The Yokogawa ADM51C-2, also cataloged as the ADM51C-2 Digital / Contact I/O Module, operates as a dedicated hardware component for discrete signal execution within Yokogawa CENTUM CS, CENTUM CS 3000, and CENTUM VP DCS architectures. The module provides isolated digital output handling, contact signal interfacing, pulse generation, and field device control functions.
Hardware Specifications
Parameter
Specification
Model
ADM51C-2
Brand
Yokogawa Electric Corporation
Origin
Japan
Weight
0.1 kg
Dimensions
2.5 cm x 22.9 cm x 7.6 cm
Operating Temp
0 deg C to 50 deg C
Power Consumption
<= 600 mA at 5.0 VDC
Product Type
Digital Output / Contact Module
System Compatibility
CENTUM CS, CENTUM CS 3000, CENTUM VP DCS
Number of I/O Points
16 points
Output Type
Transistor Contact / Open Collector Output
Maximum Contact Rating
30 VDC, <= 100 mA
Pulse Width Range
0.1 to 7,200 seconds configurable
Pulse Width Resolution
20 ms
Isolation Method
Individual point galvanic isolation
Withstand Voltage
500 VAC
Mounting
I/O Module Nest / Field Control Unit Sub-rack
Signal Connection
Front connector, M4 terminal blocks, KS series cable assemblies
DCS Signal Isolation and Control Characteristics
The ADM51C-2 applies Yokogawa process I/O design principles for discrete signal processing. Individual channel isolation separates field-side electrical conditions from adjacent points and the control system backplane. The module supports ON/OFF status output, one-shot pulse output, pulse-width modulation, and time-proportional ON/OFF control modes.
The module includes channel-to-channel isolation functions to reduce signal interference during discrete switching operations. The hold/reset mechanism supports online module replacement procedures by maintaining defined output behavior during maintenance operations.
Frequently Asked Questions
Q: Does the ADM51C-2 support isolated discrete output operation? A: Yes. The module provides individual point galvanic isolation for discrete output channels to separate field signals and reduce electrical interference.
Q: What pulse functions are available on the ADM51C-2? A: The module supports configurable pulse output functions including one-shot pulse, pulse-width modulation, and time-proportional ON/OFF control.
Q: Can the ADM51C-2 be replaced while the DCS remains online? A: The module includes a hold/reset action mechanism intended to maintain controlled signal behavior during online module replacement procedures.
Field Installation Guidelines
Install the ADM51C-2 in the specified Yokogawa I/O Module Nest or Field Control Unit sub-rack.
Verify connector orientation and terminal assignment before applying field wiring.
Separate low-level signal wiring from high-voltage power cables to minimize electrical noise coupling.
Connect cable shields according to the site grounding standard and avoid multiple grounding points on signal shields.
Confirm field device voltage and current requirements remain within the specified output contact rating.
Check backplane seating and module locking mechanisms before system startup.
Verify discrete output states after installation through the DCS maintenance and diagnostic functions.
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.
