Page 679 - IPD Product Catalog V17
P. 679
Variable Speed Drives
SAFETY OPTIONS
Integrated Safety
Integrated safety reduces the need for external safety components, simplifying configuration and reducing installation space. The safety functionality is a
built-in feature of the ABB drives, with safe torque off (STO) as standard. ABB drives can also be part of PROFIsafe over PROFINET network, where safety PLC
is controlling the STO or safe stop 1, time controlled, SS1-t functionality. This connectivity and functionality can be done by using the FSPS-21 option module.
The drives’ functional safety is designed in accordance with EN/IEC 61800-5-2 and complies with the requirements of the European Union Machinery
Directive (2006/42/EC). The safety functions are certified by TÜV Nord and comply with the highest safety performance level (SIL 3/PL e) for machinery
safety. It is possible to install the safety modules also afterwards to the drive.
PROFIsafe Safety Functions Module FSPS-21 (1)
The FSPS-21 module has integrated PROFIsafe, safety functions and PROFINET IO connection. The ready-made safety functions make safety configuration
in the drive unnecessary. The module supports STO and SS1-t safety functions. It is used together with a safety PLC that supports PROFIsafe over PROFINET
communication.
Safe Torque Off (STO)
Function requesteded
F un c t ion r eque s t
|n|
4
0
t
Function requesteded
F un c t ion r eque s t
STO is the basic foundation of drive-based functional safety, as it brings a drive safely to no-torque
|n|
state making the motor coast to stop. Integrated STO-function simplifies the safety circuit as external
components are not needed to safely stop the application.
0
• STO is standard safety function in all ABB drives. t
• Typically used for prevention of an unexpected startup
t
S
c
STO activateded
at
O a
v
i
T
• (EN ISO 14118) of machinery or for an emergency stop, fulfilling stop category 0 (EN 13850/IEC
|n|
60204-1).
0
Safe Stop 1, Time Controlled (SS1-T)
Time limit t
Function
requested STO activateded
O a
c
T
v
at
i
S
t
|n|
0
Time limit t
Function
requested
Safe stop 1 stops the motor safely with a controlled ramp stop and stop time monitoring. SS1-t initiates the
ramp stop from the drive and activates STO when speed reaches zero. If the drive is not decelerating to zero
speed within the time limit, the STO function is activated. SS1-t is typically used in applications where motion
must be stopped quickly and safely before switching to a no-torque state.
• SS1-t stops the motor safely, using a controlled ramp stop and then activates the STO function
• SS1-t can be used to implement an Emergency stop, fulfilling stop category 1 (EN/IEC 60204-1)
(1) PROFIsafe safety functions module FPS-21 compatible with ACS380, ACS580 and ACS880.
1300 556 601 | ipd.com.au | V17-R05 679