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TZIDC-110, TZIDC-120
DIGITAL POSITIONER | OI/TZIDC-110/TZIDC-120-EN REV. H
19
Special conditions
• Devices must only be connected to circuits in zone 2 if they
are suitable for operation in zone 2 potentially explosive
atmospheres and for the conditions prevailing at the
installation location (manufacturer's declaration or
certificate from an inspection authority).
• For the ‘Feedback on the actuator position using proximity
switches’ circuit, measures outside of the device must be
implemented to prevent an up-scale of the rated voltage by
more than 40 % in the event of transient disturbances.
• It is only permissible to connect, disconnect, and switch live
circuits during installation or maintenance, or for the
purpose of carrying out repairs. Comment: It is considered
very unlikely that a potentially explosive atmosphere would
be present in zone 2 at the same time that installation or
maintenance/repair work was being carried out.
• Only non-flammable gases may be used for the pneumatic
auxiliary power.
• Only use suited cable entries that meet the requirements of
EN 60079-15.
Summary of Contents for TZIDC-110
Page 31: ...TZIDC 110 TZIDC 120 DIGITAL POSITIONER OI TZIDC 110 TZIDC 120 EN REV H 31 Page 2 of 5 ...
Page 33: ...TZIDC 110 TZIDC 120 DIGITAL POSITIONER OI TZIDC 110 TZIDC 120 EN REV H 33 Page 4 of 5 ...
Page 66: ...66 TZIDC 110 TZIDC 120 DIGITAL POSITIONER OI TZIDC 110 TZIDC 120 EN REV H Notes ...
Page 67: ...TZIDC 110 TZIDC 120 DIGITAL POSITIONER OI TZIDC 110 TZIDC 120 EN REV H 67 Notes ...