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4.
ELECTRIC CONNECTIONS
4.1
Arrange the wiring and the grounding according to the local norms in force.
4.2
To access the inner terminal board and for the electric connections, remove the
cover loosening the 4 fastening screws.
4.3
Two threaded holes for cable pressers Pg 13.5 are already arranged on the
base of the electric actuator.
4.4
Before servicing make sure, that power supply is disconnected by means of the
two-pole-switch [phase and neutral]; in case of non-observance, damages to
people and equipments may occur.
4.5
All wires must comply with local prescriptions and, in any case, their section
must be ranging between 1 and 1.5 mm
2
. Connection piping recommended
H07V-U…G1.5 mm
2
.
4.6
Wiring diagrams are reported in the attached technical bulletin and on the plate
inside the cover.
4.7
Auxiliary microswitches are single-pole double through and voltage-free.
4.8
If a potentiometer is installed, its resistance value is indicated on the
nameplate.
4.9
Make sure the supply voltage and the system frequency correspond to those
indicated on the valve plate.
4.10
Low-tension signalling cable [tension lower than 48V] must be laid separately
from the higher-tension conduits [tension higher than 48V]. In case they are
laid in a single channel, screened cables must be used.
