7.17.3.2 SBT Configuration
All parameters concerning the SBT are described under 7.17.1 - SBT Parameters. Prerequisite is an attached and
enabled brake on connector X50. The following parameters can be set:
Configure a safe or non-safe brake.
Set the maximal force or torque. The value shall be set to 1.3 times the load force/torque.
Set the apply time: for how long the force/torque is applied.
Set the motion limit: which position deviation is acceptable.
Set the request interval: the drive automatically sets the flag Brake Test Time elapsed (UPID 1A21h), which
recommends performing the brake test.
If the brake is not configured and the SBT is started, the error Brake Test Failed will be generated.
7.17.3.3 SBT Test Time expired
With the variable Safety Fn State Brake Tst time Ov (UPID 1A21h) the drive indicates that a safe brake test should be
performed. After a power up or reboot this flag is set. After a successful brake test this flag is cleared and will become
active after the SBT Request Interval (UPID 47DAh).
7.17.3.4 SBT Preconditions
For starting the SBT the following preconditions must be fulfilled:
The brake must be configured.
The motor must be configured.
The SBT request must be configured (for digital inputs)
Make sure the motor position is in a safe range (if the brake is not capable to hold the motor, the motor will move
at least the distance defined with SBT Motion Limit (UPID 47D9h)
The drive must be in the Op. Main State "Ready to Switch On".
2S Drive Systems / 0185-1174_E_1V1_SM_C1251-2S / NTI AG
0185-1174_E_1V1_SM_C1251-2S / 2021-11-26 16:43 (Rev. 12500)
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