Starting The Spl - Siemens SINUMERIK 840D sl Function Manual

8.5.5

Starting the SPL

Preconditions
The NCK-SPL is active after the control has booted, if at least
1. The functions SBH/SG and "external STOPs" have been enabled for at least one axis using
$MA_/$MD_SAFE_FUNCTION_ENABLE,
2. one of the NCK-SPL interfaces is used.
This means that an axis-specific SGE/SGA was parameterized at one of the SPL interfaces
using its assignment MD.
In this case, the "external STOP A" must be parameterized at the SPL interface for all of the
axes that use Safety Integrated.
NCK-SPL (SAFE.SPF) can be started in three different ways:
● Start via safety power on
● Start via PROG_EVENT
● Start via the PLC program
Note
System utilization
Ensure that SPL is only started in one channel. Otherwise, SI synchronization routines run a
multiple number of times, which results in an excessive system utilization.
SPL start without axis-specific safety enable
When the machine is being commissioned, it may be necessary to start SPL without enabling
axis-specific safety-relevant functions.
It is therefore possible to handle general machine functions (hydraulics, Emergency Stop)
before the axis is commissioned. This is only possible in the commissioning state of the SPL
($MN_PREVENT_SYNACT_LOCK[0,1]==0 and DB18.DBX36.0==0). This state is displayed
when the SPL starts using Alarm 27095 "%1 SPL protection not activated".
If an attempt is made to start the SPL in the protective state (after commissioning has been
completed) without an axis-specific safety function having been activated, then Alarm 27096
is output. The SPL is started if the SPL-CDC is not activated.
Further, Alarm 27096 "SPL start not permitted" is output if SPL protection is activated, however
the drive objects of all enabled SI axes in the complete system have been deactivated (drive
parameter p0105). As long as one SI axis is active, the alarm is not output.
Start via safety power on
When the "Safety power on" function is activated, SAFE.SPF is automatically started when
booting. The system starts even if alarms are present. The function is activated by setting bit
5 (safety power on) in machine data 20108 $MC_PROG_EVENT_MASK. A possible
SAFE.SPF call in the PROG_EVENT.SPF can be removed.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Connecting sensors and actuators
8.5 Safe programmable logic
265