Product Introduction
Technical Specifications
|
Brand |
WOODWARD |
|
Model |
9905-971 |
|
Description |
16 Channel Discrete Input Module |
|
Origin |
USA |
|
Dimension |
30*20*15cm |
|
Weight |
0.5kg |
Primary Functions

The multi-channel input structure of 9905-971
As a 16-channel discrete input module, the Woodward 9905-971 realizes centralized collection of a large number of on-site switch quantity signals through 16 independent discrete input channels, and is suitable for industrial control system applications with dense points.
Design of Discrete Signal Acquisition for Industrial Control
9905-971 Discrete Input Module, specifically designed for collecting equipment operation status, interlock conditions, and protection contact signals, providing a reliable digital input foundation for the control system.
Input channel isolation and anti-interference capability
Each input channel of the 9905-971 Discrete Input Module has excellent electrical isolation characteristics, which can effectively suppress the influence of on-site electromagnetic interference and voltage fluctuations on the accuracy of the signal.
Fast response digital sampling characteristics
9905-971 has a relatively fast signal refresh capability under the 16 Channel Discrete Input Module architecture, which can promptly capture changes in the on-site status and meet the real-time requirements of industrial control systems.
Industrial-grade structure and long-term operational stability
As an industrial-grade 16-channel discrete input module, 9905-971 is suitable for continuous operation environments. It can maintain stable input performance even in the presence of vibration, electromagnetic interference, and complex working conditions.
Key Benefits
Collect multiple discrete state signals in a centralized manner
With the multi-input channel design of the 16 Channel Discrete Input Module, the 9905-971 can simultaneously collect discrete signals from buttons, limit switches, relay contacts, and equipment status outputs.
To provide reliable input conditions for the control logic
9905-971 as a 16-channel discrete input module, reliably transmits on-site discrete signals to the control system, supporting the realization of logic judgment, status interlock, and sequential control functions.
Support for equipment operation and protection status monitoring
This 16-channel discrete input module can be used to collect start/stop status, alarm contacts and protection signals, providing basic data for system operation monitoring and security strategies.
Improve the utilization efficiency of system I/O resources
By using a single 16-channel discrete input module, multiple signal connections can be achieved, effectively reducing the number of required modules and making the system structure more compact and clear.
I/O expansion applicable to control systems
In system expansion or renovation projects, 9905-971 as a 16-channel discrete input module, can flexibly supplement discrete input points and enhance the scalability of the system.
Technical Q&A
Everything customer Need to Know
9905-971 is it used for analog signal acquisition?
No, this module is only used for digital (switching) inputs and is not applicable to current or voltage type analog signals.
Can this module be used independently?
9905-971 is usually used as part of the control system and needs to work in conjunction with the main controller or communication module.
Does the input signal support dry contacts?
In engineering applications, this module can be connected to dry contacts or active signals through appropriate wiring methods. The specific approach depends on the system design.
Does replacing the module require reconfiguring the system logic?
When the input points and signal definitions remain unchanged, replacing the module usually does not require modifying the control logic













