4.4.2
Voltage supply
DANGER
Hazard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Make sure that the following control and electrical requirements are met so the
safety laser scanner can fulfill its protective function.
•
The power supply unit must be able to jumper a brief power failure of 20 ms as
specified in IEC 60204-1.
•
The safety laser scanner requires a supply voltage of 24 V. For details about
tolerances and further connected loads,
•
The power supply unit must provide safe isolation according to IEC 61140 (SELV/
PELV as per IEC 60204-1).
13)
•
Make sure that the safety laser scanner is provided with an appropriate electrical
fuse protection. Electrical data for calculating what fuse is required,
.
•
Use the same earthing method for all devices that are electrically connected to the
safety laser scanner.
•
Voltage must be supplied in accordance with SELV/PELV (IEC 60204-1) for all
devices that are electrically connected to the safety laser scanner.
4.4.3
USB connection
The safety laser scanner has a USB connection for configuration and diagnostics.
The USB connection complies with the USB 2.0 mini-B standard (female connector).
The USB connection may only be used temporarily and only for configuration and diag‐
nostics. More information:
and
.
4.4.4
PROFINET (Process Field Protocol) is an Ethernet-based network used in industrial
automation.
With PROFIsafe , PROFINET is also suitable for safety-oriented data communication.
The connection can also be used for configuration, diagnostics, and data output.
Information about pin assignment:
see "Ethernet for PROFINET PROFIsafe, data output,
configuration and diagnostics (XF1, XF2)", page 83
4.4.5
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.
First, the operator must press a reset pushbutton to return the protective device to
monitoring status. Then, in a second step, the operator can restart the machine.
Depending on applicable national regulations, a restart interlock must be available if it
is possible to stand behind the protective field.
13)
The voltage supply according to SELV has proven to be more reliable in demanding environments.
4
PROJECT PLANNING
62
O P E R A T I N G I N S T R U C T I O N S | microScan3 – PROFINET
8021219/1ELL/2022-01-21 | SICK
Subject to change without notice
