Siemens SINAMICS G120 Function Manual page 53

Table 4- 11
SINAMICS G120D
with
CU240D-2 DP-F
CU240D-2 PN-F
CU240D-2 PN-F PP
CU240D-2 PN-F FO
CU250D-2 DP-F
CU250D-2 PN-F
CU250D-2 PN-F PP
CU250D-2 PN-F FO
Control Units
Safety-related signals, e.g. the switching state of a sensor, must be wired using two
channels with one safety input. The inverter evaluates the signal on two separate signal
paths.
What devices can be connected?
The safety-related input is designed for the following devices:
● Connection of safety sensors, e.g. emergency stop command devices or light curtains.
● Connection of pre-processing devices, e.g. fail-safe control systems and safety relays.
Signal states
The inverter expects signals with the same state at its safety-related input:
● High signal: The safety function is deselected.
● Low signal: The safety function is selected.
Fault detection
The inverter evaluates deviations in the two signals of the safety-related input. The inverter
thus detects, for example the following faults:
● Cable break
● Defective sensor
The inverter cannot detect the following faults:
● Cross-circuit of the two cables
● Short-circuit between signal cable and 24 V power supply
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
Inverters for cabinet-free installation (IP65) with several safety inputs
Connector.pin
X7.4
X7.2
X8.4
X8.2
X9.4
X9.2
Digital input Safety inputs
Basic functions
DI 0 -
DI 1
DI 2
DI 3
DI 4 F-DI 0
DI 5
Installing
4.3 Activation via F-DI
Extended
functions
F-DI 0
F-DI 1
F-DI 2
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