ABB TZIDC Commissioning Instructions page 37

Special conditions
• The local communication interface (LKS) may only be operated at Um ≤ 30 V DC outside the
potentially explosive area.
• Variants with special certification confirming that they meet the requirements for the
"flameproof enclosure" type of ignition protection may not be used as "intrinsically safe", if
they have been previously used as a flameproof type of ignition protection.
• When used with gases from group IIA and a temperature class of T1 for auxiliary power, the
TZIDC positioner may only be used outdoors or inside sufficiently ventilated buildings.
• The gas supplied must be kept sufficiently free of air and oxygen to prevent an ignitable
atmosphere from forming.
• The equipment may only be used as a II 2 D type device in areas where the level of
mechanical hazard is "low".
• Cable and wire entries that meet the requirements of EN 61241-11 for Category II 2 D as
well as the ambient temperature range must be used.
• Prevent electrostatic charging due to propagating brush discharge when the equipment is
used for applications involving combustible dust.
CI/TZIDC/110/120-EN TZIDC, TZIDC-110, TZIDC-120
Ex relevant specifications
37