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Product Introduction
The Yokogawa ADM11C is a Contact Input Module designed for use with the Yokogawa CENTUM CS 3000 and CENTUM VP distributed control systems (DCS). As part of the ALR (Analog/Digital Logic Relay) input family, the ADM11C is responsible for receiving contact signals from field devices—such as push buttons, switches, or relay contacts—and transferring them accurately to the control system for monitoring and logic execution.
This module supports high-reliability performance in critical industrial automation environments, offering noise resistance, fast response time, and robust signal detection, even in electrically noisy conditions typical of power plants, petrochemical facilities, and heavy manufacturing sectors.
The ADM11C supports 16 contact input channels per module and is engineered for rack-mount installation in the FCS (Field Control Station) base plate.
Product Specifications
| Parameter | Specification |
|---|---|
| Model | ADM11C |
| Function | 16-channel Contact Input Module |
| System Compatibility | CENTUM CS, CS 3000, CENTUM VP |
| Input Type | Dry Contact / Voltage-Free Contact |
| Number of Channels | 16 isolated channels |
| Input Voltage Range | 24 V DC (Nominal) |
| Input Current | Approx. 6 mA (at 24V DC per channel) |
| Contact ON Voltage | ≤ 5 V |
| Contact OFF Voltage | ≥ 15 V |
| Input Delay Time | Approx. 10 ms |
| Channel Isolation | Photo-coupler isolated per channel |
| Status Indication | LED per channel (ON = Contact Closed) |
| Redundancy | Supported at system level via dual FCS configurations |
| Operating Temperature | 0 to 50°C |
| Storage Temperature | -20 to 70°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Mounting Method | Mounted on I/O base plate (NFP) |
| Material | Flame-retardant plastic enclosure |
| Dimensions (H x W x D) | 120 x 30 x 40 mm |
| Weight | 0.14 kg |
| Protection Rating | IP20 (when mounted) |
| Certifications | CE, CSA, UL, RoHS compliant |
Product Applications
The ADM11C Contact Input Module is widely deployed in industries that require safe and accurate detection of binary signals. Its key application areas include:
-
Power Generation Plants
For monitoring breaker status, interlock signals, and mechanical limit switches in turbine protection and boiler controls. -
Oil and Gas Facilities
Used in wellhead control systems, compressor stations, and pipeline monitoring for remote start/stop and alarm inputs. -
Chemical and Petrochemical Plants
Integration with emergency shutdown systems (ESD), tank level switches, and valve open/close indicators. -
Water Treatment Plants
For pump control status, gate valve position monitoring, and alarm signaling. -
Steel and Heavy Industry
Monitoring of machine position switches, conveyor limit contacts, and process safety interlocks. -
Building Automation Systems
Capturing inputs from door sensors, fire alarms, and manual override switches.
Product Advantages
-
High Signal Integrity
Each input channel is opto-isolated, ensuring protection against voltage spikes and reducing the risk of control logic interference. -
Industrial-Grade Design
Built to perform reliably in harsh industrial conditions, with strong resistance to temperature variation, humidity, and electrical noise. -
Ease of Integration
Fully compatible with Yokogawa’s DCS platforms, making integration into existing systems straightforward and time-saving. -
Compact Footprint
Slim vertical module design saves panel space and allows higher I/O density per rack. -
Channel Status Monitoring
Onboard LEDs allow quick visual inspection of channel status during commissioning or maintenance. -
Long-Term Stability
Minimal drift, solid-state isolation, and robust build ensure stable long-term operation, reducing maintenance frequency. -
Fail-Safe Performance
Integrated into systems supporting redundancy and safety-critical functions with proven track records. -
No External Power Required for Inputs
Designed for dry contact inputs, reducing wiring complexity and field-side failures. -
Certified for Global Use
CE, UL, CSA, and RoHS certifications ensure broad acceptance in global industrial projects.
Frequently Asked Questions (FAQ)
-
Q: What is the primary function of the ADM11C?
A: It detects dry contact input signals from field devices and sends their states to the control system. -
Q: How many inputs can the ADM11C handle?
A: It supports 16 independent input channels per module. -
Q: What kind of field devices can be connected to it?
A: You can connect push buttons, mechanical switches, relay contacts, or dry alarm contacts. -
Q: Is it suitable for safety systems?
A: Yes, when used within a redundant and validated DCS configuration, it can support safety-related monitoring. -
Q: Does it need power for the inputs?
A: No, it accepts voltage-free (dry contact) inputs, so external voltage is not required at the contact point. -
Q: Can I mix ADM11C with analog modules in the same rack?
A: Yes, Yokogawa’s base plates support mixed installation of digital and analog modules. -
Q: Is hot-swapping supported?
A: Modules are not typically hot-swappable. The system must be powered down or isolated before replacement. -
Q: Does the ADM11C provide galvanic isolation?
A: Yes, each input channel is opto-isolated to protect the control system. -
Q: How is the status of each input shown?
A: Each channel has an LED indicator that lights up when the contact is closed (ON state). -
Q: Can I use it in marine or offshore applications?
A: Yes, with proper cabinet protection and certification extensions, it’s widely used in offshore oil/gas projects.
Related Models (Same Series or Function)
| Model Number | Description | Input Channels | Remarks |
|---|---|---|---|
| ADM11 | Basic contact input module | 16 | Predecessor to ADM11C |
| ADM12C | Contact input with pulse detection | 16 | Supports high-speed contact inputs |
| ADM51 | Contact input (low-speed type) | 8 | Suitable for slower state-change detection |
| AAI143-H50 | Analog Input (voltage type) | 8 | Used alongside ADM series in hybrid racks |
| ADV151 | Digital Output Module | 16 | Commonly paired with ADM for relay outputs |
| ADV161 | Pulse Output Module | 8 | Used in turbine or motor control systems |
Popular Yokogawa Models Across Product Families
| Model Number | Description | Function |
|---|---|---|
| AAI143-H50 | Analog Input Module (Voltage, 1–5 V) | Process signal monitoring |
| ADV151 | Digital Output Module (Relay Type) | Binary control output |
| AAI841-H00 | HART-Compatible Analog Input Module | Field device integration |
| CP451-10 | CPU Module for CENTUM VP | Control processing unit |
| PW482-10 | Power Supply Module (Baseplate Mount) | System power delivery |
| NFAI135-S00 | FOUNDATION Fieldbus AI Module | Fieldbus input support |
