Siemens SINUMERIK 840D sl Function Manual page 225

Sinumerik safety integrated

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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 MD 36966 $MA_SAFE_BRAKETEST_TORQUE. In the dia-

gram 7-21, this torque is designated with m

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

meter p1532. In the diagram 7-21 the measured torque m_Act is however less

This is the reason that m

is the sum from m

matches that parameterized in drive parameter p1532, m

the value from the MD $MA_SAFE_BRAKETEST_TORQUE.

SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition

from Fig. 7-21 is entered as torque limiting.

and the drive parameter p1532. If the measured tor-

Connecting Sensors/Actuators

7.4 Safe brake test (SBT)

Upper torque limiting + m

Lower torque limiting – m

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Sinamics s120