Fuji Electric FRENIC-Lift LM2 Series User Manual

Page 24 of 28 Fuji Electric Europe GmbH
12. Lift fine tuning (troubleshooting)
The typical problems have been divided in three different zones: starting, travel and stopping. Figure 14.1 shows a
standard lift travel divided in the three areas.
Speed
ON
ON
Time
ON
Starting StoppingTravel
Figure 14.1. Standard lift travel divided in three zones
TROUBLESHOOTING (Starting)
ROLLBACK
CAUSE
ACTION
Insufficient starting frequency
Increase F23
Max. F23=1.0 Hz
Early brake opening
Increase L82
Max. L82=F24 – Brake reaction time
Insufficient torque
Increase P06
P06=30~70% of P03
Increase F09
Max. F09=5.0%
HIT AT
STARTING
CAUSE
ACTION
Too high starting frequency
Reduce F23
Min. F23=0.1 Hz
Late brake opening
Reduce L82
Min. L82=0.20 s
Increase F24
Max. F24=1.5 s
Too high torque
Reduce P06
P06=30~70% of P03
Not related to inverters setting
Check brake operation
Check guides (oil, alignment, etc.)
Check car fixation (shoes)
TROUBLESHOOTING (Travel)
VIBRATION AT
CONSTANT
SPEED
CAUSE
ACTION
Too high torque
Decrease P06
P06=30~70% of P03
HIGH speed too fast
Reduce HIGH speed (i.e. C11)
Set motors rated speed instead of motor synchronous
speed
Not related to inverters setting
Check guides (oil, alignment, etc.)
Check car fixation (shoes)
Check motor connection (Δ or )
Check motor gearbox
UNDERSHOOT
FROM HIGH
SPEED TO
CREEP SPEED
CAUSE
ACTION
Slip frequency too high
Reduce P12
Min. P12=0.1 Hz
Deceleration too fast
(NOTE: Control that creep speed is
kept)
Increase deceleration ramp (i.e. E13)
Max. E10-E16, F07-F08=2.00 s
Increase 2nd S-curve at deceleration (i.e. L25)
Max. L19-L28, H57-H60=50 %
Insufficient torque
Increase P06
P06=30~70% of P03
Increase F09
Max. F09=5.0%

Fuji Electric FRENIC-Lift LM2 Series Specifications

General

Brand	Fuji Electric
Model	FRENIC-Lift LM2 Series
Category	Inverter
Language	English