Lenze EVS9332xP Manual do Utilizador descarregar pdf (Página 423)

100

101

Safety engineering

Functional test

Important notes

11.5

11.5.1



11.5−1

EDSVS9332P EN 5.0−07/2013

11.5 Functional test

11.5.1 Important notes

 Danger!

Unexpected start−up of the machine possible

The "Safe torque off" safety function provides protection against

an unexpected start−up of the drive and therefore is an

important item within the safety concept for a machine. It has to

be ensured that this function works correctly.

Possible consequences:

ƒ Death, severe injury, or damage to material assets, when the

safety function fails.

Protective measures:

After the installation and at regular intervals, the operator has to

check the function of the "Safe torque off" circuit.

ƒ When doing this, check both disconnecting paths separately

with regard to their disconnection capability.

ƒ The functional test can be carried out manually or

automatically via the PLC.

ƒ Basically the inspection interval depends on the application

and the corresponding risk analysis, as well as on the system

as a whole. It should not exceed 1 year.

ƒ If the functional test shows impermissible states,

– the drive or the machine has to be shut down immediately.

– commissioning is not permitted until the safety function

operates correctly.

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