ABB DSDX452 5716075‑P Remote Digital I/O Basic Unit

Technical Specifications

Model: DSDX452

Part Number: 5716075‑P

Brand: ABB

Product Type: Remote digital I/O basic unit

Digital Input Channels: 20‑channel, 24V DC dry/wet contact

Digital Output Channels: 12‑channel relay output

Relay Contact Rating: 2.5VA, 100mA@24V DC

Communication Bus: MasterFieldbus

Max Transmission Distance: 750m

Supply Voltage: 24 V DC (±10%)

Operating Temperature: ‑40℃ ~ +70℃

Protection Class: IP20

Mounting: Cabinet base unit installation

Compatible System: ABB Advant Master, S400, 800xA DCS

Product Details

The DSDX452 5716075‑P is a remote I/O unit belonging to ABB Advant S400 series, serving as critical field signal acquisition hardware for DCS process control. It realizes signal docking between on‑site binary devices and central control station, solving the signal collection requirement of distributed field points in large‑scale industrial sites.

This unit is equipped with 20‑way digital input and 12‑way relay output channels. Input terminals connect limit switches, proximity switches and button signals; relay outputs drive solenoid valves, local relays and other executing components. The contact‑isolated relay output supports 24V‑240V AC/DC load, adapting to diversified on‑site actuator specifications. It adopts MasterFieldbus fieldbus communication, supporting long‑distance transmission up to 750 meters, which greatly reduces wiring workload for geographically scattered field equipment.

Each channel is equipped with independent LED status indication. Engineers can directly judge channel working state on site, quickly locate open‑circuit, short‑circuit and abnormal signal points during daily inspection and fault troubleshooting. The module has wide‑range temperature adaptability, and can run reliably under severe temperature fluctuation environment of power plants and chemical workshops.

It matches perfectly with Advant Master and S400 control platforms and can also be integrated into 800xA DCS system for reconstruction projects. Widely used in thermal power, petrochemical, pulp‑paper and other process industries. It is practical hardware for field signal transformation, remote point expansion and old DCS station component replacement.