Product Description

The P0917LH is a high-density discrete I/O interface module engineered for the Invensys Foxboro I/A Series Distributed Control System. It provides the physical interface between control logic and field-level binary devices, offering 32 individually configurable channels that can be set as either discrete inputs or discrete outputs. This flexibility minimizes spare-part requirements and optimizes control cabinet space.

Built for mission-critical reliability, the P0917LH features galvanic isolation to protect control electronics from field-side electrical noise and transients. When installed in a redundant configuration, paired modules provide full hardware redundancy, maintaining continuous operation even in the event of a module failure. The module is optimized for seamless integration with the FBM217 Fieldbus Module, ensuring high-speed and deterministic data exchange.

Technical Specifications

Application Scenarios

The P0917LH is widely used in applications requiring high-density binary control and monitoring, including:

• Chemical batch and sequence control

• Water and wastewater treatment systems

• Conveyor and material handling systems

• Solenoid valve and motor starter control with feedback monitoring

Its ability to drive high-current loads while simultaneously monitoring discrete feedback signals makes it ideal for compact, high-performance control architectures.

Technical FAQ

Q: Can the P0917LH handle AC voltage signals?
A: No. The P0917LH is designed exclusively for DC discrete signals up to 30 V DC. AC signals require external interposing relays or a dedicated AC discrete interface module.

Q: Can inputs and outputs be mixed on the same module?
A: Yes. Each of the 32 channels is independently configurable, allowing any combination of discrete inputs and outputs on a single P0917LH module.