3. Explosion Protection Instrumentation in Zone 2/Division 2
3-1
TI 33Q01J30-01E
3. Explosion Protection
Instrumentation in Zone 2/Division 2
3.1 Non-Incendive
Non-Incendive (hereafter described as NI), especially in North America, represents one of the
explosion protection constructions for explosion-proof apparatus used in hazardous areas.
NI is a construction that enhances safety not to cause a spark, an arc or high surface
temperatures in a normal operation.
3.1.1
CSA NI (CSA Non-Incendive)
A node unit for FIO, an I/O module (FIO), and an optic repeater of CENTUM have acquired CSA
NI certificates of the following standards from CSA. A node unit for N-IO and N-IO field enclosure
have acquired CSA NI certificates of the following standards from FM.
This approval proves that the products above can be used in hazardous areas such as Class I
and Division 2 (*1) and that the I/O module for FIO/N-IO and base plate can be directly connected
to an CSA NI approved field device installed in hazardous areas such as Class I and Division 2.
In addition, I/O modules (FIO) and base plate installed in non-hazardous areas can be directly
connected to an CSA NI approved field device installed in hazardous areas such as Class I and
Division 2.
*1:
Class I, Division 2
This places where gases or vapors do not form a potentially explosive atmosphere in a normal state, or even if so, the
atmosphere exists for only a short time.
E
xplosion-proof specifications, Complied standard, Compliant
Products, and Parameters
The references are listed in the following table.
Explosion
protection
construction
Reference of Explosion-proof specifications, Complied Standard, Compliant
Products, and Parameters
FIO System
N-IO System
FCU
FIO Node
Unit
FCU
N-IO Node
Unit
FIO Node
Unit
N-IO field
enclosure
A2BN4D A2BN5D
CSA Non-Incendive
–
App. 1.2
–
App. 1.3
App. 1.2
App. 1.4
App. 1.5
App. 1.6
–: Non-compliant
Note: Regarding the latest conformity standard, refer to the GS 33J01A10-01EN “Integrated Production Control System CENTUM VP
System Overview”.
Special Condition for Use
The A2BN4D base plate for barrier shall be used with I/O module (A2MMM843, A2MDV843) and
MTL MTL4500 module series.
The A2BN5D base plate for barrier shall be used with I/O module (A2MMM843, A2MDV843) and
P+F HIC module series.
Dec .3, 2021-00
