Rockwell Automation 1791-32AO User Manual

32 Input AC Block I/O Module

4.35

Cat. No. 1791-32A0 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 to flow through the block module. Refer to Figure 1.

Figure 1 Mounting Cat. No. 1791–32A0 (PLC version shown)

Dimensions for the Block I/O Module

0.5

(12.7)

6.95

6.60

(176.5)

(167.6)

30

Equipment

Grounding Stud

CAUTION:

When tightening grounding

stud nut, do not exceed 15 in-lbs.

(110.5)

3.35

Inches

(Millimeters)

(85.1)

1791-32A0

120V

1

00 01 02 03 04 05 06

07

00 01 02 03 04 05 06

07

ac INPUT

G

COMM

STATUS

00 01 02 03 04 05 06

07

(G+1)

RACK

#

ALLENĆBRADLEY

10 11 12 13 14 15 16

17

IN

G

G+1

10

00

10

11

01

11

12

02

12

13

03

13

14

04

14

15

05

15

16

06

16

17

07

17

10 11 12 13 14 15 16

17

30

Block

2.0 (50.8) air gap on all 4 sides.

Operating temperature in air gap below module must not exceed 60oC

o

(140

1

F).

2

mounting holes

for #8 screws

Dimensions

6.95H x 4.35W x 3.85D (176.5H x 1

10.5W x 98D)

1

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

Figure 2 Mounting

on a DIN Rail

DIN Rail

A-B Pt. No. 199-DR1

46277-3

EN 50022

(35 x 7.5mm)

1. Hook

top of slot over DIN rail.

2. While pressing block against rail, pull down on locking levers.

3.

When block is flush against rail, push up on locking levers to secure block to rail.

Locking levers

Figure 3 Inserting

2

Labels

A

set of die-cut labels is supplied with your module. Select the proper module designation labels (PLC or SLC) for the front door and terminal strips.

1.

Remove labels from package. Select correct labels for your application. (PLC label is numbered 00–07 and 10–17. SLC is numbered 00–07 and 08–15.)

Remove plastic cover on terminal strip

2

2. by flexing in middle. Slip the terminal designation label with power and RIO designations into built-in holders in left terminal strip cover to install. Repeat for the other terminal strip using the remaining label.

3.

Open clear front door designation label into slots in door

. Flex cover slightly

. Insert module

.

3

T

PL

able

A

Acceptable Wiring Cables for Block I/O Connection

Use Cable Type

Remote I/O link Belden 9463

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

Input and output wiring

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

Connect wiring as shown in Figure 4 or Figure 5.

Figure 4 Wiring

Connections with PLC Family Programmable Controllers (refer

to T

able B)

C

1

L1

2

GND

N

NOT

USED

RIO

L2/N

L1

NOT

USED

BLU

SHD

CLR

COM

2

1

COM

2

COM

1

COM

2

COM

1

in 10

00

in

in 1

1

in 01

in 12

in 02

in 13

in 03

in 14

in 04

in 15

in 05

in 16

in 06

29

in 17

30 1

in 07

30

L2/N

USED NOT

USED NO

CONN NO

CONN

3

COM

in 00 in 01 in 02 in 03 in 04 in 05 in 06

in 07 1

30

NO CONN

NOT

NO CONN

NOT

USED NO

CONN

COM

4

COM

4

3

COM

4

3

in 10 in 1

1

in 12 in 13

in 14 in 15 in 16

2

in 17

L2/N

L1

L2/NL1

29

COM COM

L2/N

L1

NOTE:

COM

1 connections are internally connected together COM 2 connections are internally connected together COM 3 connections are internally connected together COM 4 connections are internally connected together

. . . .

3

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

Figure 5 Wiring

Connections with SLC Family Processors (refer to Table B)

SLC

L2/N

L1

RIO

2

30

GND

NOT

USED

BLU CLR

COM

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

1

L1

N

NOT

USED

SHD

COM

2

COM

1

2

COM

1

2

1

in 08

00

in 09 in 10

in 1

1 in 12 in 13 in 14

29

in 15

L2/N

L1

L2/N

L1

30

NOTE: COM

1 connections are internally connected together COM 2 connections are internally connected together COM 3 connections are internally connected together COM 4 connections are internally connected together

29

1

USED NO

CONN

NO CONN

COM COM

COM

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

NOT

USED NOT

3 3 3

00

1

30

NO CONN

NOT

USED NO

CONN

COM

4

COM COM

4 4

L2/N

in 08 in 09

in 10 in 1

1

in 12

L1

in 13 in 14

2

in 15

. . . .

