42/18-54 EN Electro-pneumatic positioner TZID 23
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").
• Explosion-proof devices may only be supplied with safe extra-low vol-
tage (SELV) according to EN 60 950.
• When using the positioner “intrinsically safe with flammable gas”
observe the special conditions stipulated in the certificates.
!
CAUTION
Observe the following instructions. They are essential to proper operation
and functionality of the positioner.
General
• Do not expose the terminals to strain.
• Exclusively connect signal circuits with load-independent 4...20 mA
current to terminals +11/-12.
• Make sure that the maximum current does not exceed 300 mA
(150 mA for intrinsically safe devices) in case of a malfunction and
150 mA in case of polarity reversal.
Technical data
• When connecting the device, make sure that the electrical specifica-
tions and limits in the technical data section of this manual or in the
data sheet are observed.
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.
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