Customer Connections; Typical Wiring Configurations - Allen-Bradley FLEX Ex 1797-PS2E2 Installation Instructions Manual

6. Replace the lid of the Ex e terminal box.
7. Screw the lid back into place making sure all of the screws are tight.

Customer Connections

Type of Power Input
dc
Dual Input
Diodes
+
Vin1
-
+
Vin2
-
Chassis GND

Typical Wiring Configurations

1797-PS2E2
Hazardous
Incoming
Power
Keep Wires Separate
IS Isolation
Hazardous to IS
Daisy-chaining
+V, -V
Combination
+V, -V
IS-safe
Output Power
FLEX Ex Power Supply 11
IS Limiters
Voltage and Current
You can use the daisy chain configuration if the
total module power draw is < 8.5 W. Otherwise,
power is connected to individual modules.
<8.5 W
<8.5 W
+V, -V
Wiring when total module current
power is greater than 8.5 W.
Other variations are possible depending
upon individual module power.
Publication
1797-IN535F-EN-P - August 2017
IS Power Output
-V
Out 1
+V
-V
Out 2
+V
-V
Out 3
+V
-V
Out 4
+V
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