Siemens Sinamics S120 Function Manual page 476

Safety Integrated basic functions
9.8 Control via terminals on the Control Unit and Motor/Power Module
Overview of the safety function terminals for SINAMICS S120
The different power unit formats of SINAMICS S120 have different terminal designations for
the inputs of the safety functions. These are shown in the following table.
Table 9- 4
Module
Control Unit CU320-2
Single Motor Module
Booksize/Booksize
Compact
Single Motor Module/
Power Module Chassis
Double Motor Module
Booksize/Booksize
Compact
Power Module Blocksize
with CUA31/CUA32
Control Unit CU310-2
Power Module chassis with
CU310-2
For further information about the terminals, see the Equipment Manuals.
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)
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
Both terminals must be energized within the tolerance time p9650/p9850, otherwise a fault
will be output.
474
Inputs for safety functions
The desired input terminal is selected via BICO interconnection (BI: p9620[0]).
= 400 µs, t
i
1. Switch-off signal path
(p9620[0])
X122.1....6/X132.1...6
DI 0...7/16/17/20/21
(see CU320-2)
(see CU320-2)
(see CU320-2)
(see CU320-2)
X120.3
X121.1...4
(see CU310-2)
=> 3 x t = 1.2 ms)
EP i
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
2. Switch-off signal path (EP terminals)
X21.3 and X21.4
(on the Motor Module)
X41.1 and X41.2
X21.3 and X21.4 (motor connection X1)
X22.3 and X22.4 (motor connection X2)
(on the Motor Module)
X210.3 and X210.4 (on the
CUA31/CUA32)
X120.4 and X120.5
X41.1 and X41.2
Drive functions