Lenze E84Dxxxxx Manual do Utilizador descarregar pdf (Página 30)

3 Safe configuration

3.5 Safety functions

30

Lenze · 8400 protec · Drive-based safety · Software Manual · DMS 2.4 EN · 05/2013 · TD05

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3.5.1.5 Safe stop 1 (SS1)

Safe stop 1 / SS1 (corresponds to a "Stop1" according to EN 60204)

Description The drive-based safety system monitors whether the drive has reached the set tolerance margin

(n=0) within the parameterised stopping time and, after the stopping time has elapsed,

switches the drive to torque-free operation via the safety function STO

.



• The drive must be braked to standstill through the application!

• The speed is calculated from the standard device.

• Without an encoder, the function evaluates the speed status n=0 of the controller. In this

case the stopping time monitored by the drive-based safety system must be 0.5 s longer than

the stopping time parameterised on the controller.

• Additional measures are required against movements caused by external forces, e.g.

mechanical brakes. The application time of a brake must be considered when determining

the stopping time.

• A restart is only possible after the stopping time has elapsed completely. Restart behaviour

( 28)

Priority Priority function: STO

Function

Parameter  C15305 SS1, SS2: Stop time

 C15310

SOS: Speed window (n=0)

Activation How to activate the function:

• A data telegram with a corresponding content is sent to the controller via the safety bus.

Safety bus

( 33)

• "OFF state" at a safe input which has been assigned to the function by parameter setting.

Safe inputs

( 42)

• As response to the error stop request.

• As response to the emergency stop request.

Normal

behaviour

When the stopping time has elapsed, a standard stop is started.

• The power supply for the motor is safely interrupted immediately (STO

). The motor cannot

generate a torque and thus no dangerous movements of the drive.

Error behaviour If standstill could not be reached when the stopping time has elapsed, an error message is

generated and an error stop is started.

• The power supply for the motor is safely interrupted immediately (STO

). The motor cannot

generate a torque and thus no dangerous movements of the drive.

n

t

0

SS1

STO





STO

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