23
MANUGENEX7xx
Operating Instructions
VER 2.00
6 Power Supply, Grounding and Shielding
The power supply terminal block is shown in the figure below.
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 1M
Ω
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.
Power Supply, Grounding and Shielding
Fig. 6.2
All the electronic devices in the control system must be properly grounded. Grounding must be performed
according to applicable regulations.
Fig. 6.1
3 conductor 1,5mmq wire size minimum, minimum temperature conductor rating 105°C.
