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Rockwell Automation Publication 35-UM001A-EN-P - May 2022
109
Chapter 6 Safety Functions
Figure 51 - SBC Linked to STO with Positive Delay
Figure 52 - SBC Linked to STO with Negative Delay
SBC Safety Fault
When the module experiences an SBC Fault, the device is placed in the safe
state and the cause of the fault is recorded.
If SBC function detects a fault, it sets:
•
devicename
:SI.SafetyFault = 1
•
devicename
:SI.RestartRequired = 1
•
devicename
:SI.SBCReady = 0
Disable Torque
Torque Disabled
Engage Brake
Required If Restart Type = Manual
0x02 = STO Active
(1) Safety Output Assembly
(2) Safe Stop Function Attribute
(3) 24V DC Safety Output
(4) Safety Output Assembly
Restart Type = Automatic
Restart Type = Manual
SI.BrakeEngaged
(1)
SI.SBCActive
(1)
SI.TorqueDisabled
(1)
SI. STO Active
(1)
(STO to SBC Delay) > 0
SBC Activation
(2)
Brake Engaged
0x00
So0 and So1
(3)
SO.RequestReset
(4)
Brake Engaged
Disable Torque
Torque Disabled
Engage Brake
Required If Restart Type = Manual
0x02 = STO Active
(1) Safety Output Assembly
(2) Safe Stop Function Attribute
(3) 24V DC Safety Output
(4) Safety Output Assembly
Restart Type = Automatic
Restart Type = Manual
SI.BrakeEngaged
(1)
SI.SBCActive
(1)
SI.TorqueDisabled
(1)
SI. STO Active
(1)
(STO to SBC Delay) <0
SBC Activation
(2)
Brake Engaged
0x00
So0 and So1
(3)
SO.RequestReset
(4)
Brake Engaged