Testing The Shutdown Paths - Siemens SINUMERIK 840D sl Function Manual

Safety Functions Integrated in the System/Drive
6.1 Safe standstill (SH)
6.1.2

Testing the shutdown paths

Description
The test stop is used to check the shutdown paths of both monitoring channels.
There is a test stop input (drive SGE). The acknowledgement is realized via the
drive SGA "status pulses cancelled". The pulse cancellation must be simulta-
neously initiated through both shutdown paths due to the fact that the Motor Mod-
ules and drive closed-loop control are cross-checked.
The user (machinery construction OEM) must configure the execution of the test
stop phase.
Note
A test stop can be simultaneously made for all axes of a drive unit.
Instant in time of the test stop
The shutdown paths must be tested (forced checking procedure) at a suitable in-
stant in time. This is generally carried-out after the machine has been powered-up
and afterwards in the setting-up mode once within a maximum of 8 hours. We rec-
ommend that the test is carried-out before opening protective devices/guards or
when the hazardous area is entered (e.g. when selecting the setting-up mode) if
the shutdown paths were not tested in the last 8 hours.
Note
The machinery construction OEM should define the "test shutdown paths" time in
an appropriate "test block".
Note
If the brake control is enabled, then when the test stop is initiated, the brake is
also controlled.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
© Siemens AG, 2006. All rights reserved
03.06