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
UPS PIco HV3.0 FAN Control (Active Cooling System)
The UPS PIco HV3.0 can be equipped with Active Cooling System based on micro FAN
and dedicated temperature sensor. The PIco FAN is full PWM controlled rotation
speed from 0% up to 100%. It can be manually set ON or OFF on per-selected speed,
as also automatically based on preset temperature threshold. It can be done via the
following registers placed at the I
2
C address 0x6b (0x11, 0x12, 0x13).
0x11
fmode
Byte
Common
R/W
Integrated Fan Running Mode
Read:
Anytime, Return actual
fmode
value
Write:
0x00
–
Unconditional Disable the FAN with
selected speed from the
fspeed
Write:
0x01
–
Unconditional Enable the FAN FAN
with selected speed from the
fspeed
Write:
0x02
–
Automatic ON/OFF with defined
speed in the fspeed, ON when temperature read in
sensor T0-92 is higher than
fttemp
threshold, OFF
when lower.
Default value is set to 0x02
–
Automatic ON/OFF
When written 0x02 to this register data are stored
in the internal EEPROM. So, even if UPS PIco
HV3.0 will be reset, automatic setup will be
recovered. All other data (0x00, or 0x01) are not
stored in the internal EEPROM.
When UPS PIco is going down to the LPR mode,
the FAN is automatically disabled, and enabled
again when the UPS PIco returns to normal work
0x12
fspeed
Byte
Common
R/W
Integrated Fan Speed
Read:
Anytime, Return actual
fspeed
value
Write:
00
–
Selected speed when OFF is 0% (not
running)
Write:
100
–
Selected speed when ON is 100% (full
speed running)
Any other (0-100) number is allowed and means
% of speed and current consumption
Default speed is set to 50%
Any data written to this register are stored in the
internal EEPROM. So, even if UPS PIco HV3.0 will
be reset, will be recovered.
0x13
fstat
Byte
Mirror
Read
Read:
Anytime, Return actual
if FAN
is actually
running or not (for remote users)
When FAN is set to be running (even if not
connected physically) the FAN LED is lighting. The
intensity of the FAN LED is depending of the FAN
Speed (PWM)
