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

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

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

T

s

Power

Remote I/O

able

A

Block Designations

Wiring

Connection

Installation Instructions

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

1791–16A0 Series B

Designation Description Terminal No.

Power

Connections

L1 ac hot 1

N

ac neutral 3

GND Chassis ground 2

Remote I/O

Connections

BLU Blue wire – RIO 6 CLR

Clear wire – RIO 8

SHD Shield – RIO 7

I/O Connections

Input in 00 thru in 07 Input 00 thru 07

COM 1 L2/N Input Common 10, 12, 14 COM 2 L2/N Input Common 9, 11, 13

Input

PLC: in 10 thru in 17 SLC: in 08 thru in 15

Not used

1

Connect chassis ground to equipment grounding stud. These are not internally connected.

2

T

erminals 10, 12 and 14 are internally connected.

3

T

erminals 9, 11 and 13 are internally connected.

T

able B

PLC: Input 10 thru Input 17 SLC: Input 08 thru Input 15

For internal test only; not for

customer use.

Acceptable Wiring Cables for Block I/O Connection

1

16, 18, 20, 22,

24, 26, 28, 30

2

3

15, 17, 19, 21,

23, 25, 27, 29

4, 5

Use Cable Type

Remote I/O link Belden 9463

Input and output wiring

Up to 14AWG (2mm2) stranded with 3/64 inch (1.2mm) insulation

5

Installation Instructions

Not use

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

Figure 6 Switch

Settings

1791-16A0

120V

1

ac INPUT

Default Switch

Settings = 0

87654321

SW2–8

d

SW2–7

Not used

INPUT INPUT

00 01 02 03 04 05 06

07

10 11 12

SW2

13 14 15 16 17

01

SW1

30

01

Open cover to access switches

Position = 1Position = 0

End View of Switch

ATTENTION: Cycle power to the module after

setting the switches.

Only block I/O modules with all inputs or all outputs can use complementary I/O.

NOTE: Set switch SW2–3 to 0 if this rack will have a

unique address (not complemented). If this rack address is a duplicate of another I/O block or chassis, set the switch to 1 for primary or 0 for complementary. Refer to Table C for the complementary I/O rack address.

Series A block I/O modules do not support complementary I/O. If using series A modules, set switch SW2–3 to 0.

6

SW2–6 Last I/O Group

0 Not last rack 1 Last rack

SW2–5

87654321

0 Processor Restart

Processor

Restart/Lockout (PRL)

1 Processor Lockout

SW2–4 Hold Last State

0 Reset Outputs 1 Hold Last State

SW2–3 Complementary I/O

0 Non-Complemented System 0 Complementary Rack

1 Primary Rack

1

See note.

Communication Rate

SW2–2 SW2–1 Bits/s

0 0 57.6 K 0 1 115.2 K 1 0 230.4 K 1 1 230.4 K

Starting Quarter

SW1–2 SW1–1

0 0 0 (1st) 0 1 2 (2nd) 1 0 4 (3rd) 1 1 6 (4th)

1

Module

Group

12391–I

Installation Instructions

Ra

Block I/O

Cat. No. 1791-16A0 Series B

1747-SN Number

Rack Rack 1 Rack 2 Rack 2 Rack 1 Rack 1 Rack 1 Rack 2 Rack 3 Rack 3 Rack 2 Rack 2 Rack 2 Rack 3 Rack 4 Rack 4 Rack 3 Rack 3 Rack 3

1771-SN

ck

Number

0

Rack 1 Rack 1

Rack 5 Rack 5 Rack 4 Rack 4 Rack 4 Rack 6 Rack 6 Rack 5 Rack 5 Rack 5 Rack 7 Rack 7 Rack 6 Rack 6 Rack 6

PLC–2

ck

Number

PLC–5

ck

PLC–5/250

ck

Number

Not V

alid

Rack 7 Rack 7 Rack 7 Rack 10 Rack 10 Rack 10 Rack 1

1 Rack 12 Rack 12 Rack 12 Rack 13 Rack 13 Rack 13 Rack 14 Rack 14 Rack 14 Rack 15 Rack 15 Rack 15 Rack 16 Rack 16 Rack 16 Rack 17 Rack 17 Rack 17 Rack 20 Rack 20 Rack 20 Rack 21 Rack 21 Rack 21 Rack 22 Rack 22 Rack 22 Rack 23 Rack 23 Rack 23 Rack 24 Rack 24 Rack 24 Rack 25 Rack 25 Rack 25 Rack 26 Rack 26 Rack 26 Rack 27 Rack 27 Rack 27

PLC–3

ck

Number

Rack 0 Rack 0

Rack 1

Rack 30 Rack 30 Rack 31 Rack 31 Rack 32 Rack 32 Rack 33 Rack 33 Rack 34 Rack 34 Rack 35 Rack 35 Rack 36 Rack 36 Rack 37 Rack 37

Number

1

Rack 1

Rack 40 Rack 41 Rack 42 Rack 43 Rack 44 Rack 45 Rack 46 Rack 47 Rack 50

ck

SW1 Switch Position

8 7 6 5 4 3

0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 1 0 0 0 0 1 1 1 0 0 1 0 0 0

1 0 0 1 0 0 1

0 0 1 0 1 0 0 0 1 0 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 0 0 1 1 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 1 0 1 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 1 0 1 1 1 0 0 0 1 1 1 0 1 0 1 1 1 1 0 0 1 1 1 1 1 1 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 1 0 0 0 1 1 1 0 0 1 0 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 1 1 1 0 1 0 0 0

7

Installation Instructions

Ra

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

Rack

PLC–5/250

1747-SN

Rack

Number

Rack address 77 is an illegal configuration. PLC-5/1 PLC-5/15 and PLC-5/20 processors can scan racks 01–03. PLC-5/25 and PLC-5/30 processors can scan racks 01–07. PLC-5/40 and PLC-5/40L processors can scan racks 01–17. PLC-5/60 and PLC-5/60L processors can scan racks 01–27. PLC-5/250 processors can scan racks 00–37.

