ABB AC500-eCo PM554-T-ETH-A0 Programmable Logic Controller Module

Description

The ABB PM554-T-ETH-A0 is a compact, feature-rich programmable logic controller (PLC) CPU from the AC500-eCo series, designed as an all-in-one automation brain for small to mid-sized applications. It combines a 32-bit RISC processor with integrated Ethernet communication and onboard digital I/O (8 inputs / 6 transistor outputs) in a single module. Operating on 24VDC power, this controller is engineered for ease of use, offering straightforward DIN rail mounting and expandability via optional I/O modules. It serves as an ideal solution for equipment control, building automation, and distributed process tasks where space, cost, and network connectivity are key considerations.

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Description

Application Scenarios

In a municipal water pumping station, reliable control of pumps, valves, and level sensors is critical to prevent overflow or dry running. Traditional relay-based systems often suffer from inflexibility and high maintenance, while complex PLCs can be overkill. The ABB PM554-T-ETH-A0 fits perfectly here: its onboard 24VDC I/O directly interfaces with field sensors and pump contactors, the built-in Ethernet port enables real-time monitoring via SCADA, and the compact size saves cabinet space. It solves the core pain points of simplicity, remote diagnostics, and cost-effectiveness for utility infrastructure.

Parameter

Main Parameters	Value / Description
Product Model	PM554-T-ETH-A0
Manufacturer	ABB
Product Category	Programmable Logic Controller (PLC) CPU
Series / Platform	AC500-eCo
Supply Voltage	24 VDC (Rated)
Onboard I/O	8x Digital Inputs (24VDC Sink/Source), 6x Digital Outputs (Transistor, 0.5A)
Communication Ports	1x Ethernet (10/100 Mbps, Modbus TCP/IP), 1x RS485 (Modbus RTU/ASCII)
Program Memory	128 kB Flash (typical)
Expansion Capability	Up to 7 extension modules (S500 series)
Operating Temperature	0 °C to +60 °C
Mounting	DIN Rail (TH35-15)
Dimensions (WxHxD)	Approx. 135 mm x 74 mm x 82 mm