Siemens Sinumerik 840D sl Function Manual page 70

Sinumerik safety integrated

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Safety Functions integrated in the drive

4.6 Control via terminals on the Control Unit and the power unit

Monitoring channel

Control Unit

Monitoring channel

Motor module

Figure 4-2 Terminals for "Safe Torque Off": example for Motor Modules Booksize and NCU7x0

Grouping drives

To ensure that the function works for more than one drive at the same time, the

terminals for the corresponding drives must be grouped together as follows:

S 1. Control Unit shutdown path

By connecting the binector input to the joint input terminal on the drives in one

S 2. Motor Module shutdown path

By appropriately connecting terminal "EP" for the individual Motor Modules be-

longing to a group.

The grouping must be identical in both monitoring channels.

If a fault in a drive results in a Safe Torque Off (STO), this does not automatically

mean that the other drives in the same group also switch to Safe Torque Off

The assignment is checked during the test for the switch--off signal paths. The

operator selects Safe Torque Off for each group. The check is drive--specific.

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

Motor module

Sinamics s120