6ES7321-1BH02-0AA0 SIEMENS Digital input SM 321

SIEMENS 6ES7321-1BH02-0AA0 Digital input SM 321 :

SIMATIC S7-300, Digital input SM 321, isolated, 16 DI, 24 V DC, 1x 20-pole.

Product Description

The Siemens 6ES7321-1BH02-0AA0 is a digital input module (DI) designed for the SIMATIC S7-300 PLC series. This module is widely used in industrial automation to interface with discrete input signals from sensors, switches, and other field devices.

Technical Specifications:

Mechanical Design:

Dimensions (W x H x D): Approximately 40 mm x 125 mm x 120 mm (width varies slightly based on module configuration).

Mounting: Direct mounting in the S7-300 rack.

Weight: Approximately 250 g.

Environmental Specifications:

Operating Temperature: -25°C to +60°C

Storage Temperature: -40°C to +85°C

Protection Class: IP20 (for installation in control cabinets).

Electrical Specifications:

Power Supply: Supplied via the S7-300 backplane bus (24 V DC).

Input Voltage: 24 V DC (±20% tolerance).

Input Current: Typically 3-7 mA per channel (depending on signal state).

Isolation: Channels are isolated for enhanced noise immunity and safety.

Diagnostics and Status Indication:

LED Indicators: Provide real-time status feedback for system, error, and channel activity.

Built-in Diagnostics: Supports online diagnostics for troubleshooting and maintenance.

Approvals and Certifications:

CE, UL, cUL, GOST-R, and other industrial certifications.

Compliant with IEC 61131-2 and EN 60947-5-1 standards.

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