Siemens SINAMICS S120 Function Manual page 591

Terminals for STO, SS1 (time-controlled), SBC
The functions are separately selected/deselected for each drive using two terminals.
1. Control Unit switch-off signal path (CU310-2/CU320-2)
2. Switch-off signal path, Motor Module/Power Module (with CUA3x or CU310-2)
Both terminals must be energized within the tolerance time p9650/p9850, otherwise a fault
will be output.
Figure 9-2 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
2. Switch-off signal path (Motor Module/Power Module with CUA3x)
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
9.8 Control via terminals on the Control Unit and Motor/Power Module
The desired input terminal is selected via BICO interconnection (BI: p9620[0]).
The input terminal is the "EP" terminal ("Enable Pulses")
The EP terminal is periodically interrogated with a sampling time, which is rounded off to
an integer multiple of the current controller cycle; however, it is a minimum of 1 ms.
(Example: t = 400 µs, t
i
By connecting the binector input to the joint input terminal on the drives in one group.
By appropriately wiring the terminals for the individual Motor Modules/Power Modules,
belonging to the group, with CUA31/CUA32.
=> 3 x t = 1.2 ms)
EP i
Safety Integrated basic functions
589