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Drive-based functional safety

Safer machines and processes with ABB's LV AC drives

ABB drives offer functional safety solutions together with a wide range of safety devices for smart machine design. Our LV AC drives have safe torque off (STO) built-in as a standard or offers it as an optional safety function. STO in our drives together with additional safety functions enhance application safety. ABB’s functional safety design tool helps safety designers achieve the required safety solution for their machines. Our drive-based functional safety offering complies with the requirements of international standards and requirements, including European Union Machinery Directive 2006/42/EC.

 

Drive type Integrated STO SS1 SBC SLS SSE SMS  SDI 3)  SSM 4)
Industrial drives ACS880 SIL 3/PL e
  ●   ●
ACS800 SIL 2/PL d 
● ●
● ●
● ● 1)
● ● 2)
  -   -
Machinery drives ACS355 SIL 3/PL e
 ○  ○
ACS850 SIL 3/PL e
 ○  ○
  ACS380 SIL 3/PL e       ○       ○       ○       ○   ○  ○  ○
  ACS880 SIL 3/PL e       ●       ●      ●       ●   ●  ●  ●
Industry-specific drives ACQ810 SIL 3/PL e
 ○  ○
  ACH580  SIL 3/PL e     ○     ○     ○     ○     ○   ○   ○ 
General purpose drives ACS580 SIL 3/PL e
 ○  ○
Motion control drives ACSM1 SIL 3/PL e
 ○  ○
MicroFlex e150 SIL 3/PL e
 ○  ○
  MotiFlex e180   SIL 3/PL e     ○
    ○     ○     ○    ○  ○  ○


● Available as an integrated drive option.
●● Available as an option for cabinet-built drives (+QXXX).
○ Safety functions are possible, with external safety devices connected to the STO in the drive.
1) SSE is implemented as category 1 stop function.
2) SMS is implemented as a variant of SLS.
3) SDI is available only with FSO-21
4) SSM is available only with FSO-21

You can also build safety functions to the drives without safe torque off (STO), by using external safety devices such as contactors/circuit breakers and safety relays.  

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