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
As it can be observed, as soon as BRKS signal goes to ON, L144 timer starts to count. On the other
hand, as soon as mechanical brake opens torque (output current) increases but some time is needed
to stabilize torque at zero speed. When L144 timer is elapsed, because torque is between levels L146
and L147, output function LCF is going to ON state. This is understood as full load inside the car.
LCF is kept to ON until current (torque) is completely removed from the motor. When current is
removed from the motor it is understood that travel is finished. LCF signal will go to OFF when
travel is finished.
■
Load cell function (LCO detection level) (L147)
Torque level set on this parameter will be understood as, torque needed to keep zero speed when car
is in overload.
In order to set L147 correctly, please check torque at zero speed when maximum load allowed is
inside car after rollback is compensated.
Speed
(mm/s)
Run command
(FWD, REV)
ON
BRKS
L144
Mechanical brake
Opened
ON
EN1&EN2
ON
Torque
(%)
L147
LCO
ON
Figure 3. Overload detection level (
LCO
)
As it can be observed, as soon as
BRKS signal goes to ON, L144 timer starts to count. On the other
hand, as soon as mechanical brake opens torque (output current) increases but some time is needed
to stabilize torque at zero speed. When L144 timer is elapsed, because torque is over L147 level,
output function LCO is going to ON state. This is understood as full load inside the car. LCO is kept
to ON until current (torque) is completely removed from the motor. When current is removed from
the motor it is understood that travel is finished.
LCO
signal will go to OFF when travel is finished.
On the other hand, because of a faster reaction, an inverter alarm can be selected. When inverter is in
alarm mode, it disables output circuit (current) and brake is applied. This behavior can be set on
function code L143.On figure 4, overload detection with LCO alarm is shown
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