Siemens SINAMICS V50 - Page 74

Fault information and trouble shooting
73
SINAMICS V50 converter
Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
Trip
code
Trip Type Possible causes Solutions
ECE Encoder fault
1. Encoder signal wires
are connected
reversely.
2. Encoder signal wires
get damaged.
3. Encoder damaged.
4. Dual-way encoder
detected motor
direction is not match
with drive direction.
1. Check whether the
encoder signal is correctly
connected.
2. Check whether the
encoder wiring is broke.
3. Change the encoder.
4. Change the encoder
direction (F3.16) or alter
motor wiring sequence.
LC
Fast current limit
fault
1. Load too large or
motor blocked to stall
2. Drive power rating
too small
3. Drive output circuit
loop grounded or SC.
1. Decrease the load and
check motor and mechanical
part status
2. Choose higher power
drive
3. Remove the external fault
EF2
Terminal close
fault
1. The FWD or REV
terminals close and get
power on. But drive is
set to not allow the
restart after power
failure recovery.
1. Disconnect the FWD or
REV terminal first and then
power on the drive.
2. Close the fault detection
function for closed terminal
fault (FC.11=0)
PIDE PID feedback error 1. PID feedback offline
1. Check PID feedback line.
2. Disable PID feedback
detection (F8.24=0.0%)
3. Increase PID feedback
offline detection time
(F8.25)
OLP2
Overload pre-
alarm error
1. Frequency drive
output current is
higher than set pre-
alarm threshold
1. Disable pre-alarm
function(FC.19=0)
2. Increase pre-alarm
threshold value (FC.02) 3.
3. Increase pre-alarm
detection time(FC.03)