PLCs, Power Supplies & Others

This CPU module executes control logic for Schneider Modicon automation systems. It manages I/O data and communication tasks for industrial applications. Therefore, this component suits process control and manufacturing environments.

Physical Dimensions and Weight Specifications

The Schneider PCBALU252 occupies one standard slot in the Modicon rack. Its housing measures 220 mm in depth for backplane connectivity. The module weighs approximately 0.48 kg for straightforward handling. Consequently, technicians can install this unit without additional rack reinforcement.

Interface Types and Connection Layout

The Schneider PCBALU252 provides one RS-232 port for programming access. A second RS-485 port supports Modbus communication with field devices. The front panel carries a built-in Ethernet port for plant network connectivity. Hence, users can program and monitor this CPU remotely.

Component Count and Onboard Memory

This CPU module contains one main board with a 16-bit microcontroller. The board holds 128 KB of battery-backed RAM for user programs. You will also find 256 KB of flash memory for non-volatile storage. An onboard real-time clock maintains schedule data during power cycles.

Energy Storage and Power Consumption

The Schneider PCBALU252 draws 220 mA from the 5V backplane supply. A lithium battery retains RAM data for 500 days without external power. This battery maintains user programs during prolonged facility shutdowns. Therefore, the CPU eliminates the need for frequent reprogramming after outages.

Processing Speed and I/O Capacity

The processor executes 0.4 microseconds per basic logic instruction. It handles up to 1024 digital I/O points within a single scan. Users can store up to 2048 function blocks in the flash memory. This capacity supports mid-sized automation tasks for production lines.

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