Yokogawa LCA*C CENTUM Signal Conditioner PCB

Product Overview

The Yokogawa LCA*C is a signal conditioner PCB designed for use within the Yokogawa CENTUM series Distributed Control Systems (DCS). It performs essential signal normalization and galvanic isolation between field instruments and the system's I/O processing units. By conditioning raw analog signals from sensors and transmitters, the LCA*C ensures accurate, stable, and noise-resistant data transmission to the control system.

Key Specifications

• Product Family: Yokogawa CENTUM DCS Signal Conditioner
• Module Type: Signal Conditioner / I/O Interface Board
• Input Signals: 4-20 mA, 1-5 V DC, mV ranges (suffix dependent)
• Isolation Voltage: 1500 V AC (field side to system side)
• Power Supply: Supplied via system backplane
• Operating Temperature: -20°C to +60°C
• Mounting: Plug-in PCB for Yokogawa card nests
• System Compatibility: CENTUM VP, CENTUM CS, INNIS01/INNPM11 interfaces

Features and Benefits

• High-precision signal conditioning ensures accurate analog data acquisition
• 1500 V AC galvanic isolation protects system electronics from field-side electrical faults
• Compact plug-in PCB design enables fast module replacement without rewiring
• Supports multiple input signal types for flexible field instrument integration
• Rugged construction withstands industrial temperature extremes and vibration
• Compatible with INNIS01 network interface slave and INNPM11 network processing modules

Applications

• Analog signal conditioning for CENTUM DCS I/O nests
• Field transmitter 4-20 mA signal isolation and normalization
• Thermocouple and RTD mV signal processing
• Process control unit interface signal routing
• System redundancy configurations with dual NIS/NPM modules

FAQ

Q: What does the suffix *C indicate on the LCA module?
A: The suffix letter denotes the hardware revision level. LCA*C indicates Revision C. Earlier revisions include LCA*A and LCA*B. Verify compatibility with your specific CENTUM system version before ordering.

Q: What is the INNIS01/INNPM11 interface?
A: The process control unit interface consists of the INNIS01 Network Interface Slave Module and INNPM11 Network Processing Module. The LCA*C works with this interface to provide INFI-NET network access and Controlway communication.

Q: Does this module support redundant configurations?
A: Yes. The interface can support hardware redundancy with two NIS modules and two NPM modules. If the primary modules fail, the backup modules come online automatically.

Q: What input signal ranges are supported?
A: The module supports 4-20 mA, 1-5 V DC, and various mV ranges. Specific range depends on the suffix variant.

Installation Guide

1. Power down the DCS rack before handling signal conditioner cards
2. Align the LCA*C PCB with the card nest guide rails
3. Insert the board firmly until the backplane edge connector engages fully
4. Verify the board is seated at the same depth as adjacent modules
5. Configure signal ranges in the CENTUM engineering station
6. Perform loop checks to verify signal integrity from field to controller

Selection Tips

• Select LCA*C for CENTUM DCS signal conditioning applications
• Verify your DCS software version supports Revision C hardware
• Confirm required input signal range (4-20 mA, 1-5 V, or mV) before ordering
• For redundant systems, order matching pairs of NIS and NPM modules
• Ensure the card nest has available slots for installation