Introduction
The ABB DSTC 120 57520001‑A Connection Unit for Asynchronous Communication Interface is a robust industrial interface module engineered to centralize and organize asynchronous communication signals between field devices and controller systems. Designed to support diverse networked automation architectures, this connection unit facilitates reliable data exchange over asynchronous link layers, improving system responsiveness and easing integration challenges. Built with industrial durability and electrical integrity in mind, the DSTC 120 enhances connectivity in complex control environments where communication clarity and signal reliability matter.
Technical Specifications
| Specification | Details |
|---|---|
| Model | DSTC 120 57520001‑A |
| Module Type | Connection Unit for Asynchronous Communication Interface |
| Primary Function | Structured interface for asynchronous communication signals |
| Supported Communication | Asynchronous serial, fieldbus bridging, peripheral bus signals (system dependent) |
| Signal Types Supported | RS‑232/RS‑485 level signals, discrete control lines, network handshake signals |
| Voltage Reference | 24 V DC logic reference (system provided) |
| Terminal Interface | Multi‑point terminal blocks with clear labeling |
| Communication Bus Interface | Backplane or harness connection to controller network |
| Mounting Style | DIN rail, panel, or rack mount (application dependent) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity Tolerance | 5 %–95 % non‑condensing |
| Protection Rating | IP20 (for internal enclosure use) |
| Dimensions (HxWxD) | Approx. 155 mm × 120 mm × 35 mm |
| Weight | Approx. 0.52 kg (1.15 lb) |
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