Installation Position For Operation With Or Without Fan; Fig. 24 Power Contact On Left Side - Beckhoff EL72 1-901 Series Manual

Installation
Fig. 24: 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!
4.7

Installation position for operation with or without fan

Constraints regarding installation position and operating temperature range
When installing the terminals ensure that an adequate spacing is maintained between other components
above and below the terminal in order to guarantee adequate ventilation!
Prescribed installation position for operation without fan
The prescribed installation position requires the mounting rail to be installed horizontally and the connection
surfaces of the EL/KL terminals to face forward (see Fig. "Recommended distances of installation position for
operating without fan").
The terminals are ventilated from below, which enables optimum cooling of the electronics through
convection.
40
NOTE
WARNING
NOTE
Version: 1.9 EL72x1-901x