Rockwell Automation 1797-PS2N2 FLEX Ex Power Supply - Manual (Page 10)

10 FLEX Ex Power Supply
Publication 1797-5.12 - June 2010
Specifications
Table 1 FLEX Ex Power Supply 1797-PS2N2
Attribute Value
IS module mounting location Class I Division 1 Groups A, B, C, D

Class II Division 1 Groups E, F, G 
Class III (only UL/cUL)
Class I Division 1 Groups B-D T4 (only FM)
IS output type Class I Division 1 Groups A, B, C, D

Class II Division 1 Groups E, F, G 
Class III (only UL/cUL)
Class I Division 1 Groups B-D T4

Class I Zone 1 AEx[ib] IIC (only FM)
Input connectors 24V dc, Terminals 1, 2, 4, 5
Voltage range 19…32V
Current consumption 3.1 A
Ripple 5% ac
Input power entrance 1 in. NPT, 6 in. conduit allowed between power supply and
seal (UL and C-UL)

1 in. NPT, 0 in. conduit allowed between power supply and
seal (FM)
Output connectors Terminals 10…17
Output power 4 x 8.5 W
Inset voltage range 19…32V dc
Voltage U
O
<9.5V
Current I
O
<1 A
C
o
(IIC) <500 nF
L
o
(IIC) <8
H
Output cable resistance, max
(both directions) <0.1

Isolation path 
Input power to output power

Output to output

Galvanic to UL 913 and CSA 157

None
Input power 55 W
Power dissipation 21 W
Thermal dissipation 71.67 BTU/hr
Conductors wire size 4 mm 2 (12 gauge) max wire rated for 100 °C (212 °F) or higher 
1.2 mm (3/64 in.) insulation max