Figure 52: Screw terminal block of the system plug
T
he system plug has different pin assignments depending on the variant.
NOTE
•
All in
puts and outputs of the device must be used only in the specified manner.
•
Enclosure rating IP65 cannot be guaranteed if the cable gland/blind plug are
missing or not fastened, or the fixing screws of the system plug are missing or not
fastened.
Wiring in accordance with EMC regulations
T
he quality of the shield is essentially dependent on the quality of the connection of the
screen. In general, the best shielding effect can only be achieved by applying the screen
at both ends using large area connections.
b
To connect the screen on the safety laser scanner, use the M12 EMC-compliant
cable gland (see table 43, page 138).
b
Use similar cable glands on the incremental encoders.
b
If it is not possible to connect the screen via threaded fittings (e.g. on bus nodes),
connect the screen physically close to the device using a metal clamp, e.g., to a
control cabinet chassis.
NOTE
•
If y
ou want to operate two safety laser scanners in a system (communication via
EFI), then the same earthing method must be used for both safety laser scanners.
•
If there is a protection earth (PE) in an installation, it can be used to connect the
functional earth (FE). A functional earth connection (FE) must never be used as a
protection earth (PE), however.
Functional earth
T
o achieve the specified EMC safety, the functional earth (FE) must be connected, e.g.,
to the central earth star point of the vehicle or system.
Further topics
•
"Pre-assembled system plug", page 71
6 ELE
CTRICAL INSTALLATION
66
O P E R A T I N G I N S T R U C T I O N S | S300 8010948/ZA21/2020-06-18 | SICK
Subject to change without notice
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