Description
Introduction to ABB DSTC190 57520001-ER Communication Connection Unit
ABB DSTC190 57520001-ER is a Communication Connection Unit for Asynchronous Communication Interface in the ABB Advance Master/Symphony Plus distributed control system. It serves as a communication bridge between the controller and remote I/O modules, operation panels, and other network nodes in the DCS architecture, and is the core communication component for high-speed and reliable data exchange between the system and external devices.
core positioning
DSTC190 57520001-ER ABB CONNECTION UNIT
The module itself does not collect on-site signals, nor does it directly drive the actuator. Instead, it exists as a “communication translator” – converting control instructions issued by the main controller into a format recognizable by remote devices, and transmitting the on-site data collected by remote devices back to the main controller. It is designed specifically for asynchronous serial communication and is suitable for distributed control scenarios that require data exchange with remote terminals, operator stations, modems, or other external devices through serial ports.
Basic Parameters
Material number: 57520001-ER (compatible with 57520001-ER/1, IN5752-1001-BP/01)
Model: DSTC190
Type: Asynchronous Communication Interface Connection Unit
Communication interface: Asynchronous serial communication (RS-232/RS-485)
Working voltage: 24V DC
Communication speed: 1200 bps to 115200 bps (configurable)
Electrical isolation: ≥ 1500V isolation between the controller side and the communication port side
Size: Approximately 178mm × 95mm × 96mm
Weight: Approximately 0.1kg
Working temperature: -20 ° C to+60 ° C
Storage temperature: -40 ° C to+85 ° C
Relative humidity: 5% to 95% (non condensing)
Protection level: IP20, suitable for installation inside control cabinets
Installation method: DIN rail installation/rack mounted installation
Main functional features
Asynchronous Communication Support: Designed specifically for asynchronous serial communication, it supports the RS-232/RS-485 standard and can reliably connect with external serial devices such as modems, remote terminal units (RTUs), operator stations, barcode readers, printers, etc. It is compatible with multiple industrial communication protocols.
Multi protocol compatibility: Compatible with multiple industrial standard communication protocols, facilitating integration with remote devices and upper level systems from different manufacturers, and reducing system integration complexity.
High speed data transmission: Supports a communication rate of up to 115200 bps, ensuring real-time and accurate data transmission between the controller and remote devices, meeting the real-time communication requirements of process control.
Electrical isolation: A ≥ 1500V electrical isolation is achieved between the controller side and the communication port side, effectively suppressing the impact of on-site electromagnetic interference on the control system and improving system safety and communication stability.
Status indicator: Equipped with operation indicator light, communication status indicator light, and fault indicator light, it can quickly determine the working status of the module and whether the communication link is normal on site, without the need for additional diagnostic tools.
Signal protection: Built in overvoltage protection, overcurrent protection, and interference suppression circuits can maintain stable communication in industrial environments with strong voltage fluctuations or electromagnetic interference, reducing the risk of communication interruption caused by external abnormalities.
Loop monitoring: supports the detection of communication interruptions, power outages, frame errors, and other anomalies. Fault information can be reported to the main controller through the system bus, making it easy to quickly locate communication faults.
Modular design: Supports combination with other DSTC series communication units, flexibly expands system communication capabilities, and adapts to distributed control requirements of different scales.
Hot plug support: Supports online hot plug replacement, maintenance can be completed without cutting off the system power, 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 communication abnormalities caused by mismatches.
Comparison with products in the same series
DSTC120 (57520001-A) is a synchronous communication connection unit that focuses on synchronous serial communication and is suitable for high-speed synchronous data exchange with the main controller. The core positioning of DSTC190 is “asynchronous communication interface”, specialized in handling asynchronous serial communication scenarios such as RS-232/RS-485, such as connecting remote terminals, modems, printers, and other devices. DSTC170 is another communication variant. DSTC190 is irreplaceable in scenarios that require long-distance, low-speed and reliable communication with external serial devices, and is an important supplement to synchronous communication units.
Typical application scenarios
Power industry: Serial communication between generator set auxiliary equipment and remote monitoring terminals, such as data exchange with electricity meters and protection devices.
Chemical industry: Connection between DCS system and serial peripherals such as barcode readers and label printers on site.
Water treatment: asynchronous serial data transmission between pump station and remote SCADA terminal.
Manufacturing industry: Communication link between production line control system and remote control panel, HMI terminal.
Oil and gas industry: serial communication between remote wellhead control unit and central control room.
