Iecex - 'Ex I' And 'Ex N' Type Of Protection - ABB TZIDC Commissioning Instruction

10 TZIDC, TZIDC-110, TZIDC-120 DIGITAL POSITIONER | CI/TZIDC/110/120-EN REV. E
... 2 Use in potentially explosive atmospheres
... TZIDC – Ex relevant specification
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 'digital feedback with proximity switches' circuit,
external measures must be implemented to prevent the
rated voltage from being exceeded 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. Note: It is considered very
unlikely that a potentially hazardous atmosphere would be
present in zone 2 at the same time that installation or
maintenance or repair work was being carried out.
• Only non-flammable gases may be used for the pneumatic
power supply
• Only suited cable entries must be used that meet the
requirements of EN 60079-15.
IECEx – 'Ex i' and 'Ex n' type of protection
Ex marking
Ex marking
Marking
Type Examination Test Certificate
Shown as
Type
Standards
Temperature Data
Temperature class
T4
T6*
* When using the 'digital feedback' plug-in module in temperature class
T6, the maximum permissible ambient temperature range is −40 to 35 °C.
Electrical Data
Electric data for TZIDC with Ex ia IIC or Ex ib IIC marking. In
'intrinsic safety Ex ib IIC / Ex ia IIC' type of protection, only for
connection to a certified intrinsically safe circuit.
Current circuit (terminal)
Signal circuit
(+11 / −12)
Contact input
(+81 / −82)
Switch output
(+83 / −84)
Local communication
interface (LCI)
Ex ia IIC T6 or T4 Gb
Ex ib IIC T6 or T4 Gb
Ex nA IIC T6 or T4 Gc
IECEx TUN 04.0015X
Intrinsic safety 'I' or
Type of protection 'n'
IEC 60079-0
IEC 60079-11
IEC 60079-15
TaTZIDC Ex ia IIC resp. Ex ib IIC
Ambient temperature
−40 to 85 °C
−40 to 40 °C
Electrical information (maximum values)
U = 30 V C
i i
I = 320 mA L = negligibly small
i i
P = 1.1 W
i
U = 30 V C
i
I = 320 mA L = negligibly small
i i
P = 1.1 W
i
U = 30 V C
i
I = 320 mA L = negligibly small
i i
P = 500 mW
i
Only for connection to a
programming device outside of the
hazardous area.
(See special conditions).
5
= 6.6 nF
= 4.2 nF
i
= 4.2 nF
i