Safety instructions
6A3924-1.1 HBM: public FIT®7A
machinery. They are familiar with the operation of the
equipment and technologies described in this docu
mentation.
SAs commissioning engineers or service engineers,
they have successfully completed the training to qual
ify them to repair the automation systems. They are
also authorized to activate, ground and label circuits
and equipment in accordance with safety engineering
standards.
Working safely
SThe device must not be directly connected to the
power supply system. The supply voltage must be
between 10 and 30 VDC.
SError messages should only be acknowledged once
the cause of the error is removed and no further dan
ger exists.
SMaintenance and repair work on an open device with
the power on may only be carried out by trained per
sonnel who are aware of the dangers involved.
SAutomation equipment and devices must be designed
in such a way that adequate protection or locking
against unintentional actuation is provided (e.g.
access checks, password protection, etc.).
SFor those devices operating in networks, safety pre
cautions must be taken both in terms of hardware and
software, so that a line break or other interruptions to
signal transmission do not cause undefined states or
loss of data in the automation device.
SAfter making settings and carrying out activities that
are password-protected, ensure that any controls that
may be connected remain in a safe condition until the
switching performance of the device has been tested.
