Siemens SINAMICS S120 Function Manual page 698

Drive functions

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Safety Integrated Basic Functions

10.8 Control via terminals on the Control Unit and Motor/Power Module

Both terminals must be energized within the tolerance time p9650, otherwise a fault will be

Example: Terminals for "Safe Torque Off": Example of Motor Modules Booksize and CU320-2

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).

Function Manual, 11/2017, 6SL3097-4AB00-0BP5

Drive functions

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