ABB FSO-21 - Safe direction (SDI); Safe acceleration range (SAR)

Overview 51
 Safe direction (SDI)
This safety function monitors that the motor rotates into the correct direction. If the
motor rotates into the forbidden direction more than the user-defined SDI tolerance
limit allows, the FSO module activates the SSE function and the motor stops. This
safety function requires that you use an encoder in the safety application. See section
Safe direction (SDI) on page 186.
 Safe acceleration range (SAR)
This safety function provides safe deceleration ramp monitoring for other safety
functions. FSO module has two different SAR functions, SAR0 and SAR1.
SAR0 and SAR1 functions behave in the same way but they can be configured to
work differently, based on the application needs. SAR0 parameters are used with the
SSE function. SAR1 parameters are used with the SS1, SLS, varSLS, and SDI
functions. For more information, see section Configuring SAR on page 361.