BECKHOFF EP1908 - Manual (Page 16)

Operation
14 EP1908-0002
4.1.5 Connection
4.1.5.1 Tightening torque for plug connectors
The plug connectors should be tightened with the recommended torque.
Type Connection Nm ft-lb
M8 Power supply, EtherCAT 0.4 0.3
M12 Input signals 0.6 0.44
Torque wrench
Note
Ensure the proper torque is used
Use torque wrenches available from Beckhoff to tighten the plug connectors (see
accessories)!