Operating Unit; Safety Equipment; Limit Switches - Tractel tirak L 500 P Série Manuel D'installation Et De Manutention Original

4.6

Operating unit

Depending on the product version the hoist is controlled by a
button panel, control box or a central control unit, see Fig. 1 and
Fig. 3.
Item Name Function
With a single speed:
1 UP button Move load upwards / pull wire rope:
–
2 DOWN button Move load downwards / release wire
rope:
–
3 EMERGENCY stop Activate:
button
–
Deactivate:
–
With two speeds:
4 UP button Move load upwards /pull wire rope:
–
–
5 DOWN button Move load downwards / release wire
rope:
–
–
6 EMERGENCY- See Point 3.
STOP button
4.7

Safety equipment

EMERGENCY-STOP button
Press the EMERGENCY-STOP button to stop the hoist immedi-
ately in an emergency situation.
Operating brake (spring-applied brake)
The electromagnetic operating brake automatically locks when
the operating equipment for travelling UP or DOWN is released
or when the power fails.
Centrifugal brake
When the operating brake on the motor of the hoist is released
manually, a centrifugal brake on the motor shaft of the hoist
makes sure that the load is not lowered too fast.
Running hours counter
The running hours can be read from the running hours counter,
in order to determine when the next hoist safety check must be
carried out.
G1035.2 - 11/2014
Press and hold the button
Press and hold the button
press the button in.
turn the button to the right until it
releases.
Press the button halfway and hold:
slow
Press the button completely and
hold:
fast
Press the button halfway and hold:
slow
Press the button completely and
hold:
fast

Limit switches

See also ' 18 Limit switch overview' on page 28.
The operator or the system manufacturer must take their risk
assessment into account when determining the design and the
fitting position of the limit switches and decide whether extra limit
switches are required. The limit switches must have a positive
opening.
1) Mechanical load limiting device
The load limiting device will activate automatically when the
overload setting is reached. The upward travel of the hoist is
stopped. The maximum overload that has to be set up can be
found in the applicable directives and standards (See
' 9.1 Directives and standards' on page 11).
The system manufacturer / operator is responsible for determin-
ing and setting up the application dependent maximum overload.
For further information see ' 15.5 Adjustment, Adjusting the me-
chanical load limiting device' on page 23.
2) Emergency limit switch UP
For temporary PLE that are attached to a stationary suspended
construction, emergency limit switches are required for lifting.
3) Operating limit switch UP (optional)
An operating limit switch can be installed as an option that trips
before the emergency limit switch.
4) 3-phase monitoring (phase sequence relay, hoists without
frequency converter)
In control units operating with three-phase current, the phase
sequence relay shuts down the system (emergency stop) in the
case of an incorrect phase sequence and this prevents an UP /
DOWN travel direction mix-up, which could potentially disable the
limit switches and load limiting devices.
5) Manual operation switch
The 'Manual operation' switch interrupts the power supply when
the hand crank is in operating position.
6) Slack rope switch (rope limit switch and winding monitor-
ing / limit switch DOWN) (optional)
The winding monitor switches off as soon as the wire rope slack-
ens on the rope reel or if the end of the wire rope runs off the
rope reel.
7) Limit switch DOWN (optional)
No limit switch DOWN is required for PLE that are mounted on
the ground (see EN 1808 8.3.10.5).
8) Rope limit switch (limit switch DOWN) (optional)
The limit switch switches off the hoist as soon as the driven
reeler winds up the last turn of the rope.
9) BSO limit switch (optional)
Optional for fall arrest device with electrical deactivation:
The limit switch will ensure that the control voltage for the down-
ward hoist movement will be disconnected if an emergency stop
is activated.
Operation and Installation Manual
EN-9