Common Fault Analysis - Salicru CV50-008-4F User Manual

Fault
Fault type
code
Keypad
PCE communication
fault
Parameters
DNE
downloading fault
Electronic
LL
underload fault
8.5.2 Other states
Fault
Fault type
code
PoFF System power off

8.6 Common fault analysis

8.6.1 The motor does not work
Fault Tracking
Possible cause
 The connection of the keypad wires
is not good or broken
 The keypad wire is too long and
affected by strong interference
 There is circuit fault on the
communication of the keypad and
main board
 The connection of the keypad wire is
not good or broken
 The keypad wire is too long and
affected by strong interference
 There is a mistake on the data
storage of the keypad
 The inverter will report the underload
pre-alarm according to the set value
Possible cause
System power off or the bus voltage
is too low
What to do
 Check the keypad wire and ensure
whether there is mistake
 Check the environment and avoid
the interference source
 Change the hardware
 Check the keypad wire and ensure
whether there is mistake
 Change the hardware
 Repack-up the data in the keypad
 Check the load and the underload
pre-alarm point
What to do
Check the grid
99 - 144