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
b) Brake feedback not matching with brake control signal at stop
ON
Speed
0
High speed
Creep speed
FWD
SS1
SS2
SS4
ON
ON
ON
ON
BRKE1
Brake1
Release
BRKS
ON
Stop speed(F25)
H67
L82 L84 L83 L84
BRKE2
ALM
Brake2
Release
ON
ON
ON
EN (EN1,EN2)
ON
Inverter trips bbE.
Figure 2.
bbE
alarm at stop.
As it can be observed in figure 2, because brake 2 remains open even signal
BRKS is OFF, inverter
is tripping
bbE
alarm at stop.
c)
Brake feedback not matching with brake control signal during travel
ON
Speed
0
High speed
Creep speed
FWD
SS1
SS2
SS4
ON
ON
ON
ON
BRKE1
Brake1
Release
BRKS
ON
Stop speed(F25)
H67
L82 L84 L83 L84
BRKE2
ALM
Brake2
Release
ON
ON
ON
ON
EN (EN1,EN2)
ON
ON
L84
Alarm is internally generated.
Inverter trips bbE.
Figure 3. bbE alarm at stop due to brake monitoring problem during travel.
As it can be observed in figure 3, brake 1 feedback contact is not working properly. Even real brake
status is opened, it shows for a certain periode that brake is not opened (contact chattering). After
timer L84 is elapsed, inverter generates internally an alarm that is shown at the end of the travel.
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