Fig. 7 Function Test - Switch Sequences - Pilz Intern PMC SR6 Manual

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Switch sequences and test results
The following graphic shows the switch sequences of STO
All test results deviating from this must be considered errors. If this is the case, check the wiring,
correct any potential errors and repeat the STO function test. If errors reappear, take advantage of
our services and contact STOBER Support.
STO
a
STO
b
STO
status
E67[0]
E67[1]
E67[2]
Fig. 7: Function test – switch sequences
STO , STO
a
STO
status
E67[0]
E67[1]
E67[2]
STO function test for drive controller parallel connection
Be aware that the STO
Manual PMC SR6 safety module
1005344-en-US-01
Intern
Information
Be aware that the test pulses may last a maximum of 500 ms. Starting at 500 ms,
the drive controller rates the pulses as an inconsistent request and switches to the
fault operating state.
1
0
1
0
1
0
1
0
1
0
1
0
Inputs of both PMC SR6 safety channels
b
STO status signal at terminal X12
At least one PMC SR6 safety channel requests STO activation (STO
STO = 0 V)
b
STO requests STO activation (STO
a
STO requests STO activation (STO
b
outputs cannot be connected in series for diagnostics.
status
Information
In order to ensure correct wiring of the drive controller parallel connection, you must
check the STO signal of each drive controller separately.
status
and STO as well as the expected results.
a b
= 0 V)
a
= 0 V)
b
= 0 V or
a
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