Rockwell Automation 1797-CEC FLEX Ex Bus Isolator and Flexbus Connector - Manual (Page 21)

FLEX Ex Bus Isolator and Flexbus Connector 21
Publication 1797-5.13 - June 2010
Attribute Value
Agency certification Marking and classification
FM Nonincendive, use for Class I, Division 2 Groups A, B, C
and D. Provides Intrinsically safe outputs to Class I,
Division 1, Groups A, B, C and D when installed in
accordance with Control Drawing No. 1797-6.5.6
UL, C-UL Associated Apparatus, Class I, Division 2, Groups A, B,
C, and D Hazardous Locations; Class I, Zone 2,

AEx nA[ia] IIC, Ex nA[ia] IIC T4 (Ta = 70 °C) when
installed in accordance with Control Drawing No.
1797-6.5.6
INMETRO [BR-Ex ib] IIC
Approval marks and certification number
EXAM (ATEX) DMT 00 ATEX E056
UL, C-UL File No.: E197983
FM
INMETRO
05/UL-BRAE-0010
IECEx IECEx BVS 09.0025
Declaration of conformity Marking
Directive 89/336/EEC (EMC)
Directive 94/9 EC (ATEX) II (2) G [Ex ib] IIC 
II (2) D [Ex ibD]

II 3G Ex nA IIC T4 X
IECEx [Ex ib] IIC
IEC temp code T4
1 A total of eight I/O modules can be attached to a 1794 FLEX I/O adapter. The 1797-CEC and 1797-BIC
modules are not included in this number. In intermixed systems, the number of 1797 FLEX Ex I/O
modules (attached onto the 1797-BIC module) plus the number of 1794 FLEX I/O modules (connected
between the adapter and the 1797-CEC module) cannot exceed eight.