7
Inspection and maintenance
07.2020
123
ba
-o
.2
.6
.0
-us
-3
.2
-ys
|
A1
18
67
50
1 Re
v A
E
Adjusting operational hoist limit switching, “bottom” (B
)
Actuate the DOWN-button in the control pendant with caution.
Lower the load hook to 0.39 in in front of the switching point (observe the minimum
distance “d”).
–
If the operational hoist limit switch should switch off beforehand, turn the
adjustment screw “S6”
anticlockwise 1 revolution and repeat step 2.
Turn the adjustment screw “S6”
clockwise until the switch contact latches audibly.
Actuate the UP-button in the control pendant.
–
The “bottom” operational hoist limit switching position has been set.
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 4.11),
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 emergency hoist limit switching,
“bottom” (A
)
The “bottom” operational hoist limit switching position must be set.
Actuate the DOWN button in the control pendant with caution.
Observe the hoisting movement, until operational hoist limit switching (B
) switches
off in the bottom hook position.
