Wachendorff OPUS A3, Operating Manual, Page: 7 / 36

Safety instructions, guarantee and liability
Seite 3 von 32
Serious bodily injury and property damage can occur in the event of unqualified
interventions in the device, or the system, or failure to heed the warning instructions
specified in this operating manual.
Consequently, only personnel who are appropriately qualified may undertake
interventions on this device, or on the associated system.
2.3 Power Supply
OPUS A3 is designed for 12 V and for 24 Volt battery systems. The operating
voltage range is 9-36 VDC, overvoltage resistance 48V for 2 minutes, inverse-
polarity protection up to -48 VDC.
CarGND (pin no. 4 on main connector) has to be connected to the chassis by a
conductor as short as possible. Even if there is no conductive chassis available (eg.
in E-vehicles) the pin has to be connected to the negative pole of the battery.
Otherwise there will be no protection against over voltage, short cut or ESD.
2.4 Interventions in the device
The OPUS A3 has been developed, manufactured, and tested in compliance with
applicable standards. When the handling guidelines and safety-related instructions
described here are complied with for project design, mounting, intended use, and
maintenance, normally the product poses no hazards relative to property damage or
to personal health. Nevertheless the device can cause residual hazards if it is used
or operated improperly by personnel who have not been trained.
In case of malfunctions or lacks please get in contact with the manufacturer. Any
interventions in the device are able to cause serious interferences of the security for
people and machines. They are not allowed and lead to disclaimer of liability and
guarantee exclusion.
WACHENDORFF is not liable for damage that occurs due to
improper misuse of the delivered components, or through
failure to heed the instructions
in the operating manual,
including the safety instructions.
WACHENDORFF is not liable for damage that occurs due to
unintended or intended changes of the WACHENDORFF board
support package or any other parts of the operating system.
WACHENDORFF is not liable for damage that occurs due to
improper programming and/or testing of the created
application that runs on the OPUS operator panels.