KL1408 Beckhoff 8-channel Digital Input Terminal 24VDC 3.0 Ms 5 MA 500 Vrms

KL1408 Beckhoff 8-channel Digital Input Terminal 24VDC 3.0 Ms 5 MA 500 Vrms

1.Overview of the KL1408 Beckhoff

The KL1408 is a high-density, 8-channel digital input terminal module from Beckhoff, Germany, designed specifically for industrial automation control systems. Using single-wire connection technology, it transmits binary 24 V DC control signals from the field to the host controller in an electrically isolated manner. It is a key component of the Beckhoff Bus Terminal I/O system.

Key Features
8-Channel Digital Input: Each terminal integrates eight independent channels, significantly saving control cabinet space and improving system integration.
Galvanic Isolation: 500 Vrms (K-bus/field potential) isolation effectively suppresses field interference and ensures stable system operation.
LED Status Indicator: Each channel features a separate LED that displays the input signal status in real time, facilitating on-site commissioning and maintenance.
Input Filtering: Built-in 3 ms input filtering eliminates mechanical switch chatter and improves signal reliability.
Single-Wire Connection: Utilizing single-wire technology, wiring is simplified, reducing wiring effort and installation costs. Low-power operation: The K-bus consumes only 5 mA, reducing overall system energy consumption and making it suitable for large-scale I/O expansion.

2.Core Features:

Product Type: KL1408
Manufacturer: Beckhoff Automation
Product Type: Bus Terminal, Digital Input
Number of Input Channels: 8
Rated Voltage: 24 V DC (Range: -15% / +20%)
Signal Voltage Range: -0 Signal: -3 V to +5 V
-1 Signal: +11 V to +30 V
Input Current: -0 Signal: 0 to 1.5 mA
-1 Signal: 2.0 to 2.5 mA
Input Filter: Typical: 3.0 ms
Electrical Isolation: 500 V (between K-bus and field potential)
Connection Technology: Single-Wire
Process Image Bit Width: 8 Input Bits
Configuration: No address or configuration settings required
Status Indicator: 1 status LED per channel
Operating Temperature: -25°C to +60°C
Storage Temperature: -40°C to +85°C Protection rating: IP20 Weight: Approximately 55 grams Certifications/Markings: CE, UL, ATEX, DNV GL, etc.

Key Features
High-Density and Compact Design: The module is only 12 mm wide and provides 8 input channels, making it ideal for space-saving and high-density installation within control cabinets.

Reliable Signal Processing: The module acquires binary control signals from the process level and transmits them to higher-level automation units with electrical isolation.

Strong Anti-Interference Capability: A built-in 3 millisecond input filter effectively prevents signal misinterpretation caused by mechanical switch contact bounce.

Convenient Installation and Diagnostics: Utilizes spring-loaded wiring technology (supports solid and flexible cables). Individual LEDs for each channel provide intuitive signal status display, facilitating on-site commissioning and maintenance.

3.Product details pictures

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