1771-SN

Rack

Number

1 processors can scan rack 03.

PLC–2

Rack

Number

PLC–5

Number

Rack

Number

PLC–3

Rack

Number

Rack

51 Rack 52 Rack 53 Rack 54 Rack 55 Rack 56 Rack 57 Rack 60 Rack 61 Rack 62 Rack 63 Rack 64 Rack 65 Rack 66 Rack 67 Rack 70 Rack 71 Rack 72 Rack 73 Rack 74 Rack 75 Rack 76

Not V

alid 1 1 1 1 1 1

SW1 Switch Position

1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 1 1 0 1 1 0 0 1 0 1 1 0 1 1 0 1 1 1 0 1 0 1 1 1 1 1 1 0 0 0 0 1 1 0 0 0 1 1 1 0 0 1 0 1 1 0 0 1 1 1 1 0 1 0 0 1 1 0 1 0 1 1 1 0 1 1 0 1 1 0 1 1 1 1 1 1 0 0 0 1 1 1 0 0 1 1 1 1 0 1 0 1 1 1 0 1 1 1 1 1 1 0 0 1 1 1 1 0 1 1 1 1 1 1 0

345678

T

able C

PLC–2

and PLC–5 With Complementary I/O

PLC–2

Number

Rack Rack 2 Rack 1 Rack 3 Rack 2 Rack 4 Rack 3 Rack 5 Rack 4 Rack 6 Rack 5 Rack 7 Rack 6

ck

PLC–5

ck

Number

1

Not V

alid 0 0 1 0 0 0

Rack 7

SW1 Switch Position

8 7 6 5 4 3

0 0 1 0 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 0 0 1 1 1 1

8

When

configured as complementary I/O,: PLC-2 can scan racks 01–07 PLC-5/1

1 can scan rack 03 PLC-5/20, PLC-5/30, PLC-5/40, PLC-5/60 can scan racks 01–07

NOTE:

Remote rack numbers which can have a complementary rack are rack numbers 01 thru 07 only

.

Installation Instructions

Block I/O

Cat. No. 1791-16A0 Series B

The SLC 500 controllers communicate with the block I/O using an I/O Scanner module (cat. no. 1747-SN series A). Refer to the user manual for the 1747-SN/A Scanner module for more information.

Note: This block I/O module is not compatible with the 1747-DSN Distributed I/O Scanner module.

Termination Resistor

A

termination resistor must be installed on the last block in a series. Connect the

resistor as shown in Figure 7.

Figure 7 Installing

Connect terminals 6 (BLU) and 8 (CLR).

150 ohm – 57.6K and 115.2K baud 82 ohm – 230.4K baud

the T

ermination Resistor

termination resistor across

Termination

Resistor

BLU CLR

SHD

12392–I

ATTENTION: Devices that are operating at 230.4K baud must have

82 ohm terminators in place for proper operation.

9

Installation Instructions

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

Indicators

PLC SLC

INPUT INPUT

00 01 02 03 04 05 06 07

COMM

STATUS

10 11 12 13 14 15 16 17

Indicator Description

COMM OFF

ON Flashing

STATUS OFF

ON Flashing

COMM

and STATUS will alternately flash when processor restart lockout is selected, a fault has occurred and the processor

is communicating with the block.

Communications not established Communication established Processor in Program mode

Normal Error (hardware or software), block power low COMM F

AIL – Communication cable of than 255 valid frames between valid frames addressed to block, 20ms idle time exceeded.

INPUT INPUT

00 01 02 03 04 05 06 07

COMM

STATUS

f, 100ms between valid frames, no more

08 09 10 11 12 13 14 15

12394–I

Fusing

The block I/O module is internally fused to protect the module. No external power fusing is required.

10

Installation Instructions

Block I/O

Cat. No. 1791-16A0 Series B

1791-16A0 Series B Specifications

Input Specifications

Inputs per Block 16 (2 groups of 8) Nominal Input Current 11.0mA Nominal Input Voltage 120V ac On–state Voltage Range 79–132V ac, 47–63Hz Off-state Voltage Maximum 35V On-state Current Minimum 5mA @ 79V, 60Hz Off-state Current Minimum 2.3mA (60Hz) Input Impedance Maximum 15K ohms @ 60Hz Input Signal Delay Off to on

On to off

General Specifications

External Power (Internally protected

- no external fuse required) Voltage Current

Dimensions Inches

Millimeters

Isolation Power supply to RIO

I/O Group-to-Group

I/O Group-to-Logic Power Dissipation Maximum 8.9 Watts Thermal Dissipation Maximum 30.35 BTU/hr Environmental Conditions

Operational Temperature

Storage Temperature

Relative Humidity Conductors Wire Size

Rockwell Automation 1791-16A0 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual