Chapter 32, 1797-ij2 flex ex frequency input module, General information – Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual User Manual
Page 153: Module installation, Inputs, Wiring to a 1797-tb3 or -tb3s terminal base unit, Chapter, Connect wiring to the terminal base as shown below
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Publication 1797-6.5.6 - June 2005
Chapter
32
1797-IJ2 FLEX Ex Frequency Input Module
General Information
Modules must be used with a 1797-TB3 or -TB3S intrinsically safe terminal
base unit.
Module Installation
Rotate keyswitch on terminal base unit clockwise to position 1 as required for
this type of module. Do not change the position of the keyswitch after
wiring the terminal base unit.
Inputs
The frequency input module has 2 input channels. Each input can accept
inputs from magnetic pickups or proximity probes. Each input channel has 2
input selections: frequency input or gate input. Do not apply any
non-intrinsically safe signals to this module.
The channels in this module are electrically connected to each other.
Wiring to a 1797-TB3 or
-TB3S Terminal Base Unit
Connect wiring to the terminal base as shown below.
IMPORTANT
When interconnecting several lines, you must consider the
total accumulated power and check for intrinsic safety.
Row A
Row B
Row C
+V
-V
42334
3V
V+
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
6V
GND 50
mV
Sel
N
500/50
mV
8V
8V N
GND
6V
V+
3V
R0 NO R0 NC
-V
No connection allowed to terminals 19, 30, 36, 38, 39, 47, 48, 49
+V
R0 COM
R1 COM
50
mV
Sel
500/50
mV
Channel 0 Frequency Input
Channel 1 Frequency Input
GND
GND 50
mV
Sel
N
500/50
mV
8V
8V N
50
mV
Sel
500/50
mV
GND
R1 NO R1 NC
Channel 0 Gate Input
Channel 1 Gate Input