Options; Limit Switch; Pressure Roll; Slack Rope Switch - haacon ESF Manual De Instrucciones

8. OPTIOnS

Some of the available equipment variations (options) are legal-
ly required.

8.1 limit switch

Consisting of limit switch and mounting set. The limit switch
counts the rotations of the drum. It contains two switching ele-
ments for limiting the upper and lower end position.
An end stop is required according to DIN EN 14492-1/2.
Selects the end stop in such a way, that:
> 3
GB
– Hooks, load carrying equipment, and load may not knock
against the rope winch or its supporting structure.
The accuracy of the end stop decreases with increasing
length of the reeled rope.
Adjusting:
z Remove protective cover
z Drive to the "lower" end position (rope unreeled). Adjust a
tappet with adjusting screw until the switch responds.
z Reel rope briefly, stop, unreel again and check "lower" end
position.
z Reel rope and drive to "upper" end position. Adjust the
other tappet with adjusting screw until the switch responds.
z Unreel rope briefly, stop, reel again and check "upper" end
position.
z Drive to the "lower" and "upper" end position again and
correct until end positions are reached satisfactorily.
z Assemble protective cover again.
The limit switch is correctly connected and approximately pre-
set, if the control unit is supplied by the factory. Otherwise it is
the responsibility of the operator to correctly connect the two
switching elements to the control unit.
The limit switch is a safety component.
– Examine regularly, however at least once annually, as well
as before commissioning.
094278_t_de_gb_fr_es_it_pt_eseilwi_s
> 1,5 x rope-Ø
Adjusting screws
haacon hebetechnik gmbh – Telefon +49 (0) 9375 - 84-0 – Fax +49 (0) 9375 - 84-66

8.2 Pressure Roll

Check the correct position (suitable for the cable outlet) before
initial commissioning. The spring pretension can be adjusted
via elongated holes.

8.3 Slack Rope Switch

Interrupts the drive, as soon as the rope loses its tension,
e.g. if the load jams when "lowering" or reaches the ground.
Prevents the rope coils jumping off the drum. Prevents during
renewed lifting cross layering of the rope. (rope damage).
not available for divided drums!



With known rope outlet, the slack rope switch has been adju-
sted in the factory.
z Adjust the switch before commissioning according to the
local conditions and check its function. For this purpose,
loosen screws  and rotate the arm appropriately. Then
tighten screws  again.
The slack rope switch has already been connected according
to the circuit diagram, if the control unit has been supplied by
the factory. Otherwise it is the responsibility of the operator to
correctly connect the switching element to the control unit.
The slack rope switch is a safety component.
– Examine regularly, however at least once annually, as well
as before commissioning.

8.4 Emergency Hand Operation

The motor brake starts automatically, if the power supply is
interrupted. The load movement is stopped immediately.
Lower load:
z Screw in brake lever, vent brake.
Lift load:
z Attach crank to motor, turn anti-clockwise , vent brake.
Emergency hand operation only when disconnected
from power supply.
Exceptional situation! Therefore special attention is
necessary. –>Safety instructions in Chapter 2.
Only assign instructed personnel.
Do not stay under suspended loads or in the danger
area. Secure danger zone.
LOWERING - NOTE!
The load starts moving independently after venting
the brake. The load is braked again by releasing the
brake lever. Do not exceed suitable lowering speed.
Only lower load step by step!
If necessary, use the provided crank for lowering.
LIFTING – NOTE!
Danger of injury by the attached crank, if this is not
sufficiently secured before venting the brake.
First hold crank, then vent brake!
First release the brake lever, then the crank
carefully!
Applies rope coils to the drum.
The slack rope switch is made of

a spring mounted roll arm
the rope loses its tension, then
the limit switch  is triggered by a
cam segment. The motor stops.
. If
26