Output name
Function
Position CAM
This is the output for
Safe CAM
. It indicates a signal High when the
position is within the permitted range. The signal is linked to
Moni‐
tor Status
and triggers a stop when the current position is not within
the permitted range.
The
SCA - Safe CAM
diagnostics output marked in blue feeds the
signal from MOC1 to the CPU logic. This output should not be used
for safety signals owing to the long transmission time.
If the current position is not within the permitted range, an entry is
made accordingly in the fault history through the
Message Generator
function block.
Speed Monitor Status
The
Speed Monitor Status
output is set to High during fault-free oper‐
ation. It switches to Low if the speed exceeds the permitted range.
Within this application, an entry is made accordingly in the fault
history through the
Message Generator
function block.
This logic is not safety-relevant. The
Monitor Status
signal takes care
of the safe switch-off process.
The
Speed Monitor Status
diagnostics output feeds the signal from
MOC1 to the CPU logic. This output should not be used for safety
signals owing to the short transmission time.
7.6.3
Safe Stop page
The Safe Stop function block of the MOC module is used to trigger and monitor the safe
stop of a drive system. The drive has to be stopped in a controlled way. The braking
torque of the drive can be used to stop the drive more quickly than would be possible in
the case of an uncontrolled stop.
Figure 47: Safe Stop page view
Inputs
•
Motion IN
•
Safe Stop 1a
•
Safe Stop 2a
•
Safe Stop 2b
•
Reset
•
Inhibit Motion bits reaction
Outputs
•
Enable torque
•
Enable brake
•
Stop request
CONFIGURATION
7
8020941/12O9/2019-08-05 | SICK
O P E R A T I N G I N S T R U C T I O N S | Safe Linear Positioning
69
Subject to change without notice
