7
Inspection and maintenance
122
07.2020
ba
-o
.2
.6
.0
-us
-3
.2
-ys
|
A1
18
67
50
1 Re
v A
E
Adjustment tool for geared limit switch
(Ordering no. A0443050990)
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 switc
hing points with the “adjustment tool for geared limit switch”.
Dim.
[in]
a
*1
50 Hz
60 Hz
Reeving
1PS
1PD
5.1
5.9
1
2PS
2PD
2.8
3.1
2
4PS
4PD
1.6
2
4
b
YK
/SK
with
frequen
cy
in
ve
rter
b = V × t × 0.023
ft
V = Hoist speed [fpm]
t = Brake ramp [s]
(Factory setting = 1.5 s
)
Example:
YKC/SKC-L05-
…S2
64
-V
b = 64 × 1.5 × 0.023 = 2.2
ft
c
*1
2.4
d
4.7
e
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
)
See section
7.15.1 Geared limit switch - version 1
Adjusting emergency hoist limit switching, “top” (A
)
See section
7.15.1 Geared limit switch - version 1
Adjusting the fast/slow switching “top” (B
)
See section
7.15.1 Geared limit switch - version 1
