Product Description
The ADM51-2 S4 is a high-reliability contact (digital) input module for Yokogawa industrial automation systems. It monitors dry contacts, limit switches, and other discrete field devices, converting physical switch states into real-time digital signals for the control system.
Designed for signal integrity, the module incorporates advanced noise filtering and optical isolation to prevent false triggering in electrically busy environments. Its slim, high-density form factor allows efficient installation in standard I/O nests, making it ideal for safety interlocks, status monitoring, and sequence control in industrial applications.
Technical Specifications
| Item | Specification |
|---|---|
| Product Model | ADM51-2 S4 |
| Manufacturer | Yokogawa Electric Corporation |
| Module Type | Contact Input / Digital Input |
| Input Density | 16 channels |
| Supported Signal | Dry contact (voltage-free) / discrete digital signals |
| Status Indication | Real-time logic state detection |
| Signal Protection | Optical isolation, surge suppression |
| Hardware Revision | S4 (latest high-stability version) |
| Dimensions (H × W × D) | 20.3 cm × 2.5 cm × 12.7 cm |
| Weight | 0.2 kg |
Application Scenarios
-
Switch Monitoring
Tracking open/closed states of manual valves, circuit breakers, and emergency stop buttons. -
Sequence Control
Providing feedback from mechanical limit switches for automated production lines. -
Alarm Systems
Interfacing with fire, smoke, or pressure switches to trigger safety protocols.
Product FAQ
Q: Does the ADM51-2 S4 require external wetting voltage for contacts?
A: No. The module is designed for dry (voltage-free) contacts, providing internal sensing voltage. Verify the specific rack’s power configuration before wiring.
Q: What distinguishes the S4 revision from earlier versions?
A: The S4 revision features improved component longevity, enhanced EMI resistance, and overall hardware stability compared to earlier S1 or S2 versions.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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