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1.2.3 Electrical safety
!
WARNING
!
NOTICE
!
NOTICE
8
•
Observe the common VDE safety regulations and the accident preven-
tion rules of the Employers Liability Insurance Association.
•
Observe the common standards and safety regulations for the installa-
tion and operation of electrical systems.
•
When connecting the device, observe all electrical specifications in
these operating instructions or in the data sheet.
•
For the electrical installation of explosion-protected devices, observe all
standards, regulations and directives governing explosion protection
and applicable for the construction and use of explosion-protected sys-
tems, especially the DIN/VDE directives, the directives for explosion
protection (VDE 0165 or EN 60079), and the special requirements and
specifications for your devices (see the following chapter "Explosion
protection" and chapter "Certificates" starting on page 38).
Power supply
•
Exclusively connect signal circuits with load-independent 4...20 mA
current to terminals +11/-12. Direct connection of a power supply, e.g. a
24 V DC power supply unit, will damage the input.
•
The maximum current must not exceed 500 mA, even in case of a mal-
function or polarity reversal.
Electromagnetic interference
•
Do not lay signal lines close to power lines. Power lines produce inter-
ference in their near vicinity, which may affect measured value trans-
mission on the signal line.
•
Keep the case closed. When the case is open the positioning action
may be affected through electromagnetic interference. This may result
in a permanent positioning error, especially when the autoadjustment
function is run with the case open.
Electro-pneumatic positioner TZIDC
41/18-79 EN
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