TwinSAFE Logic EL6900
Diagnostic 4
Diagnostic 2
Diagnostic 3 
Diagnostic 1 
Power contact
+24 V
Power contact 0 V
Top view 
Contact assembly 

EL6900 | TwinSAFE Logic

TwinSAFE enables networks with up to 1,024 TwinSAFE devices. The TwinSAFE Logic can establish 128 connections to other TwinSAFE devices. Multiple EL6900 are cascadable within a network. The EtherCAT Terminal features certified safety function blocks, which are configured according to the application to be realised. Safety functions such as emergency stop, safety door monitoring, two-hand control, etc. can thus easily be selected and linked. All blocks can be freely connected among each other and are complemented by operators such as AND, OR, etc. The required functions are configured via the TwinCAT System Manager and loaded into the EL6900 TwinSAFE Logic via the fieldbus. The EL6900 is suitable for applications up to SIL 3 according to IEC 61508 and DIN EN ISO 13849 PL e.

Technical data EL6900
Technology TwinSAFE Logic
Safety standard DIN EN ISO 13849-1:2008 (Cat 4, PL e) and IEC 61508:2010 (SIL 3)
Protocol TwinSAFE/Safety over EtherCAT
Status display 4 LEDs
Connections to other TwinSAFE devices max. 128
Function blocks max. 255
Cycle time 500 µs…~25 ms
Current consumption E-bus approx. 188 mA
Fault response time ≤ watchdog time (parameterisable)
Bit width in the process image 6…1,498 bytes
Supply voltage 24 V DC (-15 %/+20 %)
Nominal voltage 24 V DC (-15 %/+20 %)
Special features backup restore
Weight approx. 50 g
Operating/storage temperature -25…+55 °C/-40…+70 °C
Permitted degree of contamination 2
Climate class EN 60721-3-3 3K3
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
Installation position horizontal
Protection class IP 20
Approvals CE, UL, Ex, TÜV SÜD