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Input Digital PLC Siemens SM 321, Pengasingan Potensi, 32 DE 6ES7321-1EL00-0AA0

model:

Siemens S7-300 SM 321 6ES7321-1EL00-0AA0

SKU:

770005810154_6ES7321-1EL00-0AA0

Jenis Produk:

Digital Input

MOQ:

1 Keping

Yang Siemens 6ES7321-1EL00-0AA0 is a digital input module from the SIMATIC S7-300 series, designated as SM 321. Designed for industrial automation applications, this module features 32 digital input channels with 120V AC voltage rating, providing reliable signal acquisition from field devices such as switches, proximity sensors, and 2/3/4-wire BERO proximity switches . 32-channel digital input (DI) module for the SIMATIC S7-300 PLC system, designed for reading large quantities of 24V DC sensor signals with potential isolation for safe and reliable operation.

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Siemens 6ES7321-1EL00-0AA0 SM 321 Digital Input Module

A 32-channel digital input (DI) module for the SIMATIC S7-300 PLC system, designed for reading large quantities of 24V DC sensor signals with potential isolation for safe and reliable operation.

Key Specifications:

Module Type: Digital Input (DI)
Number of Channels: 32 channels
Input Voltage: 24V DC (nominal), suitable for standard industrial sensors and switches.
Electrical Isolation: Potential isolation between the backplane bus (PLC logic) and the field-side sensor circuits, protecting the CPU from electrical interference or faults.
Connection: Via front 40-pin connector (requires separate connector, e.g., 6ES7392-1AJ00-0AA0).
Diagnostics: No integrated channel-level diagnostics (simple status LEDs per channel).
Mounting: Installs on a S7-300 DIN rail and connects to the central or expansion rack via a backplane bus.

Typical Applications:

High-density sensor and switch monitoring (e.g., limit switches, pushbuttons, proximity sensors).
Applications requiring electrical isolation between control logic and field devices for noise immunity or safety.

Note: This module requires an external 24V DC power supply for the field devices. The potential isolation is a key feature, as it electrically separates the internal electronics from the field wiring, enhancing system stability and protecting the CPU from ground loops or voltage spikes. It is a standard, high-density module for cost-effective I/O expansion in S7-300 systems

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