Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 117)

Publication 1797-6.5.6 - June 2005
1797-OB4D FLEX Ex 24V dc Non-Isolated Source 4 Output Module 25-3
Table 1: Entity Values for Field Device Connections
Wiring
Method
Channel Terminals V
oc
(V)
I
sc
(mA)
V
t
(V)
I
t
(mA)
Groups C
a
(
µF)
L
a
(mH)
1 and 2 Any one
channel
e.g. ch0
0(+), 1(-) 27.4 110.0 - - A, B, IIC 0.03 2.0
C, E, IIB 0.09 8.0
D, F, G, IIA 0.24 16.0
IMPORTANT
A terminal base may or may not have an I/O module
installed.
1797- OB4D Allen-Bradley
B - A
0 1 2 3 4 5 6 7 PWR
7
4 Point Source Output Module
FLEX Ex Discrete
Output I/O Module
LEDs
Female Bus
Connection
Field Wiring
Terminals Terminal
Base
Terminal
Base Key
Male Bus
Connection
Key Position for
Terminal Base
Insertion
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