Allen-Bradley FLEX I/O 1794-IP4, Руководство пользователя, Страница: 27 / 70

2–11 How to Install Your Pulse Counter Module
Publication 1794-6.5.16 – September 1998
Wiring to a 1794-TBN or -TBNF Terminal Base Unit
1. Connect individual input wiring (N+, N–,) or (D+, D–) to the
even numbered terminals on row (B) 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 to the corresponding odd
numbered terminal on row (C) for each input as indicated in the
table below.
3. Connect 24V dc to terminal 34 on row (C).
4. Connect 24V dc common to terminal 16 on row (B).
5. If continuing power to the next terminal base unit, connect a
jumper from terminal 51 (24V dc) on this base unit to terminal 34
on the next base unit.
6. If continuing common to the next terminal base unit, connect a
jumper from terminal 33 (24V dc common) on this base unit to
terminal 16 on the next base unit.
0 2 4 6 8 10 12 14 33
16
1 3 5 7 9 11 13 15 51
34
16, 0, 2, 4, 6,
8, 10, 12, 14, 33
34, 1, 3, 5, 7,
9, 11, 13, 15, 51
C
B
1794-TBN, -TBNF
16 33 Even Numbered Terminals 0 thru 14
34 51 Odd Numbered Terminals 1 thru 15
Allen-Bradley HMIs