Beckhoff KL1408 – Overview The Beckhoff KL1408 is an 8-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 system. Its compact width and efficient wiring enable space-saving installation in control cabinets. Key Features Eight digital input channels, 24 V DC nominal Input specification EN 61131-2, type 1/3 Typical input filter time of 3.0 ms — helps avoid bouncing from mechanical switches Single-wire connection technology for simplified wiring LED indication for each input channel Electrical isolation of 500 V between K-bus and field potential Compact housing suitable for 35 mm DIN-rail mounting Technical Specifications Part Number: KL1408 Number of Inputs: 8 Nominal Voltage: 24 V DC (-15 % / +20 %) Signal Voltage “0”: -3 V … +5 V (EN 61131-2, type 1/3) Signal Voltage “1”: 11 V … 30 V (EN 61131-2, type 3) Input Filter: typ. 3.0 ms Input Current (typ.): 3 mA (EN 61131-2, type 3) Current Consumption (K-bus): typ. 5 mA Electrical Isolation: 500 V (K-bus / field potential) Bit Width in Process Image: 8 input bits Connection Technology: 1-wire Housing Dimensions (W × H × D): 12 mm × 100 mm × 68 mm approx. Operating Temperature: -25 °C … +60 °C Storage Temperature: -40 °C … +85 °C Protection Rating: IP20 Manufacturer: Beckhoff Automation Weight (module): Approx. 55 g Packed Dimensions: 12 × 7 × 6 cm (4.7 × 2.8 × 2.4 in) Weight (packed): 0.10 – 0.23 kg (0.22 – 0.50 lb) Applications Reading of 24 V DC sensor signals, switches and push-buttons in industrial automation Distributed I/O systems requiring compact digital input modules Control cabinets where space is limited and high channel density is needed Machine automation systems using Bus Terminal architecture Why Choose Beckhoff KL1408 Compact 8-channel digital input in a slim housing, optimizing cabinet space Reliable 24 V DC signal acquisition with electrical isolation for robust performance Fast input detection with 3 ms filter for clean signal capture Trusted brand with proven industrial-grade reliability and global shipping availability Order Now The Beckhoff KL1408 8-Channel Digital Input Terminal is available for order and ships worldwide.
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