
BAL SX302 PFN 1.11 5/12
3 Safety precautions
Important information
Read these operating instructions before starting the unit. They provide you with important information
on the use, safety and maintenance of the units. This helps you to protect yourself and prevent
damage to the unit.
Information intended to help you to avoid death, bodily harm or considerable damage to
property is highlighted by the warning triangle shown here; it is imperative that this
information be properly heeded.
The operating instructions are intended for trained professional electricians familiar with the safety
standards of electrical technology and industrial electronics.
Store these operating instructions in an appropriate place.
The manufacturer is not liable if the information in these operating instructions is not complied with.
Safety
Components inside the units are energized with electricity during operation. For this reason,
mounting and maintenance work may only be performed by professionally-trained personnel
while observing the corresponding safety regulations.
The repair and replacement of components and modules may only be carried out by the manufacturer
for safety reasons and due to the required compliance with the documented unit properties.
The units do not have a power switch. They are operative as soon as the operating voltage is applied.
Intended use
The units are intended for use in industrial environments. They may only be operated within the limit
values stipulated by the technical data.
When configuring, installing, maintaining and testing the units, the safety and accident-prevention
regulations relevant to use in each individual case must be complied with.
Trouble-free, safe operation of the units requires proper transport, storage, installation, mounting and
careful operation and maintenance of the units.
Mounting and installation
The attachment options for the units were conceived in such a way as to ensure safe, reliable
mounting.
The user must ensure that the attachment hardware, the unit carrier and the anchoring at the
unit carrier are sufficient to securely support the unit under the given surrounding conditions.
The units are to be mounted in such a way that they can be opened up while mounted. Sufficient
space for the cables must be available in the unit near the cable entries.
Sufficient space is to be kept clear around the units to ensure air circulation and to prevent the build-
up of heat resulting from use. The relevant information must be heeded in the case of units ventilated
by other means.
When the housing fasteners are opened, the front frame of the housing hinges out upward or
downward (depending on the unit version) automatically.
Grounding
All devices are equipped with a metal housing. They comply with safety class I and require a
protective earth connection. The connecting cable for the operating voltage must contain a protective
earth wire of a sufficient cross section (DIN VDE 0106 part 1, DIN VDE 0411 part 1).