5.6 Control via terminals on the Control Unit and Motor/Power Module
5.6.1 Features
● Control via terminals is only available for Basic Functions.
● Dual-channel structure via 2 digital inputs (Control Unit/power unit)
● In order to prevent nuisance trips as a result of signal disturbances or non-symmetrical test
signals, the signals can be debounced at the terminals of the connected components
(pushbuttons, switches etc.).
You can specify these debounce times in the following parameters:
– p9651 SI STO/SBC/SS1 debounce time (Control Unit) / SI STO t_debou CU
– p9851 SI STO/SBC/SS1 debounce time (Motor Module) / SI STO t_debou MM
● Different terminal blocks depending on the format.
● Automatic ANDing of up to 8 digital inputs (p9620[0...7]) on the Control Unit with parallel
configuration of power units in the chassis format is not supported.
5.6.2 Overview of available terminals
The various SINAMICS power unit formats have different terminal designations for the inputs
of the safety functions. These are shown in the following table.
Table 5-6 Inputs for safety functions
Component 1st switch-off signal path
(p9620[0])
2nd switch-off signal path (EP
terminals)
CU320‑2 Control Unit X122.1....6/X132.1…6DI
0...7/16/17/20/21
Single Motor Module Booksize/
Booksize Compact
X122.1....6/X132.1…6DI
0...7/16/17/20/21
EP terminals X21.3 and X21.4
(on the Motor Module)
Single Motor Module/
Power Module Chassis
X122.1....6/X132.1…6DI
0...7/16/17/20/21
EP terminals X41.1 and X41.2
Double Motor Module Booksize/
Booksize Compact
X122.1....6/X132.1…6DI
0...7/16/17/20/21
EP terminals on the Motor Mod‐
ule:
X21.3 and X21.4 (motor connec‐
tion X1)
X22.3 and X22.4 (motor connec‐
tion X2)
Power Module Blocksize with
CUA31/CUA32
X122.1....6/X132.1…6DI
0...7/16/17/20/21
X210.3 and X210.4 (on the
CUA31/CUA32)
For further information about the terminals, see the Equipment Manuals.
Controlling safety functions integrated in the drive
5.6 Control via terminals on the Control Unit and Motor/Power Module
Safety Integrated (with SINAMICS S120)
214 Commissioning Manual, 02/2020, A5E46305916B AB
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