Type: 16-Channel Intrinsically Safe Digital Input Module
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Product description
Product Overview
The MTL 8220-DI-IS is a 16-channel intrinsically safe digital input module from the MTL 8000 series of process I/O, engineered for hazardous-area installations in oil and gas, chemical, and petrochemical plants. It safely interfaces field switches and proximity detectors located in explosive atmospheres with the control system, delivering galvanic isolation and certified intrinsic safety between field and logic circuits.
Core Specs
Channels: 16 digital inputs, single-ended
Input voltage range: 7 V to 28 V DC
Input current: below 1.2 mA (OFF) / above 2.1 mA (ON)
Output type: Open-drain output
Isolation voltage: 2500 V (input to logic)
Field device types: Proximity detectors, switches, NAMUR-style contacts
Operating temperature: -40°C to +70°C
Certifications: ATEX and IECEx for intrinsically safe applications
Highlights
Certified intrinsic safety allows direct connection of field devices in Zone 0/1 hazardous areas
High channel density reduces cabinet space and installation cost per I/O point
Robust galvanic isolation protects the control system from surges and ground loops
Wide operating temperature range suits outdoor and harsh process environments
Seamless integration with MTL 8000 remote I/O racks and field terminals
FAQ
Q: What field devices can connect to the 8220-DI-IS? A: Dry contacts, proximity detectors, and switch-type devices rated for intrinsically safe circuits.
Q: Is this module suitable for Zone 0 installations? A: Yes, when installed with certified IS field terminals and wiring per the MTL system manual.
Q: Does the module provide channel-to-channel isolation? A: The module provides galvanic isolation between field inputs and the system bus, designed for group IS circuits.
Installation Guide
De-energize the rack and confirm the hazardous-area certification schedule.
Mount the module on the MTL 8000 rack bus and seat it firmly against the connector.
Connect field wiring through the designated intrinsically safe field terminal, observing entity parameters.
Verify input voltage within the 7-28 V DC range and confirm channel LEDs indicate correct status.
Perform a loop check from each field device to the host system before commissioning.
Selection Tips
Pair with the 8623-FT-IS intrinsically safe field terminal for the correct IS wiring scheme.
Confirm the required channel count per rack position to balance density against spare capacity.
Verify gas group and temperature class requirements of the target hazardous area against the certificate.
For non-hazardous areas, a standard non-IS DI module offers a lower-cost alternative.
Answer 1: PLC DCS Pro Ltd. collaborates with over 50 countries worldwide. As a leading supplier in China, we can provide significant discounts to customers based on market demand.
Question 2: What Is The Warranty Period?
Answer 2: We offer a standard one-year warranty for all new and original items.
Question 3: What Payment Methods Do We Accept?
Answer 3: We accept 100% T/T (Telegraphic Transfer) before shipping. For items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. If you have an agent in China, please contact us for RMB transfer.
Question 4: What Shipping Methods Do We Use?
Answer 4: We primarily utilize carriers such as FedEx, DHL, UPS, BRE, etc. If you have an account with any of these carriers, you can arrange the shipping yourself. Additionally, we offer free shipping to China freight forwarders.
Question 5: What Is Our Delivery Time?
Answer 5: Typically, delivery takes around 1-3 days after receiving the advance payment. For items with a quoted lead time, delivery will occur as per the specified lead time.
Question 6: How Do We Package The Goods?
Answer 6: Our packaging process involves multiple layers of protection. Initially, the product is placed in its original box, sealed with a label. Then, we add a layer of bubble wrap to safeguard against collisions during transportation. Finally, all products are securely packed in sturdy boxes for further protection.
Question 7: How Can Customers Contact Us And Request A Quote?
Answer 7: Customers can inquire via email, WhatsApp, WeChat, Skype, or any preferred communication platform. Simply reach out to us, and we'll promptly provide a quote tailored to your needs.
Warranty Conditions
At PLC DCS Pro Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.
🛡️Coverage Details:
This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.
📝Claim Process:
To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.
🚚Shipping Assistance:
We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.
🚫Exclusions:
Unauthorized modifications, repairs, or misuse of the product.
