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80587_eView HD_02-2019_ENG
6. POWER SUPPLY, GROUNDING AND SHIELDING
The power supply terminal block is shown in the figure below.
Figure 6.1
3 conductor 1,5mmq wire size minimum, minimum temperature conductor rating 105°C.
Note: Ensure that the power supply has enough power
capacity for the operation of the equipment.
The unit must always be grounded to earth with 1,5mmq wire
size minimum. Grounding helps limit the effects of noise due
to electromagnetic interference on the control system.
Earth connection will have to be done using either the
screw or the faston terminal located near the power supply
terminal block. A label helps identify the ground connection.
Also connect to ground the terminal 3 on the power supply
terminal block.
The power supply circuit may be floating or grounded. In the
latter case, connect to ground the power source common as
shown in figure (see below) with a dashed line. When using
the floating power scheme, note that the panes internally
connects the power common to ground with a 1MΩ resistor
in parallel with a 4,7nF capacitor.
The power supply must have double or reinforced insulation.
The suggested wiring for the power supply is shown below..
Figure 6.2
All the electronic devices in the control system must be properly grounded. Grounding must be performed according to
applicable regulations.
