Siemens Sinumerik 840D sl Function Manual page 328

Sinumerik safety integrated

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Table of Contents

Connecting Sensors/Actuators

7.6 Safe Brake Test (SBT)

Figure 7-35 Torque limiting for SINAMICS S120

When selecting the brake test, the holding torque required for the force due to the

weight of the axis is internally measured (m

The drive must only additionally provide the difference between this torque and the

braking torque from MD36966 $MA_SAFE_BRAKETEST_TORQUE. In the 7-35

diagram, this torque is designated with m

For the non automatic torque determination function, the following applies: The

torque limiting of SINAMICS is symmetrical around the torque from drive para-

meter p1532. In the diagram 7-35 the measured torque m

This is the reason that m

is the sum from m

matches that parameterized in drive parameter p1532, m

value from the MD $MA_SAFE_BRAKETEST_TORQUE.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition

from Fig. 7-35 is entered as torque limiting.

and drive parameter p1532. If the measured torque

Upper torque limiting + m

Uower torque limiting -- m

is however less than

Sinamics s120