Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Selected moni‐
toring case
0
0
0
0
0
0
1
0
7
0
0
0
0
0
0
0
1
8
Sequence of monitoring cases
The safe multibeam scanner does not check the order in which the individual monitor‐
ing cases are activated. If necessary, you must ensure the required sequence of moni‐
toring cases externally, e.g. by the device that provides the input signals for monitoring
case switching.
Invalid signals
If a combination of input signals cannot be associated with a monitoring case, the
safe multibeam scanner outputs an error of the category “Recoverable error”. This
monitoring is only performed if more than one monitoring case has been configured.
As soon as the combination of the input signals is valid and can be associated with a
monitoring case, the safe multibeam scanner switches back to normal operation and
activates the corresponding monitoring case.
Further topics
•
"Electrical installation", page 61
•
•
4.4.3
Overview
Depending on the regulations which apply at the place of installation, a restart interlock
may be required.
The restart interlock prevents the machine from automatically starting up, for example
after a protective device has responded while the machine is operating or after chang‐
ing the machine’s operating mode.
The protective device does not have an internal restart interlock. You must therefore
implement a restart interlock externally via the circuitry or the control if needed, e.g. in
connection with the SICK RLY3-OSSD2 / RLY3-OSSD3 safety relay.
Restart delay
The safe multibeam scanner has an integrated restart delay that you can use to delay
the restart of the safety output.
The restart delay does not comply with the applicable requirements for using a restart
interlock because the safety output starts automatically after the configured delay has
elapsed and no manual interaction is required.
4.4.4
External device monitoring (EDM)
The external switching elements (external device monitoring, EDM) must be inspected
in line with the regulations which apply at the place of installation or the required
reliability of the safety function.
External device monitoring (EDM) monitors the status of downstream contactors.
The protective device does not have an internal EDM. You must therefore implement
the EDM externally via the controller.
PROJECT PLANNING
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8025990/2021-03-03 | SICK
O P E R A T I N G I N S T R U C T I O N S | scanGrid2 CANopen
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Subject to change without notice
