Complementary information
•
When the input signal is changed, the previous monitoring case remains active for
the duration of the set switch-on delay. If no valid input signal is present after the
switch-on delay has elapsed, the behavior depends on the sequence monitoring:
°
If monitoring of the switching sequence (sequence monitoring) is not acti‐
vated, the OSSDs switch to the OFF state after the switch-on delay has
elapsed. If a valid input signal is present within another second, the safety
laser scanner activates the new monitoring case. If no valid input signal is
present within this time, the OSSDs remain in the OFF state and the safety
laser scanner displays an error and must be restarted.
°
If monitoring of the switching sequence (sequence monitoring) is activated,
the OSSDs switch to the OFF state after the switch-on delay has elapsed and
the safety laser scanner displays an error and must be restarted.
•
A short-circuit or cross-circuit on one or more channels of the static control inputs
can cause the wrong monitoring case to be activated.
°
Some safety controllers detect the short-circuit or cross-circuit and switch off
the outputs concerned or all their outputs.
°
Due to the short-circuit or cross-circuit, one or more input channels of the
safety laser scanner can nevertheless deliver the HIGH signal level. This may
result in a valid input signal so that a monitoring case is activated.
°
For this reason, laying the cables for the input signals in a protected manner
is recommended. Otherwise, setting the switch-on delay to 0 s and activating
sequence monitoring is recommended. Carrying out regular thorough checks
at short intervals is also recommended.
Further topics
•
"Settings for monitoring case tables", page 99
4.5.6
Universal inputs, universal outputs, universal I/Os
The safety laser scanner is equipped with universal I/Os.
Universal I/O can be configured as universal input or as universal output.
Depending on the device, a universal input can be used for resetting, external device
monitoring (EDM), sleep mode, or restarting the protective device, for example. If sleep
mode is activated by a universal input, the sleep mode must not be used for safety
applications. Certain universal inputs can also be used in pairs as a static control input.
The function of a universal output is configurable. Which functions are available
depends on the device. Possible signals are, for example: reset required, contamination
warning.
A universal output must not be used for safety functions.
b
Use the same earthing method for all devices that are electrically connected to the
safety laser scanner.
b
Voltage must be supplied in accordance with SELV/PELV (IEC 60204-1) for all
devices that are electrically connected to the safety laser scanner.
b
All devices connected to a local input or output of the safety laser scanner must
be in the same SELV/PELV circuit as the safety laser scanner.
Information about electrical properties:
see "Technical data", page 131
Information on pin assignment:
see "Electrical installation", page 66
4.5.7
Depending on the regulations which apply at the place of installation, a restart interlock
may be required.
PROJECT PLANNING
4
8023152/1G5N/2022-06-28 | SICK
O P E R A T I N G I N S T R U C T I O N S | outdoorScan3 Core I/O
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Subject to change without notice