ABB FPBA-01 Manual de usuario descargar pdf (Pagina 16)

16 ABB industrial drives ACS880 single drives | Catalog

Integrated safety reduces the need for external safety

components, simplifying the configuration and reducing

installation space. In the ACS880 the safety functionality is

a built-in feature. The ACS880 comes with safe torque-off as

standard. Optional safety functions include safe stop 1, safe

stop emergency, safely-limited speed, safe brake control and

safe maximum speed. The drives’ functional safety complies

with the requirements of the European Union Machinery

Directive 2006/42/EC.

Safe torque-off as standard

Safe torque-off (STO) is used for prevention of unexpected

startup (with such hardware as a key lock switch) or

other stopping-related functions enabling safe machine

maintenance and operation. With safe torque-off the drive

will not provide a rotational field, thereby preventing the

motor from generating a torque on the shaft. This function

corresponds to an uncontrolled stop in accordance with stop

category 0 of EN 60204-1.

The safety functions module

The safety functions module FSO-11 comes with self

diagnostic functionality and a range of safety functions

that meet current safety requirements and standards in

one compact module. Compared to using external safety

components, the FSO-11 provides a cost-efficient solution

packed into a single safety functions module to ensure safe

drive operation. The FSO-11 is easy to mount in the drive.

Commissioning and configuration is done through the Drive

composer pro PC tool. The safety functions module supports

the following safety functions (which at least achieve SIL2 or

PL d safety level (Cat. 3)):

− Safe stop 1 (SS1) initiates motor deceleration

(eg, emergency stop, stop category 1), monitors

deceleration and automatically activates the safe

torque-off. When stopped this function corresponds

to a controlled stop in accordance with EN 60204-1.

− Safely-limited speed (SLS) prevents the motor from

exceeding the specified safe speed.

− Safe brake control (SBC) provides a safe output for

controlling the motor’s external (mechanical) brakes.

− Safe maximum speed (SMS) monitors the drive output

frequency to ensure it does not exceed the set. This

function is set to be continuously active, to provide

protection for eg, structural maximum motor

frequency.

− Safe stop emergency (SSE) can be configured to, upon

request, either activate STO instantly (category 0 stop),

or first initiate motor deceleration and then when motor

is stopped activate the STO (category 1 stop).

Integrated safety for simplified configuration

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