Jetter JM-35 S1 Series, Manual, Page: 65 / 124

5.2 Validating the SBC safety function
INFO
Simultaneous application of all brakes triggers an internal test, which
must be performed at least once a year to achieve safety integrity
(SIL2 / PL d) and at least once every 24 hours to achieve safety integ-
rity (SIL3 / PL e). This test is always performed automatically when the
system is switched on.
5.2.1 Validation of safety function SBC (for hardware revision A1 6xxx_00)
The safety function SBC is to be validated against the safety requirements
from the application in the following cases:
y
During commissioning
y
After changes to the application
y
After repair or device replacement
y
Once a year
Table 8 shows the test steps to be undertaken, the table is to be worked
through from top to bottom.
Designation State/Event Expected result
Initial state
• System is switched on.
• S-ADR is set to “SBC active”.
• Brakes are released
(STO1 input is “active”).
• Servo amplifier has released
brake(s).
Brake(s) is/are released..
Test step 1 STO1 -input becomes “inactive”.
Brake(s) is/are applied
and there is no error
message.
Test step 2 STO1 -input becomes “active”.
Brake(s) is/are released.
Table 8 SBC test steps
5.2.2 Validation of safety function SBC (for hardware revision A2 6xxx_0 2 )
If the safety function SBC is used, the user must validate it regularly, but at
least once a year.
The following table shows the test steps to be performed. It must be
processed from top to bottom.
Designation Event
Test step 1
Apply all brakes safely (by requesting the safety function SBC for all axes) simultaneously for at least
100 ms
Test step 2 The application program can then release the brakes again in any combination and sequence.
Table 9 SBC test steps
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JetMove 3000 Validation