Siemens SINUMERIK 840D sl Function Manual page 729

A01781 SBT brake opening time exceeded
Response NONE
Acknowledg‐ NONE
ment
Explanation The maximum time (11 s) to open the brake during the brake test has been exceeded.
Possible causes:
During the brake test, the drive has gone into a fault condition, and therefore the drive closed the brake.
For an external brake, the feedback signal "Brake closed" was signaled for an excessively long period of
time (p10230.5, p10235). Alarm value (r2124, interpret binary):
Bit 0 = 1:
Internal brake was not able to be opened.
Bit 1 = 1:
External brake was not able to be opened.
Remedy Perform a safe acknowledgment.
Restart the brake test (p10230.1, p10235.1).
See also: p10230 (SI Motion SBT control word), p10235 (SI Safety Control Channel control word S_STW3B)
A01782 SBT brake test control error
Response NONE
Acknowledg‐ NONE
ment
Explanation The brake test was canceled due to incorrect control.
Alarm value (r2124, evaluate binary):
Alarm value 0:
The brake test was canceled as a result of a fault (brake opening time or brake closing time exceeded).
Bit 0:
The Safe Brake Test was canceled by resetting the brake test selection.
Bit 1:
The Safe Brake Test was canceled as the start of the brake test was reset.
Bit 2:
The brake, which was selected at the start of the brake test, is not configured in p10202.
When starting the brake test using the test stop selection, brake 1 was not configured as internal brake.
There is a brake test configuration error. In this case, Alarm A01785 is also output.
See also: p10202 (SI Motion SBT brake selection)
Remedy Check the brake test parameterization (p10202).
Check whether alarm A01785 is active, and if required, evaluate.
Perform a safe acknowledgment.
If required, restart the brake test.
A01783 SBT brake closing time exceeded
Response NONE
Acknowledg‐ NONE
ment
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
11.3 Safety messages for SINAMICS S120
Diagnostics
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