Rockwell Automation 1794-ID2 U.MNL INCREMENTAL ENCODER - Manual (Page 31)

2–9 How to Install Your Incremental Encoder Module
Publication 1794ĆUM015B-EN-P - May 2001
Wiring to the module is made through the terminal base unit on
which the module mounts.
Compatible terminal base units are:
Module 1794ĆTB3 1794ĆTB3S 1794ĆTBN 1794ĆTBNF
1794-ID2 Yes Yes Yes Yes
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
C
A
B
C
1794ĆTB3 1794ĆTB3S
35 and 51 = common
0 -15
34-51
16-33
34 and 50 = 24V dc
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
16 and 33 = chassis ground
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
18 19 20 21 22 23 33 24 25 26 27 28 29 30 31 32 17
35 36 37 38 47 48 49 50 34 51
16
Label placed at top of wiring area.
39 40 41 42 43 44 45 46
40 thru 45 = chassis ground
35 and 51 = common
34 and 50 = 24V dc
16 and 33 = chassis ground
40 thru 45 = chassis ground
Connecting Wiring using a 1794ĆTB3 and ĆTB3S TerminalBase
Units
1. Connect individual input wiring (A+, A–, B+, B–, Z+, Z–, G+,
G–) to numbered terminals on the 0–15 row (A) as indicated in
the table below.
!
ATTENTION: Do not connect maximum input
voltage simultaneously to all inputs if the module
ambient temperature is expected to exceed 40
o C.
!
ATTENTION: If the module ambient temperature is
expected to continuously exceed 40
o C, you must limit
the input voltage using an external resistor on each
input. A 1K
Ω
resistor effectively limits a 24V sensor
signal to about 15V at the input. Do not limit the input
to less than 6V.
2. Connect the associated input common (3-wire devices only) to
the corresponding terminal on the 16-33 row (B) for each input as
indicated in the table below. (Commons are internally connected
together.)
Connecting Wiring for
Your incrementalencoder
Module