Analog Devices UG-061, Руководство пользователя

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UG-061 Evaluation Board User Guide
Rev. 0 | Page 6 of
CONNECTING THE EVALUATION BOARD
Figure 4 shows a picture of the EVAL-ADE7169EBZ-2/
ADE5169EBZ-2 board with the communication and power
ports highlighted.
POWER SUPPLIES AND LOAD
Power can be supplied to the EVAL-ADE7169EBZ-2/
ADE5169EBZ-2 board by using the 9 V dc power adaptor that
is supplied with the evaluation kit. Connect the power jack to
the on-board connector shown in Figure 4. Next, insert the plug
into a 220 V or 110 V mains wall socket to provide power.
Refer to the Analog Inputs (P3 and P11) section for instructions
on how to connect the current and voltage signals to the chip,
and note the safety instructions (see the Safety section).
COMMUNICATIONS
Communication with the PC can be achieved using the USB-to-
UART converter (ADE8052Z-DWDL1). This USB-to-UART
board is isolated and, therefore, safe to connect directly to the
PC even if the ground of the evaluation board is tied to 220 V,
as is the case when a shunt is used as the current sensor.
However, caution must be used (see the Safety section). The
location of these connectors is shown in Figure 4. Connect the
other end of the cable to a USB port on the PC. Prior to using
the USB-to-UART board, the driver must be installed. See the
Installing the Drivers section for full details on the installation
procedure.
SAFETY
Exercise caution when connecting current or voltage sensors
directly to the 220 V mains supply because the ground of the
EVAL-ADE7169EBZ-2/ADE5169EBZ-2 may become live, thus
creating the potential for electric shock. It is recommended to
use an isolation transformer when working with the mains for
safety reasons. Note that if an external dc supply is used with an
isolation transformer on the mains, then the ground of the dc
supply must not be connected to earth ground. If this condition
occurs, then the isolation in the isolation transformer is bypassed.
The mains should not be energized before verifying the connec-
tion of the analog inputs is correct (see Figure 5 to Figure 9 in
the Analog Inputs (P3 and P11) section), according to the current
sensor type. In addition, JP4 on the voltage input should be
verified to be open before using the mains connection to prevent
damage to the IC. If connecting the board to external equipment
such as a PC, ensure that the communication channel is isolated
using the USB-to-UART converter. The evaluation board and
communication boards should not be handled when the supply
is connected.
UART
DC9V
08600-
004
Figure 4. Evaluation Board External Connections