ECP
300
EXPERT STEPPER
Page 12
OPERATION AND MAINTENANCE MANUAL
Rev. 01-20
ELECTRICAL CONNECTIONS
❑
For electrical connections refer to the specific wiring diagram and the
technical characteristics of the panel model to be installed.
❑
The power supply to the panel must be carried out exclusively with a
dedicated line, upstream of which a device suitable for protection from
indirect contacts (differential switch) must be installed.
❑
Avoid housing power cables together with signal cables (probes and digital
inputs) in the same ducts (or tubes).
❑
Avoid using multi-pole cables in which conductors connected to inductive
and power loads and signal conductors are present, such as probes and
digital inputs.
❑
Reduce the lengths of the connection cables as much as possible, avoiding
that the wiring takes on the shape of a spiral capable of possible inductive
effects on the electronics.
❑
If it is necessary to move the probes farther, it is necessary to use
conductors of appropriate cross-section and in any case not less than 1
mm
2
.
❑
Cables with a section suitable for the current passing through them must be
used for connections to the panel. Similarly, the degree of insulation must be
compatible with the voltages applied. Cables with flame-retardant insulation
and low toxic smoke emissions are preferable if affected by fire.
❑
It is
mandatory
to connect the terminal marked
PE
to the ground system of
the power supply network. If necessary, check the efficiency of the earthing
system.
❑
Other conductors must not be connected to the
PE
terminal except for the
external protection conductor.
3.3
CHAP. 3 - Installation
