Rockwell-automation 1794-OF4I FLEX I/O Isolated Analog Output Module I Manuale Utente Scaricare il pdf (Pagina 3)

FLEX™ I/O Isolated Output Analog Module 3

Publication 1794-IN037E-EN-P - November 2011

Connect Wiring for the 1794-TBN

1. Connect individual output wiring to the even-numbered terminals on row

B for each output as indicated in the following table. Use Belden 8761

cable for signal wiring.

2. Connect the associated common/return to the corresponding

odd-numbered terminal on row C for each output as indicated in the

WiringConnections for the 1794-OF4I Output Module table.

3. Connect the +V DC power to terminal 34 on the 34…51 row (C) and -V

common/return to terminal 16 on the 16…33 row (B).

4. If daisychaining +V power to the next terminal base, connect a jumper

from terminal 51 (+V DC) on this base unit to terminal 34 on the next

base unit.

5. If continuing DC common (-V) to the next base unit, connect a jumper

from terminal 33 (common) on this base unit to terminal 16 on the next

base unit.

6. Connect the shield to functional earth ground as near as possible to the

module.

1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T and 1794-TB3TS Terminal Base

Wiring

1794-TBN Terminal Base Wiring

ATTENTION

Connect only one current or one voltage signal per channel. Do not

connect both current and voltage on one channel.

ATTENTION

To reduce susceptibility to noise, power analog modules and digital

modules from separate power supplies.

Wiring Connections for the 1794-OF4I Output Module

Channel Signal Type Label

Markings

1794-TB2, 1794-TB3, 1794-TB3S,

1794-TB3T, 1794-TB3TS

1794-TBN

Terminal Shield (1794-TB3T,

1794-TB3TS)

Terminal

0 Current I0 A-0 C-39 B-0

Current I0 ret A-1 C-1

Voltage V0 A-2 C-40 B-2

Voltage V0 ret A-3 C-3

1 Current I1 A-4 C-41 B-4

Current I1 ret A-5 C-5

Voltage V1 A-6 C-42 B-6

Voltage V1 ret A-7 C-7

2 Current I2 A-8 C-43 B-8

Current I2 ret A-9 C-9

Voltage V2 A-10 C-44 B-10

Voltage V2 ret A-11 C-11

3 Current I3 A-12 C-45 B-12

Current I3 ret A-13 C-13

Voltage V3 A-14 C-46 B-14

Voltage V3 ret A-15 C-15

-V DC common 1794-TB2, 1794-TB3, 1794-TB3S: Terminals B-16…B-33 are internally connected in the

terminal base unit.



1794-TBN: Terminals B-16 and B-33 are internally connected in the terminal base unit.

1794-TB3T, 1794-TB3TS: Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are internally

connected in the terminal base unit.

+V DC power 1794-TB3, 1794-TB3S: Terminals 34…51 are internally connected in the terminal base unit.

1794-TB3T, 1794-TB3TS: Terminals 34, 35, 50 and 51 are internally connected in the terminal

base unit.



1794-TB2, 1794-TBN: Terminals 34 and 51 are internally connected in the terminal base unit.

Chassis ground

(shield)

1794-TB3T, 1794-TB3TS: Terminals 39…46 are internally connected to chassis ground.

ATTENTION

Do not remove or replace a Terminal Base unit while power is applied.

Interruption of the backplane can result in unintentional operation or

machine motion.

Input Map

Dec 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Oct 17 16 15 14 13 12 11 10 7 6 5 4 3 2 1 0

Word 0 Read back channel 0

Word 1 Read back channel 1

Word 2 Read back channel 2

Word 3 Read back channel 3

Word 4 PU FP CF 0 Reserved 0 0 0 0 0 BD DN 0

Word 5 0 0 0 0 P3 P2 P1 P0 0 0 0 0 W3 W2 W1 W0

Where: PU = Power up inconfigured

FP = Field power off

CF = In configuration mode

BD = Bad calibration

DN = Calibration accepted

P0…P3 = Output holding in response to Q0…Q3

W0…W3 = Wire off current loop status for channels 0…3 respectively

234567890

29 30

16 17 18 19

44 45

47 48

36 37

13 14

45750

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

I RVRIRVRIRVRIRVR

0...15

16...33

34...51

Current

output

device

Current

output

device

Current

output

device

Voltage

output

device

AC or DC

4-wire output

device

DC only

3-wire output

device

Current only

2-wire output

device

DC only

3-wire output

device

45749

Even-numbered terminals 0...1416 33

34 51

Row B

Row C

Odd-numbered

terminals 1...15

DC only

3-wire output

device

Current only

2-wire output

device

DC only

AC or DC

4-wire output

device

Current

output

device

Current

output

device

Current

output

device

Voltage

output

device

1 2 3 4 5

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