Beckhoff PLC module KL1104

The Beckhoff KL1104 is a 4-channel digital input terminal designed to acquire binary 24 V DC control signals from the process level and transmit them, in an electrically isolated form, to the higher-level automation unit. This Bus Terminal is equipped with four channels, each indicating its signal state via light-emitting diodes (LEDs). 

Key Features:

• Input Channels: Four independent channels for digital signal acquisition.
• Nominal Voltage: 24 V DC (-15%/+20%).
• Input Filter: Typical 3.0 ms, ensuring debounce-free signal acquisition from mechanical switches.
• Signal Indicators: Each channel is equipped with an LED to display its signal state, facilitating easy monitoring.
• Connection Technology: Supports 2-wire and 3-wire connections, providing flexibility in interfacing with various sensors.

Specifications:

• “0” Signal Voltage: -3 to +5 V.
• “1” Signal Voltage: 15 to 30 V.
• Input Current: Typically 5 mA per channel.
• Current Consumption (K-bus): Approximately 5 mA.
• Electrical Isolation: 500 V between K-bus and field potential.
• Operating Temperature Range: -25°C to +60°C.
• Protection Rating: IP20, suitable for indoor environments.
• Dimensions (W x H x D): 12 mm x 100 mm x 68 mm.
• Weight: Approximately 55 g.

Applications:

The KL1104 is ideal for applications requiring reliable digital signal interfacing, such as:

• Industrial Automation: Monitoring and acquiring signals from sensors, switches, and other binary devices.
• Building Automation: Integrating inputs from various building control systems like lighting, HVAC, and security systems.
• Process Control Systems: Acquiring digital signals from field devices to ensure precise process management.