HE 5712 Operating Instructions
# 372048 | Version 1.4
7
2.2
Safety in the individual operating phases
When installing the control unit and during operation, the following safety instructions must be
observed.
Danger of Electrocution!
Before working on the device, switch off all power supplies used. The
electrical cables must be laid according to the respective national
regulations (in Germany VDE 0100). The measuring lines must be laid
separately from the mains leads. The connection between the connection
for the functional earth (in the respective device carrier) and a protective
conductor must be established.
Danger of Electrocution!
Any interruption of the protective conductor in the device carrier can lead
to the device becoming dangerous. Intentional interruptions are not
permitted. If it is suspected that safe operation is no longer possible, the
device is to be decommissioned and secured against unintentional
operation.
Danger of Electrocution!
Do not open the device while it is live! When opening the devices or
removing covers and parts, live parts may be exposed. Connecting points
can also be live!
WARNING!
The device must never be put into operation despite any visible damage.
WARNING!
During installation, commissioning, maintenance and troubleshooting,
observe the accident prevention regulations applicable to your system,
e.g. DGUV Regulation 3 "Electrical installations and equipment".
WARNING!
Clean dirty contacts with oil-free compressed air or with spirit and a lint-
free cloth.
Warning of material damage caused by electrostatic charge!
Observe the safety measures according to BS EN 61340-51/-3 to avoid
electrostatic discharge!
Explosion Prevention!
The HE 5712 Compact
(
Fig. 1
)
is suitable for use in explosion zone 22.
Before opening the device, it is essential to ensure that no explosive
environmental conditions, such as dust generation, exist
