Reaction in the Event of a Fault

If the device detects a fault on a digital input, the user program processes a low level in accordance with the de-energized to trip principle. The device activates the FAULT LED. In addition to the channel signal value, the user program must also consider the corresponding error code. The error code allows the user to configure additional fault reactions in the user program.

Company Information

Online Union Trade Co., Ltd is located in the beautiful coastal city - Xiamen. Is a company with many years of professional production of large system parts (distributed control system, programmable controller, redundant fault-tolerant control system, robot control system, large servo control system), professional sales of the world famous brand SIEMENS, ABB, DCS system parts, industrial automation as the main business. It is a national scientific research and development center integrating scientific research, technological transformation and engineering services. Industry and trade. We sincerely hope to cooperate with you in product sales, engineering projects, system development and other aspects. We have a mature international procurement network, with long-term partners in Germany, Finland, the United States, Japan, Taiwan, Hong Kong and other places, and extensive long-term contract relationships with many manufacturers and component suppliers. Many equipment and spare parts are directly purchased from the origin, with stable supply and competitive price.

Best Quality Assurance

1. High quality

2. Prompt delivery

3. We supply a large number of branded parts.

4. We have experienced staff and a wide range of testing equipment.

5. There's a lot of stock.

6. We only provide original new items, 100% ensure the best quality!

Our Supply Range

(1) SIEMENS  S7-300. S7-400 PLC &  HMI 6AV

(2) Allen Bradley 1747, 1746, 1762,1766,1769,1756 Series PLC & HMI

(3) Schneider Quantum 140 series

(4) ABB Inverter ( ACS880)

(5) Mitsubishi PLC & Inverter

(6) Honeywell FSC series, Experion PKS, TDC 2000, TDC 3000

(7) Bently Nevada 3500/3300 monitor,cable

(8) GE Fanuc 90-30 series, 90-70 series

If you have any further questions, please feel free to contact us by

Sales Manager: Ricco

Email: Ricco@3splc.com

Mobile: +86 15260566922 (also WeChat)

Skype/Whatsapp: +86 15260566922

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