Rockwell Automation 1791-16A0 User Manual

16 Input AC Block I/O Module

Cat. No. 1791-16A0 Series B

Installation

Mount the block I/O module in a vertical (recommended) or horizontal position.
Allow sufficient room around the block for cooling air flow through the block
module. Refer to Figure 1.

Figure 1
Mounting
Cat. No. 1791–16A0 Series B (PLC version shown)

Dimensions for the Block I/O Module

2.710
(68.8)

1.71

(43.4)

1791-16A0

120V

1

00
01
02
03
04
05
06

07

INPUT INPUT

00
01
02
03
04
05
06

07

ac INPUT

(12.7)

6.95

(176.5)

0.5

6.60

(167.6)

Inches

(Millimeters)
Dimensions

6.95H x 2.710W x 3.85D
(176.5H x 68.8W x 98D)

10
11
12
13
14
15
16

17

Block

Equipment

Grounding Stud

30

CAUTION:

10
11
12
13
14
15
16

17

2.0 (50.8) air gap
on all 4 sides.

Operating temperature in air
gap below module must not

ALLENĆBRADLEY

exceed 60oC (140oF).

2

mounting holes

for #8 screws

When tightening grounding stud nut, do not exceed 15 in-lbs.

12381–I

1

Installation Instructions

Block I/O
Cat. No. 1791-16A0 Series B

Figure 2
Mounting

1.

2. While pressing block against rail,

3. When block is flush against rail,

on a DIN Rail

Block

Hook top of slot over DIN rail.

pull down on locking lever

push up on locking lever to secure
block to rail.

.

Figure 3
Inserting

Labels

DIN Rail

A-B Pt. No. 199-DR1

46277-3

EN 50022

(35 x 7.5mm)

Locking Lever

12382–I

A set of labels is supplied with your module. Select the
proper module designation labels (PLC or SLC) for the front
door and terminal strip.

1.

Remove die-cut labels from package. Select correct

labels for your application. (PLC label is numbered

2

00–07 and 10–17. SLC label is numbered 00–07
and 08–15.)

2.

Remove plastic cover on terminal strip by flexing
in middle. Slip the terminal designation label into
built-in holders in terminal strip cover
slightly to install.

3. Open clear front door
label into slots that secure it to the door

. Insert module designation

. Flex cover

3

.

12384–I

2

Installation Instructions

Block I/O
Cat. No. 1791-16A0 Series B

Connect wiring as shown in Figure 4 or Figure 5.

Figure 4
Wiring

Connections with PLC Family Programmable Controllers (refer

to T

able

A)

PLC

RIO

L2/N

L1

GND

NOT

USED

BLU
CLR

COM

1

COM

1

COM

00

in
in 01
in 02
in 03
in 04
in 05
in 06
in 07

30

1

L1

N

NOT

USED

SHD

COM

2

COM

2

COM

2

1

in 10

in 1

1

in 12

in 13
in 14
in 15
in 16
in 17

L1

NOTE: COM 1 connections are internally connected together.

COM 2 connections are internally connected together.

L2/N

L2/N

L1

12386–I

3

Installation Instructions

Block I/O
Cat. No. 1791-16A0 Series B

Figure 5
Wiring

Connections with SLC Family Processors (refer to T

able

A)

SLC

RIO

L2/N

L1

GND

NOT

USED

BLU
CLR

COM

1

COM

1

COM

00

in
in 01
in 02
in 03
in 04
in 05
in 06
in 07

30

1

L1

N

NOT

USED

SHD

COM

2

COM

2

COM

2

1

in 08

in 09
in 10

in 1

1
in 12
in 13
in 14
in 15

L1

L2/N

L2/N

L1

NOTE: COM 1 connections are internally connected together.

COM 2 connections are internally connected together.

12389–I

The block I/O module has an equipment grounding stud on the lower left side of
the module. Connect this grounding stud to your equipment ground. Torque the
nut to 15 in-lbs maximum when connecting to your equipment ground.

ATTENTION: Do not overtighten the nut on the grounding stud

when connecting the wire. Damage to the module could result.

Refer to “Programmable Controller Wiring and Grounding Guidelines”
(1770-4.1) for further information.

4