Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 227)

1 Publication 1797-6.5.6 - June 2005
Chapter
50
1797-IJ2 FLEX Ex Frequency Input Module
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
ATTENTION
Do not use any unused terminals on this terminal base unit.
Using these terminals as supporting terminals can result in
damage to the module and/or unintended operation of
your system.