5.3.4.4 Connecting the screw-type terminals
WARNING
Hazardous Voltage
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltages can cause electric shock, burns and damage.
• Turn o and lock out all power supplying the system and device before working on the
device.
• To ensure protection against the hazard of electric shock when the terminal cover is open,
screw in all terminal screws that are not needed to clamp conductors.
• Close the terminal covers and always keep them closed during operation.
Note
Functional ground - protective ground conductor
Terminal FE must be connected to functional ground with a low-resistance connection.
Requirements
• Cross-tip screwdriver size PZ 1 x 80
• For suitable connection cross-sections of the cables, see Chapter Technical data (Page 365).
Procedure
Step Instructions Figure
1 Insert the relevant cable into square on the
screw terminal until it engages.
2 Hold the cable in the screw terminal.
3 Tighten the screw with a torque of 0.6 … 0.8 Nm.
4 Pull on the cable to ensure it is screwed tight.
5.3.4.5 Disconnecting the screw-type terminals
WARNING
Hazardous Voltage
Can Cause Death, Serious Injury, or Property Damage.
Before starting work, therefore, disconnect the system and devices from the power supply.
Description of the hardware
5.3 Connecting / wiring
SIRIUS 3RK3 Modular Safety System
162 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
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