The YOKOGAWA ADM11C, also cataloged as the ADM11C Contact Input Module, operates as a dedicated hardware component for 16-channel discrete status acquisition within CENTUM CS and CENTUM VP control system platforms. This module provides direct electrical interface for field-side dry contacts or 24 V DC signals, facilitating high-speed state monitoring while ensuring electrical separation between field devices and the internal system backplane.
| Parameter | Specification |
|---|---|
| Model | ADM11C |
| Brand | YOKOGAWA |
| Origin | Not specified |
| Weight | 0.42 kg |
| Dimensions | 125 mm x 100 mm x 150 mm |
| Operating Temp | -10 deg C to 55 deg C |
| Power Consumption | ~ 1.0 W |
| Input Channels | 16 points |
| Response Time | Filter time + 1 ms |
| Isolation | 1500 Vrms channel-to-backplane |
The ADM11C employs robust galvanic isolation to prevent common-mode electrical noise from propagating from the field environment into the DCS backplane. Each channel is equipped with selectable input filtering (1 ms to 20 ms), which enables the suppression of mechanical contact bounce and transient voltage spikes. This architecture ensures that binary state changes are registered with deterministic accuracy, maintaining system integrity even in environments characterized by high electromagnetic interference.
Q: Are the filter time settings configurable for individual channels or the whole module?
A: The filter settings are typically configured at the module or group level via the engineering station software. Users should select a filter time that effectively masks the bounce characteristic of the connected field device without introducing excessive latency into the control loop.
Q: Does the module support both dry contact and wet contact inputs?
A: Yes, the ADM11C is designed to interface with both dry contacts and active 24 V DC signals. When using dry contacts, ensure that the field circuit provides sufficient current to maintain the required threshold voltage levels.
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