Siemens 6ES7321-1BL00-0AA0

Siemens 6ES7321-1BL00-0AA0 | S7-300 Digital Input Module – 8 Channels, 24V DC Sink, LED Indicators, 40-Pin

Overview

The Siemens 6ES7321-1BL00-0AA0 is an 8-channel digital input module for the SIMATIC S7-300 automation system. Designed to receive 24V DC sink input signals, it provides fast and reliable input detection with individual channel LED indicators for diagnostics and status monitoring.

Key Features

• Input Channels: 8 digital (sink)

• Input Voltage: 24V DC

• Input Type: Sink (positive logic)

• Status LEDs: Per channel

• Connection: 40-pin front connector (not included)

• Mounting: S7-300 rack

Technical Specifications

• Part Number: 6ES7321-1BL00-0AA0

• Series: SIMATIC S7-300

• Input Current (typ.): ~7 mA

• Input Delay: 1.2 ms (typical)

• Isolation: Opto-isolated inputs

• Power Supply: 5V DC (from backplane)

• Dimensions (W x H x D): Approx. 40 x 125 x 120 mm

• Weight: Approx. 200 g

• Operating Temperature: 0°C to +60°C

• Certifications: CE, UL, RoHS

Applications

• Machine-level digital signal acquisition

• Switch and sensor monitoring

• Automation panels using S7-300 PLCs

• Industrial process input interfacing

• Motor control and monitoring systems

Why Choose the 6ES7321-1BL00-0AA0?

• Reliable Digital Input Handling: 8 isolated 24V DC sink inputs

• Compact Design: Saves rack space in control panels

• Visual Diagnostics: LED status for fast troubleshooting

• Compatible with S7-300: Easy system integration

• Proven Siemens Durability: Built for industrial automation

Order Now

The Siemens 6ES7321-1BL00-0AA0 DI module is available and ships worldwide.