Beckhoff KL1404 4-Channel Digital Input Bus Terminal (24 V DC, 3 ms, 2-Wire)
$ 52
KL1404
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4-channel digital input terminal with 2-wire connection technology
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24 V DC input voltage range with compliance to EN 61131-2 type 1/3
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3 ms input filter eliminates mechanical switch bounce
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LED indicators for each channel status
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Electrically isolated for system protection
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ATEX and IECEx certified for hazardous area environments
Beckhoff KL1404 4-Channel Digital Input Bus Terminal (24 V DC, 3 ms, 2-Wire)
The Beckhoff KL1404 is a 4-channel digital input Bus Terminal designed to acquire binary 24 V DC control signals from the process level and transmit them, with electrical isolation, to higher-level automation systems. Featuring 2-wire connection technology, compliance with EN 61131-2 type 1/3 specifications, and a 3 ms input filter, the KL1404 ensures reliable signal acquisition without mechanical switch bounce. Each channel features an LED indicator for easy status monitoring. Compact, robust, and certified for hazardous area use, the KL1404 integrates seamlessly into Beckhoff’s modular I/O system.
| Specification | Details |
|---|---|
| Connection Technology | 2-wire |
| Specification | EN 61131-2, type 1/3 |
| Number of Inputs | 4 |
| Nominal Voltage | 24 V DC (-15%/+20%) |
| “0” Signal Voltage | -3…+5 V (EN 61131-2, type 1/3) |
| “1” Signal Voltage | 11…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. 3 mA |
| Current Consumption (Power Contacts) | Typ. 1 mA + load |
| Electrical Isolation | 500 V (K-bus/field potential) |
| Bit Width in Process Image | 4 inputs |
| Configuration | No address or configuration setting required |
| Weight | Approx. 50 g |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +85 °C |
| Relative Humidity | 95%, no condensation |
| Vibration/Shock Resistance | EN 60068-2-6 / EN 60068-2-27 compliant |
| EMC Immunity/Emission | EN 61000-6-2 / EN 61000-6-4 compliant |
| Protection Rating / Installation Position | 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 Gc |
| Ex Marking (IECEx) | Ex ec IIC T4 Gc |
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