Product details

Technical information :

High snubberless turn-off rating

Optimized for medium frequency (<l kHz) and low turn-off losses

High reliability

High electromagnetic immunity

Simple control interface with status feedbackAC or DC supply voltage

Suitable for series connection (contact factory)

The ABB is a miniature circuit breaker designed for the protection of electrical circuits against overload and short circuit currents. It is a 1-pole breaker with a rated voltage of 230/400V AC and a rated current of 6A. The breaker is equipped with a trip-free mechanism that ensures it will not remain closed if the contacts are welded together due to a fault.

What is an operator keyboard?

 A man-machine interface of the operation station of the distributed control system, which is used by the operator to select various operation and monitoring screens, change some control parameters, alarm parameters and other operation keys to monitor and control the entire production process.

PLC and DCS system in common

①DCS: Distributed control systems (distributedcontrol systems).

PLC: Programmable Logic Controller (PLC). Both have different emphasis and are advanced.

②DCS focuses more on the process control field (such as chemical, smelting, pharmaceutical, etc.) is mainly the monitoring and adjustment control of some field parameters, while PLC focuses on logic control (machining class). Of course, the current PLC can also deal with process control problems well, but there is no DCS professional.

(3) If the simulation quantity is greater than 100 points, DCS is generally used; If the analog quantity is within 100 points, PLC is generally used.

DCS is a "distributed control system", and PLC is just a control "device", the two are the difference between "system" and "device". The system can realize the functions and coordination of any device, and the PLC device only realizes the functions of this unit.

The DCS network is the central nervous system of the whole system, DCS system usually uses the international standard protocol TCP/IP. It is a safe and reliable double redundancy high-speed communication network, the system is more extensible and open. Because the PLC basically works for a single small system, when communicating with other PLC or host computer, the network form used is basically a single network structure, and the network protocol is often inconsistent with international standards.

All I/O modules of DCS system are equipped with CPU, which can realize the acquisition and output signal quality judgment and scalar transformation, fault charging, random replacement. The PLC module is just a simple electrical converter, there is no intelligent chip, and the corresponding unit is all paralyzed after the failure.

ABB series of products