Manufacturer: BECKHOFF
Product No.: EJ1957
Country of origin:Germany
Product Type: Safety I/O Modules
Payment: T/T, Western Union
Weight: 500g
Shipping port: Xiamen
Warranty: 12 months
Engineered for high-density safety installations within automated systems, the Beckhoff EJ1957 functions as a high-reliability TwinSAFE plug-in module that links safe digital input and output signals directly over an EtherCAT backplane. Operating within the modular EJ design framework, this module enables machine builders to achieve compact panel configurations and rapid assembly times by mounting directly onto application-specific signal distribution boards. The unit processes standard and safety-critical signals using the Safety over EtherCAT (FSoE) protocol, guaranteeing functional safety compliance up to SIL 3 and PL e levels.
| Manufacturer | Beckhoff Automation |
| Model Number | EJ1957 |
| Module Type | TwinSAFE EtherCAT Plug-in Module |
| Number of Safe Inputs | 8 |
| Number of Safe Outputs | 4 |
| Protocol | TwinSAFE / Safety over EtherCAT (FSoE) |
| Current Consumption E-bus | Typical 330 mA |
| Response Time | Typical 4 ms (read input / write to E-bus) |
| Fault Response Time | Less than or equal to watchdog time (parameterizable) |
| Safety Standards | EN ISO 13849-1:2015 (Cat. 4, PL e), EN 61508:2010 (SIL 3) |
| Protection Rating | IP20 (when fully plugged into distribution board) |
| Country of Origin | Germany |
| Shipping Weight (Calculated) | 0.25 kg (including standard protective industrial packaging) |
Unlike standard Beckhoff EL-series terminals, the EJ-series plug-in modules are physical board-level components and require a matching signal distribution board (backplane). The EJ1957 serves as a consolidated board-level equivalent to utilizing separate safe input and output terminals (such as the EL1904 and EL2904) in conventional DIN-rail setups, drastically reducing point-to-point physical wiring and assembly footprint.
The E-bus current consumption of the EJ1957 is relatively high at typical 330 mA. System engineers must carefully calculate the power budget of the distribution board's local E-bus feed. If several high-draw modules are placed in a single segment, an auxiliary power supply plug-in module must be specified to prevent communication drops or safety-loop faults under full load.
When configuring the EJ1957 in TwinCAT 3, ensure that the watchdog parameter is matched precisely to your system's processing cycle and network physical length. Setting the watchdog time too low may result in intermittent spurious trips (FSoE watchdog expiration errors) caused by minor fieldbus jitter, while setting it too high extends safety response times.
CRITICAL SAFETY WARNING
De-energize all primary, control, and auxiliary electrical supplies before inserting or extracting the plug-in card. Static-sensitive devices exist on this module; enforce strict ESD handling procedures. Failure to align coding pins prior to insertion may result in permanent mechanical damage to the distribution board contacts.
Ensure the signal distribution board is securely mounted to its enclosure substrate and completely powered down.
Align the EJ1957 guide pins with the matching keyways on the application-specific distribution board.
Press the module firmly downward until the physical lock is engaged. Verify there is no gap between the module base and the board headers.
Apply bus power and configure safe communication links using TwinCAT System Manager software.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|
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