTS106 does not provide any output channels and is a pure “signal input” node – it centrally connects a large number of switch signals such as buttons, limit switches, relay contacts, proximity switches, etc. on site to the control system, suitable for scenarios that require large-scale digital data acquisition but have less output requirements or are undertaken by other modules.
Basic Parameters

ABB DSTS106 3BSE007287R1
Material Number: 3BSE007287R1
Model: DSTS106
Series: S800 I/O Digital Fixture Module
System: ABB AC800M DCS
Channel configuration: 32 digital inputs (DI), no output channel
Input signal type: 24V DC switch signal (dry contact/wet contact optional)
Communication interface: Modulus Bus, compatible with Profibus DP
Working voltage: 24V DC
Electrical isolation: Channel isolation ≥ 1500V, module bus isolation ≥ 1500V
Protection level: IP20, suitable for installation inside control cabinets
Working temperature: -20 ° C to+60 ° C
Storage temperature: -40 ° C to+85 ° C
Installation method: Clip on fixed to the basic unit or expansion rack, DIN rail installation, required to be used in conjunction with end connection units such as TU810, TU812, TU814, TU818, TU830, TU833, TU838, TU850, etc
Size: Approximately 102mm × 119mm × 45mm (S800 series standard size)
Weight: Approximately 0.25kg
Main functional features
32 channel high-density input: Provides 32 digital inputs, making it the pure input model with the most channels in the DSTS series fixture module. It is suitable for scenarios where a large number of switch signals need to be collected simultaneously, such as large valve status matrix acquisition, multi device start stop status monitoring, and multi-point signal aggregation in production lines.
Pure input design: No output channels, all module spaces are dedicated for input signal processing, resulting in a simpler signal path and stronger anti-interference ability. This is the core difference from DSTS104/DSSTS105- the latter needs to balance input and output, with half the number of channels.
Fixture based installation design: Adopting a clip on structure, it can be quickly fixed on the basic unit or expansion rack without the need for additional terminal blocks, simplifying the on-site installation process and reducing the risk of wiring errors. Compared with screw fixed module installation, it has higher efficiency.
Loop monitoring: supports detection of input open circuits, communication interruptions, and other abnormalities. Fault information is reported by the basic unit to the main controller, and diagnostic data can be viewed through system software for quick identification of the fault channel.
Status indication: Equipped with operation indicator lights, channel status indicator lights, and power indicator lights, it can quickly determine the working status of modules and channels on site without the need for additional diagnostic tools.
Electrical isolation: achieve ≥ 1500V electrical isolation between input channels and communication ports, effectively suppressing the impact of on-site electromagnetic interference on the control system and improving system safety.
Parameterized configuration: Supports online configuration of I/O parameters through ABB dedicated industrial control software, including channel filtering, etc. The configuration takes effect in real time, reducing downtime for debugging.
Hot plug support: Supports online hot plug replacement, maintenance can be completed without cutting off the power supply of the I/O station system, reducing the risk of downtime.
Start self check: Automatically check the electrical ID of the module when powered on, and do not enter the running state when it does not match the configuration, to prevent control abnormalities caused by mismatches.
Comparison with products in the same series
DSTS104 (3BSE007285R1) is an 8 DI+8 DO digital fixture module with the least number of channels, suitable for small-scale acquisition and driving. DSTS105 (3BSE007286R1) is a 16 DI+16 DO digital fixture module with doubled channel count and balanced input and output. The core advantage of DSTS106 lies in its “32 channel pure digital input”, with a channel density twice that of DSTS105 input channels. It is irreplaceable in scenarios that require large-scale switch quantity acquisition and output undertaken by other modules (such as DSTD108, DSTD150A, etc.). DSTD108 (57160001-ABD/1) is a 16 DI+16 DO digital connection unit, but it needs to be attached to the basic unit and does not use fixture installation. DSTS106 has significant advantages in scenarios that balance channel density, installation convenience, and pure input positioning.
Typical application scenarios
Power industry: Collecting a large number of switch status data for auxiliary equipment of generator sets, such as summarizing the operation/stop/fault signals of multiple feedwater pumps, fans, and coal mills.
Chemical industry: A large number of valve switch signals are collected in the reactor and storage tank areas, and safety interlock input signals are centrally connected.
Metallurgical industry: remote I/O station for large-scale digital signal acquisition of equipment such as continuous casting machines and rolling mills.
Water treatment: monitoring the status of multiple valves in the pump station and collecting the status of multiple devices in the dosing system.
Manufacturing industry: Multi equipment status monitoring of production lines, multi-point sorting, and summary of conveyor line status signals.


