Rockwell Automation 1791D-N4CV2X User Manual

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Installation Instructions

Compact

Block

I/O Analog Combination

Input/Output Expansion Module

(Cat. No. 1791D-N4CV2X)

1791D CompactBlock™ I/O input/output expansion module is a combination 4 channel input and 2 channel output module. This combination module serves as an analog expansion I/O for 1791D (DeviceNet), 1791P (PROFIBUS DP), and 1791R (RIO) CompactBlock I/O.

CompactBlock I/O modules must be installed in a secondary enclosure.

Important User Information

Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Rockwell Automation office), describes some important differences between

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2 CompactBlock I/O Analog Combination Input/Output Expansion Module

WARNING

ATTENTION

IMPORTANT

solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize

the consequences of a potential hazard:

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

Identifies information about practices or circumstances that can lead to personal injury or death, property damage or economic loss.

Identifies information that is critical for successful application and understanding of the product.

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CompactBlock I/O Analog Combination Input/Output Expansion Module 3

ATTENTION

Environment and Enclosure

This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters without derating.

This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.

This equipment is supplied as "enclosed" equipment. It should not require additional system enclosure when used in locations consistent with the enclosure type ratings stated in the Specifications section of this publication. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings, beyond what this product provides, that are required to comply with certain product safety certifications.

See NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure. Also, see the appropriate sections in this publication, as well as the Allen-Bradley publication 1770-4.1 ("Industrial Automation Wiring and Grounding Guidelines"), for additional installation requirements pertaining to this equipment.

Installing CompactBlock I/O

Follow these steps to install the 1791D I/O analog expansion module:

1. Mount the module.

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4 CompactBlock I/O Analog Combination Input/Output Expansion Module

ATTENTION

2. Connect the input/output wires.

3. Remove the terminal block.

4. Insert the terminal block.

5. Communicate with the CompactBlock base module.

These steps are explained in detail in the following procedures.

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component

boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

• When not in use, store the equipment in

appropriate static-safe packaging.

Mount the Module

The base and expansion modules mount to a panel or DIN rail, which must be grounded before installing the module(s). For instructions on how to mount a base module, refer to the installation instructions for the specified module (1791D, 1791P, or 1791R).

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CompactBlock I/O Analog Combination Input/Output Expansion Module 5

WARNING

Base Module

141 mm

5.55 in

41 mm

1.6 in

41673

Module Mounting

You can install the CompactBlock module on a panel or DIN rail.

When used in a Class I, Division 2, hazardous location, this equipment must be mounted in a suitable enclosure with proper wiring method that complies with the governing electrical codes.

Panel Mounting

1. Place the module against the panel where you want to mount it.

2. Drill holes in the panel that are aligned with mounting holes on the

module.

3. Place screws through each of the 2 mounting holes and tighten the screws until the module is firmly in place.

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ATTENTION

IMPORTANT

Locking Lever

90358

DIN Rail Mounting

1. Hook top of slot over the DIN Rail.

2. Pull down on the locking lever while pressing the block against the

rail.

3. Push up on the locking lever to secure the block to the rail when block is flush against the rail.

Connecting an Expansion Module to a Base Module

Expansion blocks should not be installed when power

is applied to the base.

Make sure you carefully read the section “Word/Bit

Definitions” on page

data sizes.

NOTE: 1791D-4B0 cannot be connected to expansion modules.

1. Remove the expansion covers from both the base and expansion

modules.

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11 to change produce and consume

CompactBlock I/O Analog Combination Input/Output Expansion Module 7

IMPORTANT

Base Module Expansion Module

141 mm

5.55 in

41 mm

1.6 in

104 mm

4.09 in

41 mm

1.6 in

25 mm

1 in

Expansion

30358

Red strip must be on top of ribbon

30360

2. Position the expansion block with the proper spacing. See the illustration below.

3. Mount expansion module using panel or DIN rail mounting, as described in the previous section.

4. Plug the expansion cable into both the base and expansion modules.

The expansion cable can only be connected to the modules such that the red stripe on the cable is on top as shown below.

