Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 198)

Publication 1797-6.5.6 - June 2005
43-4 1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module
Wiring methods must be in accordance with the National Electric Code,
ANSI/NFPA 70, Article 504 and 505. For additional information refer to
ANSI/ISA RP12.6.
This module, 1797-OB4D, must be used with terminal base 1797-TB3 or
1797-TB3S.
Terminals 2, 3, 6, 7, 10, 11, 14, 15, 17-32, 36-39, and 46-49 shall not be
connected.
WARNING: Substitution of components may impair intrinsic safety.