Beckhoff EtherCAT Plug-in modules - EJ1957 | 8-channel digital input, 4-channel digital output, 24 V DC, TwinSAFE
8-channel digital input, 4-channel digital output, 24 V DC, TwinSAFE EJ1957

EJ1957 | 8-channel digital input, 4-channel digital output, 24 V DC, TwinSAFE

The EJ1957 EtherCAT plug-in module is a digital input and output module for sensors with potential-free contacts for 24 V DC. The plug-in module has eight fail-safe inputs, four fail-safe outputs and meets the requirements of IEC 61508 SIL 3 and DIN EN ISO 13849 PL e.

Technical data EJ1957
Safety standard EN ISO 13849-1:2015 (Cat. 4, PL e) and EN 61508:2010 (SIL 3)
Number of inputs 8
Number of outputs 4
Protocol TwinSAFE/Safety over EtherCAT
Nominal voltage 24 V DC (-15 %/+20 %)
Response time typ. 4 ms (read input/write to E-bus)
Fault response time ≤ watchdog time (parameterisable)
Current consumption E-bus typ. 330 mA
Bit width in the process image input: 6 byte; output: 6…7 byte
Special features 8 safe inputs, 4 safe outputs
Weight approx. 64 g
Dimensions (W x H x D) 12 mm x 152 mm x 55 mm
Operating/storage temperature -25…+55 °C/-40…+70 °C
Relative humidity 95 %, no condensation
Climate class EN 60721-3-3 3K3
Permitted degree of contamination 2
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protection class IP 20
Approvals CE, TÜV SÜD
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