Siemens SINAMICS S120 Function Manual page 662

Safety Integrated Basic Functions
11.8 Controlling via terminals on the Control Unit and Motor/Power Module
Module
Blocksize Power Module
with CU310-2
SIMOTION CX32-2 control‐
ler extension
Please note: For the CU310-2, you must use the EP terminal (DI 17) as a switchoff signal path. As 2nd
1)
switch-off signal path, use any free digital input (DI). For further information about the terminals, see
the Equipment Manuals.
Note
Function of the EP terminals
The EP terminals are only evaluated if the Safety Integrated Basic Functions are enabled via
onboard terminals.
Description of the two-channel structure
The functions are separately selected/deselected for each drive using two terminals.
● Switch-off signal path, Control Unit (CU310-2 / CU320-2)
The desired input terminal is selected via BICO interconnection (BI: p9620[0]).
● Switch-off signal path, Motor Module / Power Module (with CUA3x or CU310-2)
The input terminal is the "EP" terminal ("Enable Pulses").
Both terminals must be energized within the tolerance time p9650, otherwise a fault will be
output.
Figure 11-2 Example: Terminals for "Safe Torque Off": Example of Motor Modules Booksize and CU320-2
660
1st switch-off signal path
(p9620[0])
(see CU310-2)
X122.1...6
DI 0...3/16/17
2nd switch-off signal path (EP terminals)
STO_A and STO_B
(for more detailed information, see "SI‐
NAMICS S120 AC Drive Manual ")
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Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions