Dillon DynaSwitch - Manual (Page 10)

10
2-3
Dynaswitches &
Reeving Setups Below are some examples of hoist and reeving setups which use the
Dynaswitch for control and/or safety purposes.
Figure 2-A
2 ropes, 2 part single
reeving
With two parts of line to the hook,
the Dynaswitch should be installed
in series between wire rope and its
dead end point. Microswitch is set
for ½ maximum capacity of the
hoist.
Figure 2-D
The Dynaswitch may also be placed
between hoist and trolley with
microswitch set for maximum
capacity of the hoist and trolley.
Figure 2-B
Figure 2-C
4 ropes, 4 part single
reeving
As shown at right, Dynaswitch is
installed in series with rope to the
dead end. The microswitch is set
for ¼ capacity of the crane because
there are four parts of line to the
hook.
Frictional reactions within the
sheaves may prevent all parts
of the lines from having identi-
cal tension. While generally
suitable for overload protection,
it may give unsatisfactory
results for weighing or batch
control.