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Safety instructions
Bosch Rexroth AG
, WS200, DCA_DE_000151/10-2013
2.9 Safety equipment
To protect people, the WS200 work station is equipped with the following
safety equipment:
•
EMERGENCY OFF pushbutton (with hydraulic version)
•
Motor protection relay (with hydraulic version)
•
Fuse protection of the electr. switching contacts (with hydraulic version)
•
Hydraulic pressure limitation
•
Quick-release coupling
•
Mechanical safeguards
The facilities set out are described in more detail below.
At the control box of the WS200 work station, there is an EMERGENCY OFF pushbutton.
The EMERGENCY OFF pushbutton has to be pushed in order to prevent dangers for
persons or the work station. Operation of the EMERGENCY OFF pushbutton interrupts the
power supply to the control in the control box and the function of the connected electric
actuators. The hydraulic power unit and thus the hydraulic oil supply are switched off.
In the control box of the WS200 work station, a motor protection relay and a power
contactor are installed. The motor protection relay is used to protect the electric motor
against short-circuit and thus thermal overload. Upon activation, the hydraulic power unit
and thus the hydraulic oil supply are switched off. In case of triggering due to thermal
overload, the hydraulic power unit can only be switched on again after a cool-down phase.
In addition to the motor protection relay function, the circuit arrangement in the control
box has another function. Protection against automatic start-up of the hydraulic power unit
after an interruption in the supply voltage. This may e.g. be the case if the mains plug is
pulled out of the mains socket while the hydraulic power unit is switched on. If this is the
case, the hydraulic power unit can be switched on again by means of the "ON" pushbutton
after the problem has been solved.
To protect the electric switching contact in the control box against welding in case of
excessive currents, a micro-fuse has been installed. The technical data has to be observed
in case of exchange. For details please refer to chap. 10.6, table 36.
The work station may only be operated with a maximum hydraulic operating pressure
of 60 bar which can be set via the pressure relief valve in the P/T distributor. The safety
pressure has been pre-set at the factory to 70 bar by means of a pressure relief valve at the
hydraulic power unit.
To monitor the pressure of training circuits during teaching, corresponding pressure gauges
are to be integrated into the training circuit. The machine end-user is responsible for this.
With hydraulic components for training set-ups, quick-release couplings are mounted at the
measuring glass and at the P/T distributor for the hydraulic connection. They prevent
leakage of hydraulic fluid if this connection is separated.
EMERGENCY OFF
pushbutton
Motor protection
relay
Fuse protection
switching contacts
Hydraulic
pressure limitation
Quick-release
coupling
Содержание Rexroth WS200
Страница 1: ...WS200 work station Operating instructions DCA DE 000151 10 2013 Replaces English ...
Страница 85: ...Appendix 85 92 DCA_DE_000151 10 2013 WS200 Bosch Rexroth AG ...
Страница 86: ...86 92 Appendix Bosch Rexroth AG WS200 DCA_DE_000151 10 2013 ...
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Страница 88: ...88 92 Appendix Bosch Rexroth AG WS200 DCA_DE_000151 10 2013 ...
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Страница 91: ...Appendix 91 92 DCA_DE_000151 10 2013 WS200 Bosch Rexroth AG 15 2 Declaration of conformity ...