During technical comparisons, KL1402 appears alongside Kl2134 Beckhoff, Kl4032 Beckhoff and Kl1501 Beckhoff so engineers assess signal types, ingress protection, and ambient tolerances accurately.
KL1402 - Beckhoff Bus Terminal Digital Input
Beckhoff KL1402 Bus Terminal Digital Input ensures reliable 2-channel signal acquisition for automation systems requiring compact, precise input handling.
| Brand | Beckhoff |
| Product Type | Bus Terminal Digital Input |
| Product | KL1402 |
KL1402 Beckhoff Bus Terminal Digital Input Technical Specifications
| Specification | Value |
|---|---|
| Connection technology | 4-wire |
| Specification | EN 61131-2, type 1/3 |
| Number of inputs | 2 |
| Nominal voltage | 24 V DC (-15%/+20%) |
| "0" signal voltage | -3...+5 V (EN 61131-2, type 2) |
| "1" signal voltage | 11...30 V (EN 61131-2, type 2) |
| Input filter | typ. 3.0 ms |
| Input current | typ. 3 mA (EN 61131-2, type 3) |
| Current consumption K-bus | typ. 3 mA |
| Bit width in the process image | 2 inputs |
| Configuration | no address or configuration setting |
| Weight | approx. 50 g |
| Operating temperature | 0...55°C |
| Storage temperature | -25...+85°C |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Pluggable wiring | for all KSxxxx Bus Terminals |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx, DNV GL |
| Ex marking | ATEX:II 3 G Ex ec IIC T4 GcIECEx:Ex ec IIC T4 Gc |
| Housing - Design form | compact terminal housing with signal LEDs |
| Housing - Material | polycarbonate |
| Housing - Dimensions (W x H x D) | 12Â mm x 100Â mm x 68 mm |
| Housing - Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Housing - Side by side mounting by means of | double slot and key connection |
| Housing - Marking | labeling of the BZxxxx series |
| Housing - Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver |
| Housing - Connection cross-section | s*: 0.08...2.5 mm²,st*: 0.08...2.5 mm²,f*: 0.14...1.5 mm² |
| Housing - Connection cross-section AWG | s*: AWG28...14,st*: AWG28...14,f*: AWG26...16 |
| Housing - Stripping length | 8...9 mm |
| Housing - Current load power contacts | Imax: 10 A |
| Current consumption power contacts | typ. 1 mA + load |
The Beckhoff KL1402 Bus Terminal Digital Input is a compact and efficient solution for digital signal processing in automation systems. Designed with 2 input channels that meet the EN 61131-2 type 1/3 standard, it ensures compliance with industry protocols. It operates at a nominal voltage of 24 V DC and uses a 3 mA input current, making it well-suited for integration into energy-efficient systems. The terminal incorporates an input filter of typical 3.0 ms for stable signal recognition, minimizing electrical noise and ensuring reliable switching.
Durability is a key strength of the KL1402 Digital Input Terminal. The unit supports a wide temperature range of 0 to 55°C during operation and -25 to +85°C for storage, making it reliable in diverse plant environments. With IP20-rated housing, compact dimensions of 12 x 100 x 68 mm, and support for DIN rail mounting, installation is fast and adaptable. The polycarbonate housing with signal LEDs provides both ruggedness and easy diagnostics. Compliance with CE, UL, ATEX, IECEx, and DNV GL standards ensures global applicability and certification for demanding industries.
Applications for the Beckhoff KL1402 Bus Terminal range from machine control and process monitoring to building automation and distributed I/O systems. Its low current consumption of 3 mA via K-bus contributes to energy-efficient operation, while the pluggable wiring supports flexible system integration. With its combination of precision, durability, and compliance with international standards, the KL1402 Bus Terminal Digital Input is trusted by engineers worldwide for reliable signal acquisition in modern industrial automation projects.