5. Replace the expansion covers on both modules.

For instructions on how to wire individual base modules, refer to the installation instructions for the specified module (1791D, 1791P, or 1791R).

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8 CompactBlock I/O Analog Combination Input/Output Expansion Module

WARNING

GND

V in 0+

V/I in 0-

I in 2+

V in 2+

V in 1+

V/I in 1-

I in 0+

I in 1+

V in 3+

ANLG COM

I in 3+

V out 0+

I out 0+

ANAL COM

I out 1+

V out 1+

V/I in 2-

V/I in 3-

Load

Not Used

43402

a. Remove a length of

cable jacket from the connecting cable.

b. Pull the foil shield and

bare drain wire from the insulated wire.

c. Twist the foil shield and

drain wire together to form a single strand.

d. Attach a ground lug

and apply heat shrink tubing to the exit area.

20104-M

Connect the Input/Output Wires to the Block

A VDC+ and GND power pin is located on the analog expansion module. The following figure shows the wiring information for the analog expansion

module. Use shielded wire for your application.

Use supply wires suitable for 30°C above surrounding ambient.

Wiring Diagram for 1791D-N4CV2X Module

Connect grounded end of the cable

Ground one end of the cable only. Follow the steps below.

1. Prepare one end of the cable for grounding.

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CompactBlock I/O Analog Combination Input/Output Expansion Module 9

Field Device

Drain wire

43513

a. Remove a length

of cable jacket from the connecting cable.

b. Pull the foil shield

and bare drain wire from the insulated wire.

c. Cut the foil shield and drain

wire back to the cable casing and apply shrink wrap, exposing only the insulated wires.

43182

2. Ground the drain wire. We recommend grounding the drain wire at the field device as shown below.

3. Connect the insulated wires to the field device.

If you cannot ground at the field device, follow these steps:

1. Prepare one end of the cable as shown in step 1.

2. Ground at an earth ground.

3. Connect the insulated wires to the Removable Terminal Block.

Connect ungrounded end of the cable

1. Prepare the non-grounded end of the cable.

2. Connect the insulated wires to:

• the RTB (as shown below) if the cable is grounded at the field device

• the field device if the cable is grounded at the product end.

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10 CompactBlock I/O Analog Combination Input/Output Expansion Module

WARNING

VDC

V/I in

GND

V/I in

Not

Used

V in 0+

V/I in

I in 0+

V in 2+

V in 3+

I in 1+

V/I in

V in

I in

ANLG

COM

V out

I out

V out 1+

ANLG COM

I in

Retaining Screw

43401

Remove the Terminal Block

The CompactBlock I/O analog combination expansion module has a removable terminal block. Follow the directions below to remove the

CompactBlock terminal block.

When you connect or disconnect the Removable Terminal Block (RTB) with field side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

1. Unscrew the two retaining screws on the side of the terminal block.

2. Lift the terminal block out of the base.

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CompactBlock I/O Analog Combination Input/Output Expansion Module 11

IMPORTANT

Insert the Terminal Block

To insert the CompactBlock terminal block.

1. Insert the terminal block by aligning it and pushing it back until it

rests against the back of the module.

2. Tighten the screws on each side of the terminal block until the

terminal block is firmly in place.

When installing an expansion module, refer to the table below to see how many bytes are produced and consumed by the modules.

Word/Bit Definitions

The following table lists the combination of input and output modules and the input and output bytes produced and consumed with the analog expansion module.

DeviceNet Network

Base I/O Points Prod.

16 input

input

digital 4 in/ 2 out analog

16 output

output

digital 4 in / 2 out analog

8 in /

8 in/ 8 out

8 out

4 in / 2 out analog

4 in /

4 in/ 4 out

4 out

4 in / 2 out analog

(input bytes)

14 4 12 4 12 12

12 6 10 6 12 12

12 6 12 6 12 12

Cons. (output bytes)

PROFIBUS Network

Prod. (input bytes)

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Remote I/O Network

Cons. (output bytes)

1791D-IN002A-EN-P - June 2003

Prod. (input bytes)

Cons. (output bytes)

12 CompactBlock I/O Analog Combination Input/Output Expansion Module

The DeviceNet Network uses advanced network technology, producer/consumer communication, to increase network functionality and throughput. Visit our web site at http://www.ab.com/networks for producer/consumer technology information and updates.

