SEL-3573 and SEL-3555 Comparison Chart

SEL-3573 Station PDC

SEL-3555 Real-Time Automation Controller (RTAC)

Number of Inputs

120

100

Number of Outputs

10

100

Archiving

Yes

Yes (with DDR extension)

Data Rates

Up to 240 messages per second

Up to 240 messages per second

Control

No

Yes

Input Format

IEEE C37.118

IEEE C37.118

DNP3

Modbus

SEL Fast Message

Output Format

IEEE C37.118

IEEE C37.118

DNP3

Modbus

SEL Mirrored Bits communications

SEL Fast Message

Platform

Hardware

Hardware

Selectable Outputs

Yes

Yes

Multiple Input Rates

Yes

No