CEMB TR-NC/8, Инструкция по эксплуатации и обслуживанию

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14
TR-NC/8 - R
ev
.02/2013
If an inverter is present, it is advisable to use filters to eliminate the disturbances emitted or a separate circuit to supply the
control devices. In fact, when a “sensitive” instrument is supplied by an electrical power source common to several devices,
the disturbances generated by the power devices are transmitted to the control devices via the common power supply lines.
An unpainted reference earth plate should be installed at the bottom of the electric cabinet.
The metal sheet or grille used should be connected at various points to the frame of the metal cabinet.
All the components should be directly bolted onto this earth plate.
Take particular care in choosing the cable clamps as they must ensure a secure shield connection.
5.2.2 W
iring
The sensor connection cables should not be laid parallel to or together with inductive load power conductors or motor power
cables. The cables must be laid in separate cable ducts at least 15 cm apart.
Should the power and control cables need to run through common points, they must be perpendicular to each other at the
point where they cross.
All the connections must be as short as possible, as the floating lines function as active and passive antennas.
Keep a distance of > 100mm from the conductors, which are a source of disturbance.
If using a cable with a larger number of conductors than necessary, all the unused conductors must be connected to earth
together with the shield.