Rockwell Automation 1797-PS2N2 FLEX Ex Power Supply - Manual (Page 15)

FLEX Ex Power Supply 15
Publication 1797-5.12 - June 2010
the approved values of C
a
and L
a
of the associated apparatus are greater than
C
i
+ C
cable
and L
i
+ L
cable
respectively for the intrinsically-safe apparatus.
Wiring methods must be in accordance with the NEC, ANSI/NFPA 70,
Article 504 or the CEC CSA C22.1, Part 1, Appendix F. For additional
information refer to ANSI/ISA RP12.6.
Wiring methods must be in accordance with the NEC, ANSI/NFPA 70,
Article 501 or the CEC CSA C22.1, Part 1, Section 18.
For mounting of the power supply, conduit runs must have sealing
fittings connected within 6 inches of enclosure.
The wiring contained within the nonintrinsically-safe wiring
compartment and the intrinsically-safe wiring compartment shall be separated
from each other. Care must be taken to guarantee the separation of
nonintrinsically-safe and intrinsically-safe wiring. The partitions within the
power supply provide the necessary isolation for the electronics and the
wiring, however, extreme care must be taken to guarantee wires are contained
within their appropriate compartment and cannot contact any of the
electronics.
Cable must be rated at a minimum of 100 °C (212 °F).
Warning: Keep cover tightly closed when circuits are alive.
After disconnecting power supply, wait 15 minutes before removing
cover.
No live maintenance.
The ambient operating temperature (T
AMB
) for this system is 
-20…70 o C.
Redundant power supply connection. 11