ALPHA Electro
www.pipistrel-aircraft.com
REV.0
POH-167-00-40-150
EPSI570 user action guide
Warning and Caution messages
CAUTION (orange) User action
BATTERY 1/2 OVERTEMPERATURE
(at battery temp. 45°C)
- Reduce power
- Monitor battery temperature
- Land as soon as practical if the problem persists
SOC < 10%
- Power lever cut o
- Land as soon as practical - monitor the residual %SOC (bat-
tery will disconnect by itself, depends on the cell voltage)
BATTERY 1/2 SOC ADJUSTED
This message indicates that a SOC estimation failure has occurred. The
SOC will be updated to a more conservative and safe value. Reset the
message by pressing the knob.
- Change the ight plan according to the updated SOC value.
WARNING (red) User action
ONLY ONE BATTERY PACK IS ACTIVE
This warning appears when power controller is ON and when motor
RPM exceeds 300. This message is meant to avoid the possibility of tak-
ing o with only one pack active.
- if appears while on the ground: do not takeo
- if appears during ight: reduce power to 35 kW or less. Land
as soon as practical
BATTERY 1/2 NOT PRESENT
This warning means that the battery is not detected by the system.
- If this occurs on the ground do not take-o and check bat-
tery installation
- If this occurs in ight reduce power to 35 kW or less, land as
soon as practical
BATTERY 1/2 DISCONNECTED DUE
TO [DISC CURRENT, CHG CURRENT,
OVERTEMP, INTERLOCK, UNDER-
VOLTAGE, OVERVOLTAGE]
OVERTEMPerature (at 55°C), DISCharge CURRENT and cell UNDERVOLT-
AGE warnings only appear while ying. The message indicates that the
system has automatically disconnected a battery pack due to the reason
described.
- Reduce power immediately to 35 kW or less (battery will dis-
connect by itself) and land as soon as practical
BATTERY 1/2 DISBALANCED REDUCE
POWER
- Reduce power
- Reset message and monitor system status
BATTERY 1/2 STARTUP FAILED EC: [X]
This warning appears after turning the power enable switch on during
ground operation. »X« represents the error number.
- Do not take-o
- NOTE the number
- Report error number to technical support at
maintenance@pipistrel.si
DRIVE OVERTEMPERATURE
This warning appears when maximum power controller or motor tem-
perature is exceeded.
- Reduce power immediately (to minimum possible)
- Monitor motor/power controller temperature
- Land as soon as practical if the problem persists but power is
still available (possible power reduction)
- Land as soons as possible (emergency) if power is cut o by
the system
DRIVE TEMPERATURE SENSOR
FAILURE
WARNING! The power controller may reduce power to 0 if and
when sensor failure happens.
- Land as soon as possible
Emergency procedures
3-7