
Technical Information Chapter 4
TiM310-1030000S01
Electrical installation
8014884/YK97/2015-04-27 ©SICK AG · Germany · All rights reserved · Subject to change without notice 15
4.3 Notes on electrical installation
When the cover of the USB socket is open or the USB cable is connected, the TiM3xx
must not come into contact with moisture and dust. In this status, the TiM3xx does not
correspond to any specified IP enclosure rating.
Use the supplied seal for the USB connection to prevent contact with moisture and dirt.
When operating the USB interface, ESD/EMC interferences can lead to an interruption
of the USB connection. To continue with the data transfer, disconnect the USB cable
from the TiM3xx and reattach it to establish contact. To re-establish communication
between TiM3xx and PC, select COMMUNICATION > GOONLINE in the SOPAS configuration
software.
Electrical connections between the TiM3xx and other devices may only be connected
or disconnected when the system is not live, otherwise the devices may be damaged.
All connection cables on the TiM3xx may not exceed a length of 3 m (9.84 ft) in order
to ensure that it conforms with the CE.
Conducting cross sections of the supply cable from the customer's power system
should be selected and perform in accordance with the applicable standards.
Protected the TiM3xx with an external 0.8 A delay-action fuse at the start of the supply
cable from the point of view of the power supply. The connection module already has a
suitable fuse.
All electrical circuits connected to the TiM3xx must be designed as SELV or as PELV
electric circuits (SELV = Safety Extra Low Voltage, PELV = Protective Extra Low Voltage).
When constructing a connection box with 15-pin D-sub HD socket do not use the re-
served pins of the socket (e.g. as solder post)!
Do not switch on the supply voltage for the TiM3xx until the connection work has been
completed and wiring work has been checked carefully.
4.4 Prerequisites for safe operation of the TiM3xx in a system
The TiM3xx is designed and tested for electrical safety according to the standard EN 60950-
1 (2006-04)/A11 (2009-03):
It is connected to peripheral devices (power supply, control, actuators) via shielded cables.
The cable shield e.g. of the supply line is therefore flush with the metal housing of the
TiM3xx. The device can either be grounded via the cable shield or via the two straight plates.
If the peripheral devices also have metal housing and if the cable shields also flush with
their housing, it is assumed that all devices involved in installation have the same ground
potential.
This is achieved by observing the following conditions for instance:
mounting of devices on conducting metal surfaces
professional grounding of devices/metal surfaces in the system
low-impedance and current-conducting equipotential bonding between areas with dif-
ferent ground potentials if necessary.
If these conditions are not met, e.g. on devices in a widely distributed system across several
buildings, equipotential bonding currents may, due to different ground potentials, flow via
the cable shields between the devices, which can lead to dangers.