Siemens SINAMICS S120 Function Manual page 663

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Grouping drives (not for CU310-2)

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:

1. Switch-off signal path

Connect the p9620 parameters of all drives that belong to a group with a single DI (r0722.x)

of the CU320‑2.

2. Switch-off signal path (Motor Module / Power Module with CUA3x)

Wire the terminals for the individual Motor Modules/Power Modules, belonging to the group,

with CUA31/CUA32.

Parameterization of the grouping

The grouping must be configured (DI on Control Unit) and wired (EP terminals) identically in

both monitoring channels.

Response of STO for grouping

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" (STO).

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.

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

11.8 Controlling via terminals on the Control Unit and Motor/Power Module

Safety Integrated Basic Functions