Control Of The Extended Functions Via F-Di (For Cu310-2) - Siemens Sinamics S120 Function Manual

5.6

Control of the Extended Functions via F-DI (for CU310-2)

The following terminals are provided on the CU310-2:
Table 5- 14
Typ e
Fail-safe digital outputs (F-DO)
Fail-safe digital inputs (F-DI)
Sensor
Digital input for checking the F-DO during forced dormant error detection (test stop) 1
Sensors: Fail-safe devices for command operations and sensing (e.g. Emergency Stop pushbut-
1)
tons, safety door locks, position switches, and light arrays / light curtains).
The CU310-2 has 1 fail-safe digital output and 3 fail-safe digital inputs. A fail-safe digital
output consists of a 24 VDC switching output, an output switching to ground and a digital
input for reading back the switching state. A fail-safe digital input is made up of 2 digital
inputs.
Not e
Fault acknowledgment
You have the following options of acknowledging CU310-2 faults after removing the fault:
• POWER ON
• Falling edge of the signal "Internal Event ACK" with subsequent acknowledgment on the
Control Unit ("fail-safe acknowledgment").
The signal states of the two digital inputs of the F-DI are frozen at logical 0 (safety function
selected) when different signal states are present within a fail-safe F-DI, until a safe
acknowledgment has been performed through an F-DI via parameter p10006 (SI
acknowledgment internal event input terminal) or the extended message acknowledgment
has been performed.
The monitoring time (p10002) for the discrepancy of the two digital inputs of an F-DI may
have to be increased so that switching operations do not trigger an undesired response,
thereby necessitating a safe acknowledgment. The signal states at the two related digital
inputs (F-DI) will need to have the same state within this monitoring time or fault
C01770/C30770 will be triggered, "discrepancy error" (CU310-2). This requires safe
acknowledgment.
Not e
Dis crepancy t ime
The discrepancy time must be set so that it is always less than the smallest expected
switching interval of the signal at this F-DI.
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Interface overview of the CU310-2
power supply, no dynamic response
1)
5.6 Control of the Extended Functions via F-DI (for CU310-2)
Control of the safety functions
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