Siemens SINUMERIK 840D sl Function Manual page 301

TV_FeedCommand
TV_FXSreached
TV_FXShold
CloseBrake
MoveAxis
Done
Error
State
FB11 error identifiers
State
0
1
2
3
4
5
6
7
8
9
10
11
Note
The block must be called by the user program. The user must provide an instance DB with
any number for this purpose. The call is multi-instance-capable.
Additional alarm support
To support the commissioning of the brake test Alarm 20096, "Axis %1 brake test aborted,
additional information %2" can be enabled with MD11411 $MN_ENABLE_ALARM_MASK, bit
5 = 1. This alarm supplies more detailed information if the brake test is interrupted.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Signal Input
or out‐
put
E
E
E
A
A
A
A
A
No error
Start conditions not fulfilled, e.g. axis not under closed-loop control/brake closed/axis disa‐
bled
When selecting the brake test, there is no feedback signal from the NC in the "Brake test
active" signal
No "Brake closed" feedback signal using input signal B closed
No traversing command output (e.g. axis motion has not been started)
Fixed end stop is not reached → axis RESET was initiated
Traversing inhibit/approach too slow → fixed stop cannot be reached. Monitoring time
TV_FXSreached has expired.
Brake is not holding at all (the end position is reached)/approach speed is too high
Brake opens during the holding time
Error when deselecting the brake test
Internal error
"PLC-controlled axis" signal not enabled in the user program
Type
S5TIME Monitoring time value → output travel command.
Check traversing commands after MoveAxis has
been set.
S5TIME Monitoring time value → fixed stop reached
S5TIME Monitoring time value → test brake
BOOL Request, close brake
BOOL Request, initiate traversing motion
BOOL Test successfully completed
BOOL Error has occurred
BYTE Error status
Meaning
Connecting sensors and actuators
8.6 Safe Brake Test (SBT)
Remark
301