ABB HART Industrial IT enabled TZIDC, Руководство по эксплуатации

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22 Electro-pneumatic positioner TZIDC 41/18-79 EN
3.3 Electrical connection
3.3.1 Safety instructions
3.3.2 General installation instructions
!
WARNING
• 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 chapter "Certificates" starting on
page 38).
!
NOTICE
Observe the following instructions. They are essential to proper operation
and functionality of the positioner.
General
•
Do not expose the terminals to strain.
Technical data
•
When connecting the device, make sure that the electrical specifica-
tions in chapter
4
"Technical data" are observed.
Power supply
•
Exclusively connect signal circuits with load-independent 4...20 mA
current to ter11/-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.
!
NOTICE
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.