Resolution and accuracy – Rockwell Automation 1794-IJ2XT FLEX I/O Frequency Input Modules User Manual User Manual
Page 34
Publication 1794-6.5.11 - September 2011
24 Install Your FLEX I/O Frequency Input Module
Resolution and Accuracy
1 Hz or 0.1 Hz (depending on frequency range bit setting), or + accuracy
specification listed below, whichever is greater.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
34
3V
6V
24V
Pwr
RET
50
mV
Sel
500/50
mV
3V
6V
24V
Pwr
RET
F
F
Channel 0 Frequency Input
Channel 1 Frequency Input
Out 1
Ret
Out 1
RET
G
G
RET
Channel 0 Gate Input
Channel 1 Gate Input
24V DC
Supply In
Sply 0
Gnd
Sply 0
Ret
24V DC
Supply Out
+V COM
+V COM
Channel 0 Output Supply
Channel 1 Output Supply
6 Chassis Ground
for Shields
Connections for Terminal Base 1794-TB3G shown
Chassis Gnd
Chassis Gnd
Out 0
Ret
Out 0
500/50
mV
50
mV
Sel
50
mV
Sel
500/50
mV
500/50
mV
50
mV
Sel
24V
Pwr
24V
Pwr
24V
Pwr
24V
Pwr
Sply 1
Gnd
Sply 1
Ret
+24V DC = Terminals C-34 and C-50
COM = C-35 and C-51
Chassis Ground = Terminals B-16, B-33, C-38, C-40…45, and C-47
NC = No connection
For daisychaining:
Supply in – C-34 (+) and C-35 (-)
Supply out – C-50 (+) and C-51 (-)
45346
Output Alarm Connections
Output Alarm
Connections
Channel 0 Terminals
(1)
Channel 1 Terminals
(1)
Supply
+
Supply
RET
Out +
Out
RET
Supply
+
Supply
RET
Out +
Out
RET
Supply
C-37
C-39
C-46
C-48
Output
B-17
B-18
B-31
B-32
(1)
Connect cable shields to GND connections.