
FLEX Ex 85-253V AC In/Quad-Ex DC Out Power Supply
5
Publication
1797-5.33 - December 2003
The total number of power supplies needed depends on the modules used
and the total system configuration. The following illustration shows how this
example may be configured.
IMPORTANT
Even though modules may be supplied with power from the
same power supply output channel, galvanic isolation in the
module provides module to module galvanic isolation.
Depending upon the module-type, galvanic isolation
(channel-to-channel within the module) may or may not be
provided. See the module’s specifications for more
information.
IS Pwr
Safe Area
Hazardous Area
1797 power supply
1797 power supply
1797 power supply
ACNR Spare
IE8
OE8
IRT8
Spare
Spare
IJ2
IJ2
ACNR
OB4
OB4D
IBN16
IBN16
IBN16
IE8
IRT8
OE8
RPA
RPFM
RPFM
IS 1797 I/O
IS 1797 I/O
IS 1797 Fiber Hub
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
IS Pwr
EEx d
/e
EEx ib
EEx d
/e
EEx ib
EEx d
/e
EEx ib
41306
Unsafe
Power
Entrance
Spare
Unsafe
Power
Entrance
Unsafe
Power
Entrance
Allen-Bradley Drives