Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | DSDI 110A |
| Order Code (Part Number) | 57160001-AAA |
| Manufacturer | ABB |
| Origin | Sweden |
| Product Type | Digital Input Board (I/O Module) |
| I/O Family | ABB S100 I/O |
| Compatible Systems | Advant OCS, Advant Master, MasterPiece 200/2001 |
| Number of Input Channels | 32 (4 groups × 8 channels) |
| Input Voltage | 24 VDC |
| Channel Isolation | Opto-isolated; 500 VAC isolation voltage |
| Event Detection Mode | Cyclic scanning and interrupt-driven capture |
| Single-Channel Input Current | ≈ 5 mA |
| Signal Compatibility | 24 VDC wet contact; passive dry contact; proximity switches; valve feedback |
| Field Supply Range | 12–48 VDC recognizable high/low levels |
| Logic Power | 5 VDC from S100 backplane bus |
| Diagnostics | RUN/FAULT LEDs, per-group channel indicators, open-circuit/short-circuit reporting |
| Dimensions (L×H×W) | 216 × 18 × 225 mm |
| Net Weight | 0.34 kg |
| Mounting Method | Plug-in to S100 I/O rack slot |
| Operating Temperature | -20°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Humidity | 5% to 95% RH, non-condensing |
| Protection | PCB conformal coating (three-proof) |
| Certifications | CE; RoHS exempt per 2011/65/EU Art. 2(4)(c)(e)(f)(j) |
| WEEE Category | 5 – Small Equipment |
| HS Code | 85389091 / 85389099 |
| Lifecycle Status | Legacy spare part; available as new-surplus / refurbished |
Main Features and Advantages
High-density 32-channel signal acquisition:The ABB DSDI 110A 57160001-AAA packs 32 independent digital input channels into a single slim S100 board profile, delivering exceptional I/O density that minimizes rack space, reduces panel footprint, and simplifies system architecture. The 4-groups × 8-channels arrangement provides logical signal grouping for organized field wiring, enabling maintenance teams to quickly trace and troubleshoot field loops. For legacy DCS installations requiring hundreds or thousands of discrete input points, the ABB DSDI 110A 57160001-AAA offers the most space-efficient and electrically robust method of expanding digital input capacity without compromising signal integrity.Full opto-isolation for superior noise immunity:Every channel on the ABB DSDI 110A 57160001-AAA is equipped with opto-isolated input circuitry providing 500 VAC isolation voltage, electrically separating field-side transients from the sensitive backplane logic. This galvanic isolation protects the S100 rack controller from voltage spikes, ground loops, and the intense electromagnetic interference generated by variable-frequency drives, high-power motor starters, and switching equipment commonly found in power plant turbine halls and metallurgical process areas. With the ABB DSDI 110A 57160001-AAA, plants eliminate false-trip events caused by electrical noise coupling — a persistent problem with non-isolated generic DI modules that can trigger cascading unnecessary shutdowns.Dual-mode event detection for deterministic response:The ABB DSDI 110A 57160001-AAA uniquely supports both continuous cyclic scanning and hardware interrupt-driven event capture. In scanning mode, all 32 channels are sampled in synchronization with the controller task execution interval, providing consistent state polling for routine status monitoring. In interrupt mode, a designated field contact state change immediately triggers a backplane interrupt, eliminating controller polling latency for time-critical process events and enabling high-resolution Sequence-of-Events (SOE) timestamping. This dual capability makes the ABB DSDI 110A 57160001-AAA equally suitable for slow-status monitoring and microsecond-critical protection annunciation within the same module.Industrial robustness and diagnostics:The ABB DSDI 110A 57160001-AAA is built to ABB’s exacting industrial standards, featuring a conformal-coated PCB that resists corrosion, humidity, and contaminant ingress in the harshest process environments. Onboard RUN and FAULT status LEDs, combined with per-group channel indicators and board-level open-circuit/short-circuit diagnostic reporting, give maintenance personnel at-a-glance visibility into both module health and field-loop integrity. The ABB DSDI 110A 57160001-AAA operates reliably across a -20°C to +55°C ambient range, withstanding the thermal cycling, vibration, and electrical noise of power plant boiler decks, paper machine drive rooms, and steel mill process areas.Seamless legacy system compatibility:As a genuine ABB Sweden original component, the ABB DSDI 110A 57160001-AAA maintains full consistency with existing S100 I/O structures, signal logic, and engineering configurations. This means that system expansion or fault replacement requires no significant adjustment to original control logic — a critical advantage for maintenance teams managing decades-old DCS installations. Whether for fault replacement or system expansion, as long as the model matches, the ABB DSDI 110A 57160001-AAA can be directly installed, dramatically reducing on-site debugging time and engineering dependency. In continuously operating industrial scenarios, this “low modification cost” characteristic is often more valuable than any single performance metric.
