UPS PIco HV3.0A Firmware Code 040 Print Date 18.08.2017
Designed and Manufactured by PiModules and ModMyPi
www.pimodules.com www.modmypi.com
If user decide to use Higher Voltage Interface as pre-scaled of 0-10V, 0-20V, or 0-30V
the
Terminal Blocks PCB
should be used, or an
additional resistor
need to be added
externally, like in the below pictures. In addition, the register
setA_D (0x08)
at address
0x6b
should be set to a proper value according the below table to keep the proper
voltage conversion. If user not like to use embedded voltage converter, then it is
needed to disable it via a proper command and read the raw data directly from the
related register. All A/D readings have internal reference of 2.048V and are filtered by
the firmware with “Olympic Score” and “Low Pass” Filtering.
Caution:
The
UPS PIco HV3.0
has implemented an ESD protection on each A/D
converter input. This protection protects the system from ESD discharges and
does
not
from continuously high voltage applied.
Therefore, it is very important if High Voltage used (10V, 20V or 30V), to be sure that
a proper resistor(s) has been used. If smaller resistor(s) that required will be used,
then the A/D input will be destroyed permanently, and very possible also the whole
UPS PIco HV3.0 HAT PCB
Therefore, user need to take care to be sure that a proper values of resistor(s) has
been used.