Troubleshooting

Refer to the following LED indicators to troubleshoot the module.

Expansion Status Indicator LED Indicator: Status:

Solid Green/On • Passed internal diagnostics

• Communication over bus

• Analog converter and MPU operating properly

Flashing Red Recoverable fault (no communication) Solid Red Unrecoverable fault (Hardware error) Off None of the above conditions is true

Expansion Power Indicator LED Indicator: Status:

Solid Green Module powered Off Module not powered

Input Channel Status Indicator LED Indicator: Status:

Solid Green/On Input channel operating properly Flashing Red Input channel overrange or open wire @ 4-20mA current mode Off Neither of the above conditions is true

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CompactBlock I/O Analog Combination Input/Output Expansion Module 13

Output Channel Status Indicator LED Indicator: Status:

Solid Green/On Output channel operating properly Flashing Green Output disabled (Output enable bit is 0) Flashing Red Output channel over data range or under data range @ 4-20mA current mode Off Neither of the above conditions is true

Specifications

Input Specifications

Input Channels 4 differential or single ended (individually configured

Current Voltage

A/D Conversion Time per Channel 100ms @ 60 Hz Filter Common Mode Voltage Range 1 volt Common Mode Rejection >55 dB @ 50 & 60Hz @ 1V between inputs and

Input Impedance

Voltage Terminal Current Terminal

Overall Accuracy

Voltage Accuracy

Current Accuracy Non-linearity (in % Full Scale) +0.4% Repeatability (in % Full Scale) +0.4% Resolution 12 bit Conversion Type Delta-Sigma Field Input Calibration None (Production)

by wire for current or voltage) Operating Range Full Range

0-20mA 0-21mA 4-20mA 3.2-21mA 0-10V dc 0-10.5V dc

analog com

200K ohms (typical) 249 ohms (nominal)

+0.25% of Full Scale +0.25% of Full Scale

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14 CompactBlock I/O Analog Combination Input/Output Expansion Module

Input Specifications (continued)

Maximum Overload @ Input Terminals

Current Terminal

Voltage Input

Output Specifications

Output Channels 2 single ended (individually configured by wire for

Current Voltage

Response Speed per Channel 2.5ms Current Load on Voltage Output 10mA max Resistive Load on Current Output 0 to 500 ohms (includes wire resistance) Load Range (resistive) on Voltage

Output Max. Inductive Load

(Current Outputs) Max. Capacitive Load

(Voltage Outputs) Overall Accuracy

Voltage Terminal

Current Terminal Non-linearity (in % Full Scale) +0.5% Repeatability +0.1% Output Offset Error Lets required accuracy over full temp range specified Short Circuit Protection of

Voltage Out Short Circuit Protection of

Current Out Resolution 12 bit Safe States • Hold Last State

32mA 20V

current or voltage) Operating Range Full Range

0-20mA 0-21mA 4-20mA 3.2-21mA

0-10V dc 0-10.5V dc

1K Ohm and greater at 10V

0.1 mH or better

1 uF or better

+0.2% of Full Scale +0.2% of Full Scale

21 mA max

15V max

• Off

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CompactBlock I/O Analog Combination Input/Output Expansion Module 15

Output Specifications (continued)

Robustness • Voltage output overload, including short

circuit without damage

• Current output overload, including open circuit without damage

General Specifications

Indicators Exp. status - green/red

Isolation 500V ac/60s Auxiliary Power

Voltage Current

Expansion Power Voltage Current

Expansion Module Dimensions 115mm X 50mm X 38mm

Field Wiring Tightening Torque 5-7lb-in. (0.5-0.6 Nm) Operating Temperature

Storage Temperature IEC 60068-2-1 (Test Ab, Un-packaged Non-operating

Relative Humidity IEC 60068-2-30 (Test Db, Un-packaged Non-operating

Exp Powered status - green Input status - green/red Output status - green/red

21.6 -26.4V dc 100mA

5V dc 100mA

4.4in X 1.97in X 1.5in

IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0 to 60°C (32 to 140°F)

