Siemens CU240B-2 List Manual

4 Faults and alarms
4.2 List of faults and alarms
SINAMICS G120 Control Units CU240B-2/CU240E-2
812 List Manual (LH11), 01/2016, A5E33839529
Remedy: - check the wiring of the F-DI (contact problems).
Note:
This message can be acknowledged via F-DI or PROFIsafe.
Discrepancy errors of an F-DI can only be acknowledged if safe acknowledgment was carried out once after the
cause of the error was resolved (p10006, acknowledgment via PROFIsafe, extended message acknowledgment). As
long as safety acknowledgment was not carried out, the corresponding F-DI stays in the safe state internally.
When the "Extended message acknowledgment" function (p9507.0) is active, the following applies:
If the F-DI assigned for STO or SS1 is in a fail-safe state due to a discrepancy error, then when deselecting via this F-
DI, safe acknowledgment can no longer be executed.
For cyclic switching operations at the F-DI, it may be necessary to adapt the discrepancy time to the switching
frequency.
If the period of a cyclic switching pulse corresponds to twice the value of p10002, then the following formulas should
be checked:
- p10002 < (tp / 2) - td (discrepancy time must be less than half the period minus the actual discrepancy time)
- p10002 >= 12 ms (discrepancy time must be no less than 12 ms)
- p10002 > td (discrepancy time must be greater than the switch discrepancy time which may actually apply)
td = possible actual discrepancy time (in ms) that can occur with a switching operation. It must be at least 12 ms.
tp = period for a switching operation in ms.
When debounce p10017 is active, the discrepancy time is directly specified by the debounce time.
If the period of a cyclic switching pulse corresponds to twice the debounce time, then the following formulas should
be checked.
- p10002 < p10017 + 1 ms - td
- p10002 > td
- p10002 >= 12 ms
Example:
For a 110 ms switching frequency and p10017 = 0, the maximum discrepancy time that can be set is as follows:
p10002 <= (110/2 ms) - 12 ms = 43 ms
Rounded off, p10002 <= 36 ms is obtained (as the discrepancy time is rounded off as a multiple of 12 ms).
Note:
F-DI: Failsafe Digital Input
A01788 SI: Automatic test stop waits for STO deselection via motion monitoring functions
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: NONE
Cause: The automatic test stop (forced checking procedure) was not able to be carried out after powering up.
Possible causes:
- the STO function is selected via safe motion monitoring functions.
- a safety message is present, that resulted in a STO.
Note:
STO: Safe Torque Off
Remedy: - deselect STO via safe motion monitoring functions.
- remove the cause of the safety messages and acknowledge the messages.
Note:
The automatic test stop is performed after removing the cause.
A01790 SI: Power up stopped due to STO via terminals
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: NONE
Cause: When powering up, the automatic internal self test of the Control Unit was not able to be completed as the pulses
were not enabled. It is possible that the "STO via terminals at the Power Module" function is being used, and STO is
selected in at least one hardware switch-off signal path at the Power Module.

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English