Fuji Electric Frenic lift, Reference Manual

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2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
■
Lower the carrier frequency automatically (Bit 0)
Even if the inverter heat sink overheated or is in overload state due to an excessive load, abnormal
ambient temperature, or a problem in the cooling system, with this function enabled, the inverter
lowers the carrier frequency to avoid tripping (OH1, OH3 or OLU). Note that if this feature is
enabled, the motor noise increases. If an overload state is kept for a long time surpassing the inverter
capacity, the inverter trips.
■
Detect input phase loss (Lin) (Bit 1)
Upon detecting an excessive ripple on the DC link voltage, because of phase loss or inter-phase
imbalance in the 3-phase power supplied to the inverter, this feature stops the inverter and displays
an alarm Lin .
In configurations where only a light load is driven or a DC reactor is connected, a phase
loss or an inter-phase imbalance may not be detected because of the relatively small
ripple on the DC link voltage.
■
Detect output phase loss (OPL) (Bit 2)
This function can detect the output phase loss. This function becomes effective by H98 bit2=1. OPL
is displayed when the loss is detected, and the inverter stops.
Output phase loss detection is operated before starting the operation. Fix the motor with the brake
while output phase loss detection is operated. When the output phase is lost, the inverter trips with
OPL alarm. OPL is not a recoverable alarm by the auto-reset function.
Automatic magnetic pole position tuning is operated after output phase loss detection is done when
automatic magnetic pole position tuning is effective.
RUN
signal is turned OFF during output phase loss detection
Operation sample
a) Multistep speed command (F01=0)
Gate
Run commnd
Starting speed
Starting speed
Setting speed
Reference speed
ON
L85
500ms
F24
0
0
EN ON
SW52-2 ON
ON
ON
Output phase loss
detection
BRKS
L82
H65
ON
H64
RUN ON
Gate
Run command ON
ON
500ms
0
EN ON
SW52-2 ON
ON
ON
Output phase loss
detection
BRKS
L82
Starting speed
Starting speed
Setting speed
Reference speed
L85 F24
0.1Hz
0
H64 H65
DC
output
RUN ON
Vector control with PG Torque Vector control
2-105