User manual

Publication CIG-WD001B-EN-P - May 2005
1794 FLEX I/O Modules 19-23
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
Channel 0 Counter/Frequency Input Channel 1 Counter/Frequency Input
6 Chassis Ground
for Shields
Row 1
Row 2
Row 3
24V Inputs 24V Inputs
5V Inputs 5V Inputs
AA
BBZZZ O0 O1 A A BB ZZO2 O3
A A B B R0 R1 R2 R3
COM+24V-V+V-V+V+24V COM
Where: A, A = incremental encoder input A (+5 or +24V dc)
B, B
= incremental encoder input B (+5 or +24V dc)
Z, Z
= incremental encoder input Z (+5 or +24V dc)
O = sourcing outputs
R = returns for sourcing outputs
+V = +5 or +24V dc isolated power externally supplied for outputs (1A max)
-V = negative isolated power connection (1A max)
+24V dc = 24V dc terminal base power for module
COM = return for +24V dc terminal base power for module
Chassis Gnd = chassis ground for input or output cable shields
Power for 00 to 01 Power for 02 to 03
C
B
A
Incre men tal
En cod er
Inpu ts
Cha nnel 0 Channe l 1
+24V In put s +5V I npu ts +24V Inpu ts +5V Inp uts
Input A A-0 B-17 A-8 B-25
Input A
A-1 B-18 A-9 B-26
Input B
A-2 B-19 A-10 B-27
Input B
A-3 B-20 A-11 B-28
Input Z A-4 B-21 A-12 B-29
Input Z
A-5 B-22 A-13 B-30
Output s Sourcing
Out
Return Outputs Sourcing
Out
Return
A-6 B-23 A-14 B-31
A-7 B-24 A-15 B-32
+24V Terminal Base Power Terminals C-34 and C-50
24V COM Terminals C-35 and C-51
+5V or +24V power Terminals C-37 and C-46
-V output power Terminals C-39 and C-48
Chassis Ground Terminals C-16, B-33 and C-38, C-40 through C-45, C-47
!
To reduce the susceptibility to noise, power analog modules and digital modules from separate power supplies. Do not exceed a length of 3m (9.8ft) for dc power cabling.
Total current draw through the terminal base unit is limited to 10A. Separate power connections to the terminal base unit may be necessary.
ATTENTION
Connections for 1794-TB3G, -TB3GK and -TB3GS (TB3G shown)
ZZ
AA
BB ZZ
NC
NC
Chassis
Gnd
Chassis
Gnd
Chassis
Gnd
Chassis
Gnd
Output 0
(O0)
Output 1
(O1)
Output 0
(O2)
Output 1
(O3)
(this isolated power is
externally supplied for
outputs with a 1A max.)
NC = No connect
1794-VHSC