There are still some products that have not been listed yet. For more information, please contact us. If the product model does not match the displayed picture, the actual model shall prevail. Please consult us for specific product images; We will arrange for the warehouse to take photos for confirmation. We have 76 shared warehouses worldwide, so it may take several hours to accurately respond to your message. We deeply apologize for any inconvenience caused to you. Of course, we will process your inquiry as soon as possible.

Developed by ABB for Symphony Plus DCS platform, DI04 is industrial-grade 16-channel isolated digital input module under SD I/O series, designed to receive 48VDC discrete field signals in process automation projects. Every input channel adopts independent channel-to-channel galvanic isolation structure with 1500VAC isolation rating, effectively blocking ground loop surge and cross-channel interference to protect backplane and main control unit. Users can customize channel debounce time from 0~255ms via FC221 & FC224 control function codes to filter field mechanical switch bounce noise, supporting both sinking and sourcing input current mode to match diversified field sensor wiring. Front panel equipped with independent LED indicator for each channel to display real-time input status for fast on-site troubleshooting, plus built-in mini-USB diagnostic port for module parameter download, firmware upgrade and fault inspection. With strict wide-temperature industrial design and IP20 protection grade, DI04 runs steadily in harsh factory workshop, power plant and chemical site, becomes standard spare component for new Symphony Plus project configuration and old DCS system overhaul replacement.

• Thermal & Hydropower Industry: Boiler auxiliary equipment switch feedback, turbine auxiliary interlock signal collection, substation auxiliary equipment status monitoring for Symphony Plus DCS.

• Petrochemical & Refinery: Pipeline valve position feedback, pump running/stop status collection, safety interlock switch signal acquisition for refining production control system.

• Metallurgy & Cement Plant: Furnace door limit switch, conveyor equipment fault signal, production line interlock discrete signal monitoring.

• Water Treatment Plant: Pump running feedback, valve switch status, tank high/low level limit switch signal collection for sewage & feedwater automation.

• Pulp & Paper, Chemical Fertilizer: Old ABB Symphony DCS upgrade transformation and spare parts replacement project.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.