User manual

Publication 1797-6.5.1 - April 1999
Applying FLEX Ex Analog I/O Modules 6-7
Assign the next module to another output as before. When all four power
supply outputs are utilized, add another power supply to the system, see the
figure below.
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 OB4D 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

ATTENTION: Power supply outputs can never be paralleled.
Paralleling outputs voids all intrinsic safety certifications.