1SAP220500R0001
May 19, 2026

1SAP220500R0001

1SAP220500R0001 (DC551-CS31) Brand: ABB (Switzerland) Model: 1SAP220500R0001 (referred to as DC551-CS31) Category: S500 series CS31 bus I/O module (8DI/16DC), used for AC500 PLC system.

Description

Basic Information

Shell: Industrial flame-retardant plastic, 35mm DIN rail mounting

Wiring: 24VDC spring terminals, supports 1/2-wire

Protection: IP20, electrical isolation, anti-interference

Certifications: CE, RoHS

Dimensions: Approximately 67.5 × 76 × 62 mm

Weight: Approximately 0.2 kg

Functions and Positioning

8 Digital Inputs (8DI): 24VDC, NPN/PNP universal

16 Digital Outputs (16DC): 24VDC / 0.5A / point, transistor output, short-circuit protection

Interface: CS31 bus (ABB's old fieldbus), as a remote I/O slave station

Usage: Expand AC500 system I/O points, distributed control, wiring savings

Support hot swapping, can be replaced while powered on

Core Parameters

Operating Voltage: 24VDC ±10%

Input: 8DI, 24VDC, sink/source compatible

Output: 16DC, 24VDC, 0.5A / point, short-circuit protection

Bus: CS31 (1-wire)

Operating Temperature: 0~+60℃

Storage Temperature: -40~+70℃

Compatibility and Applications

Compatible PLCs: AC500 / AC500-eCo / AC500-S

Complementary: CS31 bus cable, S500 series base station Application scenario:

Old line renovation (extension of the original CS31 system)

Packaging, textile, rubber and plastic machinery

Water treatment, HVAC (Heating, Ventilation, and Air Conditioning)

Small and medium-sized distributed I/O control


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