Cold), IEC 60068-2-2 (Test Bb, Un-packaged Non-operating Dry Heat), IEC 60068-2-14 (Test Na, Un-packaged Non-operating Thermal Shock):

-40 to 85°C (-40 to 185°F)

Damp Heat): 5-95% non-condensing

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16 CompactBlock I/O Analog Combination Input/Output Expansion Module

General Specifications (continued)

Operating Shock IEC60068-2-27 (Test Ea, Unpackaged shock):

Operating 30g Non-operating 50g

Vibration IEC60068-2-6 (Test Fc, Operating):

Conductors Wire Size

North American Hazardous Location Approval

The following information applies when operating this equipment in hazardous locations:

Products marked “CL I, DIV 2, GP A, B, C, D” a re suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the ra ting nameplate indicating the hazardous locati on temperature code. When combining products within a system, the most adverse temperature code (lowest “T” number) m ay be used to help determine the overall t emperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation.

EXPLOSION HAZARD

• Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

• Do not disconnect connections to this equipment unless power has been removed or the area is known to be nonhazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.

• Substitution of components may impair suitability for Class I, Division 2.

• If this product contains batteries, they must only be changed in an area known to be nonhazardous.

Informations sur l’utilisation de cet équipement en environnements dangereux :

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent qu’à une utilisation en environnements de Classe I Division 2 Groupes A, B, C, D dangereux e t non dangereux. Chaque produit est livré ave c des marquages sur sa plaque d’identification qui indiquent le code de température pour les environnements dang ereux. Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable ( code de température le plus faible) peut être utilisé pour déter miner le code de température global du système. Les combinaisons d’équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au moment de l’installation.

RISQUE D’EXPLOSION

• Couper le courant ou s’assurer que l’environnement est classé non dangereux avant de débrancher l'équipement.

• Couper le courant ou s'assurer que l’environnement est classé non dangereux avant de débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.

• La substitution de composants peut rendre cet équipement inadapté à une utilisation en environnement de Classe I, Division 2.

• S’assure r que l’environnement est classé non dangereux avant de changer les piles.

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CompactBlock I/O Analog Combination Input/Output Expansion Module 19

This product has been tested at an Open DeviceNet Vendor Association, Inc. (ODVA) authorized independent test laboratory and found to comply with ODVA Conformance Test. Please contact the ODVA website (http://www.odva.org) for listing of products tested by ODVA independent test labs for further details.

CompactBlock and DeviceNetManager are trademarks of Rockwell Automation, Inc. DeviceNet is a trademark of Open DeviceNet Vendor Association.

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Rockwell Automation Support

Rockwell Automation provides technical information on the web to assist you in using our products. At http://support.rockwellautomation.com, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.

For an additional level of technical phone support for installation, configuration and troubleshooting, we offer TechConnect Support programs. For more information, contact your local distributor or Rockwell Automation representative, or visit http://support.rockwellautomation.com.

Installation Assistance

If you experience a problem with a hardware module within the first 24 hours of installation, please review the information that's contained in this manual. You can also contact a special Customer Support number for initial help in getting your module up and running:

United States 1.440.646.3223 Monday – Friday, 8am – 5pm EST Outside United States Please contact your local Rockwell Automation representative for any

New Product Satisfaction Return

Rockwell tests all of our products to ensure that they are fully operational when shipped from the manufacturing facility. However, if your product is not functioning and needs to be returned:

United States Contact your distributor. You must provide a Customer Support case number

Outside United States Please contact your local Rockwell Automation representative for return

technical support issues.

(see phone number above to obtain one) to your distributor in order to complete the return process.

procedure.

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Rockwell Automation 1791D-N4CV2X User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important User Information

Installing CompactBlock I/O

Mount the Module

Connect the Input/Output Wires to the Block

Remove the Terminal Block

Insert the Terminal Block

Troubleshooting

Specifications

North American Hazardous Location Approval