The Yokogawa ADM12T is a Contact Input Module designed for distributed control systems, supporting 32 input points with reliable ON/OFF detection, push‑button input capability, and edge counting functions. It ensures stable signal acquisition with common minus side insulation and robust installation features.
Hardware Specifications
Model: ADM12T
Brand: Yokogawa
Product Type: Contact Input Module
No. of I/O Points: 32 points
Input Signal:
Contact input: OFF ≥100 kΩ, ON ≤200 Ω
Voltage input: OFF 4.5–25 V DC, ON ±1 V DC, ≤200 Ω
Contact Rating: 5 V DC, ≥20 mA (external contact standard)
Pulse Width: ≥40 ms
Pulse Period: ≤10 Hz
Current Consumption: ≤600 mA (5.0 V DC)
Functions:
Status input
Push‑button input
ON/OFF status detection
Edge counting for push‑buttons
Signal Insulation: Common minus side
Mounting Method: Installed in the I/O module nest
Signal Connection: Terminal connection with M4 screws
Key Features
32 input points for flexible signal acquisition.
Push‑button input capability with edge detection.
ON/OFF detection ensures accurate monitoring of contact signals.
Pulse handling with minimum 40 ms width and ≤10 Hz period.
Common minus side insulation for reliable system integration.
Frequently Asked Questions (FAQ)
Q: How many signals can the ADM12T handle? A: It supports 32 contact input points.
Q: Can the module detect push‑button edges? A: Yes, it includes a function to count push‑button edges.
Q: What is the minimum pulse width supported? A: The module requires a minimum pulse width of 40 ms.
Field Installation Guidelines
Install the ADM12T securely into the I/O module nest.
Connect signals to the nest terminal using M4 screws with proper torque.
Maintain shield grounding at a single point to prevent ground loops.
Separate signal wiring from high‑voltage cabling to minimize interference.
Configure input signal ranges via system software before commissioning.
