Replacing Yokogawa AAI835: Wiring and Barrier Checks Before Swap
Before replacing a Yokogawa AAI835, verify the 4-in/4-out channel map, power-loss loop behavior, barrier type, output load, cable, and redundancy.
Manufacturer: BECKHOFF
Product No.: EP2349-0021
Country of origin:Germany
Product Type: EtherCAT I/O Modules
Payment: T/T, Western Union
Weight: 250g
Dimensions: 60 mm x 126 mm x 26.5 mm
Shipping port: Xiamen
Warranty: 12 months
The Beckhoff EP2349-0021 is a highly adaptable decentralized EtherCAT Box designed for direct field integration without an environmental enclosure. Featuring 16 digital channels, this module allows each channel to be independently configured as either an input or an output, offering flexible channel management for complex control systems. Encased in a rugged polyamide housing, it ensures high reliability under demanding industrial conditions. Field communication is established via robust, shielded M8 screw-type connections, while standard sensors and actuators connect through A-coded M8 3-pin interfaces.
| Manufacturer | Beckhoff |
| Part Number / Model | EP2349-0021 |
| Protocol | EtherCAT |
| Number of Channels | 16 digital inputs or outputs, configurable |
| Bus Interface | 2 x M8 socket, shielded, screw-type |
| I/O Connections | M8 x 1, 3-pin, A-coded |
| Input Filter | 10 microseconds |
| "0" Signal Voltage | -3 to +5 V |
| "1" Signal Voltage | 11 to 30 V, 6 mA input current (EN 61131-2, type 3) |
| Rated Load Voltage | 24 V DC (-15% / +20%) |
| Max. Output Current | 0.5 A per channel, individually short-circuit proof, sum 4 A |
| Load Types | Ohmic, inductive, lamp load |
| Switching Times (Typical) | TON: 60 microseconds, TOFF: 300 microseconds |
| Current Consumption from US | Typical 130 mA |
| Electrical Isolation | 500 V |
| Dimensions (W x H x D) | 60 mm x 126 mm x 26.5 mm |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Housing Material | PA6 (Polyamide) |
| Weight | Approx. 250 g |
| Interface Type | Connector Description |
|---|---|
| EtherCAT Bus | 2 x M8 socket, shielded, screw connection |
| Digital I/O | 16 x M8 female socket, 3-pin, A-coded |
| Power Supply Feed | 1 x M8 male socket, 4-pin |
| Power Downstream | 1 x M8 female socket, 4-pin |
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Returns & Warranty

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Returns & Warranty
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| Country of origin |
Germany
|