7
Inspection and maintenance
118
07.2020
ba
-o
.2
.6
.0
-us
-3
.2
-ys
|
A1
18
67
50
1 Re
v A
E
Preparatory work
Remove the screws on the hood of the geared limit switch.
Remove the hood.
NOTICE
The geared limit switch can be damaged if an electric screwdriver is used to
set the switching points.
➢
Only adjust the switching points with the “adjustment tool for geared limit switch”.
Adjustment tool for geared limit switch
(Ordering no. A0443050990)
Dim.
[in]
a
*1
50 Hz
60 Hz
1PS
1PD
5.1
5.9
2PS
2PD
2.8
3.1
4PS
4PD
1.6
2
b
b = a
c
*1
2.4
d
Effective hook path
*1
With the option
hook operated
hoist limit switch
(see section 4.12),
dimension “a” increases by 3.9
in,
dimension “c” increases in accordance with
the table.
Type
Dimension “c”
enlargement
[in]
YKA/SKA, YKB/SKB
2
YKC/SKC, YKE/SKE
3.9
YKD/SKD
5.9
Adjusting operational hoist limit switching, “top” (B
)
1st
Actuate the UP-button in the control pendant with caution.
Hoist the load hook to 0.39 in in front of the switch-off point (B
).
–
(Observe the minimum distance “a” + “c” between the hook block and
the next
obstacle or hook aperture “C” (see section
7.15), depending on the dimension at
which the hook hangs lower.
–
If the operational hoist limit switch should switch off beforehand, turn the
adjustment screw “S3”
clockwise 1 revolution and repeat step 2.
Turn the adjustment screw “S3”
anticlockwise until the switch contact latches audibly.
Actuate the DOWN-button in the control pendant.
–
The “top” op
erational hoist limit switching position has been set.
