Installation Instructions For Enhanced Mechanical Load Capacity; Fig. 20 Power Contact On Left Side - Beckhoff EL1052 Documentation

Mounting and wiring
Fig. 20: Power contact on left side
Possible damage of the device
Note that, for reasons of electromagnetic compatibility, the PE contacts are capacitatively coupled to the
mounting rail. This may lead to incorrect results during insulation testing or to damage on the terminal (e.g.
disruptive discharge to the PE line during insulation testing of a consumer with a nominal voltage of 230 V).
For insulation testing, disconnect the PE supply line at the Bus Coupler or the Power Feed Terminal! In or-
der to decouple further feed points for testing, these Power Feed Terminals can be released and pulled at
least 10 mm from the group of terminals.
Risk of electric shock!
The PE power contact must not be used for other potentials!
4.3 Installation instructions for enhanced mechanical load
capacity
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, de-energized state before starting mounting, disassembly or
wiring of the Bus Terminals!
Additional checks
The terminals have undergone the following additional tests:
Verification
Vibration
Shocks
28
NOTE
WARNING
WARNING
Explanation
10 frequency runs in 3 axes
6 Hz < f < 60 Hz displacement 0.35 mm, constant amplitude
60.1 Hz < f < 500 Hz acceleration 5 g, constant amplitude
1000 shocks in each direction, in 3 axes
25 g, 6 ms
Version: 1.1 EL1052, EL1054