How To Configure Sbc After Sto - ABB FSO-21 User Manual

266 Configuration
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How to configure SBC after STO

For more information on the SBC after STO function, see page 60.
Example 1 (without an encoder): The figure below shows an example of the SBC
after the STO function set-up when an encoder is not used:
• STO delayed brake with positive delay 900 ms
(SBC.11 STO SBC usage
• redundant emergency stop button connected to input
(STO.11 STO input A
• automatic acknowledgement
• estimated time in which the motor brakes to a stop from the maximum speed:
400 ms (SBC.13 SBC time to zero speed
• the fly-start feature is in not use, that is, you cannot start the motor before it has
stopped (STO.13 Restart delay after STO
• brake connected to redundant output, diagnostic pulses activated
(SBC.21 SBC output =
• STO is activated if brake feedback fails
• feedback from the brake is connected to digital input X113:2
(SAFEIO.22 Safety relay 1 feedback
• feedback input type NC (inverted state compared with the brake relay)
(Safety relay 1 feedback type
Inputs
STO.11
= DI X113:1 & X114:1
STO.12
= None
SAFEIO.22
= DI X113:2
Check also the
feedback input!
= Delayed brake,
= DI X113:1 & X114:1)
(STO.02 STO acknowledgement
DO X113:7 & X114:7,
= DI X113:2)
= Mechanically linked NC contacts).
STO.02
Speed
SBC.12 = 900 ms
STO.13 = 1300 ms
STO activated
SBC activated
SBC.11
SBC.22
SAFEIO.23
SAFEIO.53,
SBC.12 STO SBC delay
= 400 ms)
= 1300 ms)
SAFEIO.53
(SBC.22 SBC feedback action
= Automatic
SBC.13 = 400 ms
= Delayed brake
= STO
= Mechanically linked NC contacts
SAFEIO.56 = On
= 900 ms)
= Automatic)
and SAFEIO.56 = On)
= STO)
Outputs
STO.21
= None
STO.22
= None
SBC.21
= DO X113:7
& X114:7
Time