SAIA-BURGESS PCD2.M487

Overview

SAIA-BURGESS PCD2.M487 is a CPU module of the Saia Burgess PCD2 series programmable controller. It is a compact, powerful automation processor designed for building automation, HVAC, energy management and general industrial control applications. It is widely supplied as exchange spare for air handling units, chiller control panels, lighting systems and plant automation cabinet overhaul and replacement.

Features

SAIA-BURGESS PCD2.M487 supports program execution in standard Saia PG5 programming environment. It integrates multiple onboard communication ports, including RS232, RS485 and Ethernet. It can run standard protocols such as Modbus RTU, Modbus TCP, S-Bus and BACnet IP for seamless integration with sensors, actuators, VFDs, BMS and SCADA systems.

SAIA-BURGESS PCD2.M487 works with PCD2 series I/O expansion modules for digital and analog signal acquisition and output. It features real-time clock, program memory and data retention to preserve variables after power loss. Status LEDs indicate run, stop, error and bus activity for fast on-site diagnostics. All application logic, alarm thresholds and schedules are configured via PG5 software. It complies with CE and EMC standards for DIN rail cabinet mounting with IP20 rating.

Specs

SAIA-BURGESS PCD2.M487Platform: Saia-Burgess PCD2 series Type: PLC CPU module Order code: PCD2.M487 Communication: Ethernet, RS232, RS485 Supported protocols: S-Bus, Modbus TCP, Modbus RTU, BACnet IP Programming tool: Saia PG5 Controls Suite Memory: onboard program and data memory Real-time clock: integrated Expansion: compatible with PCD2 I/O modules Mounting: DIN TH35 rail Protection rating: IP20 This is not an I/O module, relay or touch screen; it is the main CPU controller for Saia PCD2 automation systems. SAIA-BURGESS PCD2.M487 is widely supplied as service replacement spare for automation master control failure.

Principle

SAIA-BURGESS PCD2.M487 scans the user program cyclically. It reads field signals from local and remote I/O modules, executes control logic, calculates setpoints and updates output states. It exchanges data with upstream and downstream devices over the built-in communication interfaces. Internal diagnostics detect bus errors, program faults and communication failures, and store diagnostic information for maintenance review.

Applications

SAIA-BURGESS PCD2.M487 is deployed for building HVAC systems, cooling plant control, lighting control, energy metering and small process automation in commercial buildings, hospitals and industrial facilities. It is selected for spare inventory and BMS cabinet retrofit projects for existing Saia PCD2 control systems.