Sto Function Test - Pilz Intern PMC SR6 Manual

Safety module

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STO function test

An STO function test requires that both STO

checked for plausibility with the resulting STO status signals. In the event of a fault, the safety

function must be activated at both STO inputs. The drive controller must no longer be enabled.

STO

status

you are working with a fieldbus system, you can access detailed status information by transmitting

parameter E67 STO status, array E67[0] – E67[2]. They can be used as an alternative to STO

the plausibility check.

In applications with increased safety requirements such as SIL 3 or PL e, a safety controller must

check the connecting wiring. In applications with reduced safety requirements (i.e. up to SIL 2, PL d),

a standard controller can perform the STO function test. More information on the use of a standard

controller can be found in the IFA Report 2/2016 Sicherheitsbezogene Anwendungssoftware von

Maschinen – die Matrixmethode des IFA (Safety-related application software for machinery – The IFA

matrix method); see the chapter 9.5 Einsatz von Standardkomponenten für fehlerbeherrschende

Maßnahmen.

Manual PMC SR6 safety module

1005344-en-US-01

Intern

is made available directly on terminal X12 of the drive controller for monitoring purposes. If

Information

During the STO function test, the drive controller switches to the

operating state.

and STO

signals be switched in alternation and

for

status

switch-on lockout

Pilz | 28

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Table of Contents