Safety Equipment; Limit Switches - Tractel tirak L 500 P Serie Original-Montage- Und Betriebsanleitung

Installation and operating manual
4.4

Safety equipment

EMERGENCY stop button
Press the EMERGENCY stop button to stop the hoist immediately in an emergency situation.
Optional radio remote control (if activated):
Press the EMERGENCY stop button of the radio remote control to stop the hoist immediately in an emergency situation
Operating brake (spring-applied brake)
The electromagnetic operating brake automatically closes when UP or DOWN travelling button is released or when the power fails.
Centrifugal brake
When lowering the load by activating the controlled descent, a centrifugal brake controls and limits the descent speed.
Thermal protection switch
When overheated, the motor is switched off.

4.4.1 Limit switches

See also § 13.
The system manufacturer must take his 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 direct opening action.
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 not possible
anymore. The maximum overload that has to be set up can be found in the applicable directives and standards (see 3.4).
The system manufacturer is responsible for determining and setting up the application dependent maximum overload.
Operating the hoist with a constant overload is strictly prohibited.
For further information see § 8.5.
2) Ultimate lifting limit switch
For TSAE that are attached to a stationary suspended construction, ultimate lifting limit switches are required for lifting.
3) Lifting limit switch (optional)
A lifting limit switch (operating limit switch) can be installed as an option that trips before the utlimate lifting 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 monitoring / lowering limit switch) (optional)
The winding monitor switches off as soon as the wire rope slackens on the rope reel or if the end of the wire rope runs off the rope
reel.
7) Lowering limit switch (optional)
No lowering limit switch is required for TSAE that are mounted on the ground (see EN 1808 8.3.10.5).
8) Wire rope limit switch (lowering limit switch) (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 for fall arrest device with electrical deactivation:
The limit switch will ensure that the downward hoist movement is no more possible in case the BSO has triggered.
G1035.4 – 01/2019 EN-27