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 “Industrial Automation Wiring and Grounding Guidelines” (1770-4.1) for further information.

4

T

Power

Remote I/O

Input

able B

Wiring

Block Designations

Connections

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

1791–32A0 Series B Connector/Terminal

Designation Description Left Conn. Right Conn.

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

in 00 thru in 07 Input 00 thru 07

COM 1 L2/N Input Common 10, 12, 14

6

(G)

COM 2 L2/N Input Common 9, 11, 13

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

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

in 00 thru in 07 Input 00 thru 07

Input

7

(G+1)

1

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

2

Left connector terminals 10, 12 and 14 are internally connected together

3

Left connector terminals 9, 1

4

Right connector terminals 21, 19 and 17 are internally connected together

5

Right connector terminals 22, 20 and 18 are internally connected together

6

IN (G) = input module group (1 word).

7

IN (G+1) = input module group plus 1 word

COM 3 L2/N Input Common 21, 19, 17 COM 4 L2/N Input Common 22, 20, 18

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

Not used

No Conn

1 and 13 are internally connected together

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

For internal test only; not for customer use.

No internal connection;

customer can use.

.

1

16, 18, 20, 22, 24, 26,

28, 30

2

3

15, 17, 19, 21, 23, 25,

27, 29

15, 13, 11,

9, 7, 5, 3, 1

4 5

16, 14, 12,

10, 8, 6, 4, 2

4, 5 29, 27, 26

30, 28, 25,

24, 23

5

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

Figure 6 Switch

Settings

1

Default Switch

30

Settings = 0

SW2–8

Not used

SW2–7

87654321

Not Used

SW2

30

1

Open cover to access switches

SW1

Position = 1Position = 0

End View

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.

01

SW2–6

Last I/O Group

(PLC-2 only)

0 Not last rack 1 Last rack

SW2–5

Processor

Restart/Lockout (PRL)

0 Processor Restart

87654321

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

6

Installation Instructions

Ra

Block I/O Cat. No. 1791-32A0 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. 1791-32A0 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. 1791-32A0 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.

Important: 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

10835–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. 1791-32A0 Series B

Indicators

PLC SLC

ININ

COMM

STATUS

Indicator Description

COMM OFF

STATUS OFF

COMM is communicating with the block.

ON Flashing

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

G G+1

10

00

11

01

12

02

13

03

14

04

15

05

16

06

17

07

10

00

11

01

12

02

13

03

14

04

15

05

16

06

17

07

COMM

STATUS

00 01 02 03 04 05 06 07

Communication not established Communication established Processor in Program mode

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

AIL – communication cable disconnected, 100ms between valid frames, no more than 255 valid frames between valid frames addressed to block, 20ms idle time exceeded.

ININ

G G+1

00

08

01

09

02

10

03

11

04

12

05

13

06

14

07

15

08 09 10 11 12 13 14 15

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. 1791-32A0 Series B

1791-32A0 Specifications

Input Specifications

Inputs per Block 32 (4 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

Maximum Off-state Current Minimum 2.3mA (60Hz) Input Impedance Maximum 15K ohms @ 60Hz Input Signal Delay Off to on

On to off

Specifications continued on next page

5mA @ 79V, 60Hz

12.3mA @ 132V, 60Hz

1.0ms 26ms (maximum) (allows for 1/2 cycle dropout)

11

Installation Instructions

Block I/O Cat. No. 1791-32A0 Series B

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 13.62 Watts Thermal Dissipation Maximum 46.44 BTU/hr Environmental Conditions

Operational Temperature

Storage Temperature

Relative Humidity Conductors Wire Size

Rockwell Automation 1791-32AO User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Installation

Termination Resistor

Indicators

Fusing

1791-32A0 Specifications

General Specifications