Beckhoff EJ6910, Руководство по эксплуатации

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Operation
EJ6910 16 Version: 1.7.0
4.2.3.2 Installation position and minimum distances
For the prescribed installation position the backplane is mounted horizontally (EJ plug connector vertical),
and the connection surfaces of the EJ modules face forward (see diagram below). The EJ modules are
ventilated from below, which enables optimum cooling of the electronics through convection. The direction
indication “down” corresponds to the direction of positive acceleration due to gravity.
Fig. 4: Installation position and minimum distances
In order to ensure optimum convection cooling, the distances to neighboring devices and to control cabinet
walls must not be smaller than those shown in the diagram.
4.2.3.3 Temperature measurement
The temperature measurement consists of an EJ1100 EtherCAT coupler, to which EJ modules are attached,
based on the typical distribution of digital and analog signal types at a machine. On the EJ6910 a safety
project is active, which reads safe inputs and enables safe outputs during the measurement.
Note
External heat sources / radiant heat / impaired convection
The maximum permissible ambient temperature of 55°C was checked with the sample con-
figuration described above. Impaired convection; an unfavorable location near heat sources
or an unfavorable configuration of the EtherCAT EJ modules may result in overheating of
the modules.
The key parameter is always the maximum permitted internally measured temperature of
110°C, above which the TwinSAFE components switch to safe state and report an error.
The internal temperature can be read from the TwinSAFE components via CoE.