Intrinsically safe specifications, Fm input i/o entity parameters – Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual User Manual
Page 228
Publication 1797-6.5.6 - June 2005
50-2 1797-IJ2 FLEX Ex Frequency Input Module
Intrinsically Safe
Specifications
For a full list of specifications, refer to FLEX Ex Frequency Input Module
Installation Instructions, publication 1797-5.7.
FM Input I/O Entity
Parameters
Wiring Methods
• Wiring method 1 - Each channel is wired separately.
• Wiring method 2 - Multiple channels in one cable, providing each
channel is separated in accordance with the National Electric Code
(NEC).
Table 1: Entity Values for Field Device Connections
Operating Temperature
-20 to +70
o
C (-4 to +158
o
F)
Agency Certification
Class I Division 1 Groups A-D T4
Class I Zone 1 AEx ib/[ia] IIC T4
Certificates
FM Certificate Number 3009806
FM
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
6, 7;
9, 8;
23, 24
26, 25
14.7 15.0
-
-
A, B
0.65
130.0
C, E
1.95
390.0
D, F, G
5.20
1040.0
1 and 2
Any one
channel
5, 3;
10, 12;
22, 20;
27, 29
14.7 10.0
-
-
A, B
0.65
300.0
C, E
1.95
900.0
D, F
5.20
2400.0
1 and 2
Any one
channel
5, 3, 6, 4;
10, 12, 9, 11;
22, 20, 21, 23;
27, 29, 26, 28
14.7 10.0
-
-
A
0.65
300.0
C, E
1.95
900.0
D, F, G
5.20
2400.0
1 and 2
Any one
channel
0, 2, 3;
1, 2, 3;
14, 12, 13;
15, 12, 13
26.5 82.0
-
-
A, B
0.13
4.5
C, E
0.39
13.5
D, F, G
1.04
36.0
Wiring
Method
Channel
Terminals
V
max
(V)
I
max
(mA)
Groups
C
i
(
µF)
L
i
(mH)
1 and 2
Any one
channel
17, 18, 37
or
31, 32, 46
28
93.0
A, B
0
0
C, E
0
0
D, F, G
0
0