Option description
Contents of this chapter
This chapter describes the operation of the option +Q965, Safely-limited speed with the
encoder interface, and its settings.
Overview
Option +Q965 uses the FSO-21 safety functions module (option +Q972) and the FSE-31
pulse encoder interface module (option +L521). ABB installs the FSO-21 and FSE-31
modules to the drive and sets the delivery configuration for the option at the factory.
With option +Q965, these safety functions are configured in the FSO module at the factory:
• Safely-limited speed (SLS). This function prevents the motor speed from exceeding the
user-defined speed limits.
• Safe maximum speed (SMS). This function prevents the machine from exceeding the
user-defined maximum speed of the machine or process.
• Safe speed monitor (SSM). This function provides a safe output signal to indicate when
the motor speed is between user-defined limits.
The user defines the operation of the SLS, SMS and SSM functions with the FSO module
parameters at the start-up, for example, by setting the speed limits.
Note: If the Safe brake control (SBC) function is used, it is also activated according to the
configuration (either before or after the drive STO function is activated, or at a specified
speed limit). In this case, make sure that you have dimensioned the brake correctly for these
situations. For more information, see the FSO module user’s manual.
To maintain the SIL/PL capability, the motor must be equipped with a safety encoder.
Note: A safety function request to the FSO module must be active for a minimum of 20 ms.
3
Option description 15
To Next Page
Loading...
