Rockwell Automation 1771-IFFA User Manual

Download

Fast Analog Input Module

Cat. No. 1771-IFF Series A

Installation Instructions

Use this document as a guide when installing the 1771-IFF series A fast analog input module.

To See page

Important User Information 1

North American Hazardous Location Approval 4

Understand Product Compatibilty 5

Calculate Power Requirements 6

Determine Module Placement in the I/O Chassis 6

Set the Simulation Jumper 7

Set the Configuration Jumpers 7

Key the Backplane Connector 8

Install the Module and Field Wiring Arm 8

Connect Wiring to the Field Wiring Arm 9

Grounding 13

Configure the Module 14

Interpret Status Indicators 16

Troubleshooting 17

Specifications 18

Important User Information

1 Publication 1771-IN046B-EN-P - December 2003

Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

2 Fast Analog Input Module

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

Throughout this manual we use notes to make you aware of safety considerations.

WARNING

IMPORTANT

ATTENTION

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

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

• identify a hazard

• avoid a hazard

• recognize the consequence

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input 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

dus

trial equipment according to IEC/CISPR

in 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 "open type"

equip that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

ent. It must be mounted within an enclosure

See NEMA Standards publication 250 and IEC

blication 60529, as applicable, for explanations of

p 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.

Publication 1771-IN046B-EN-P - December 2003

4 Fast Analog Input Module

North American Hazardous Location Approval

This 1771-IFF series A module is hazardous location approved.

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

Products marked “CL I, DIV 2, GP A, B, C, D” are 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 rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest “T” number) may be used to help determine the overall temperature 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

WARNING

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

•Do not disconnect connections to this equ ipment 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 et non dangereux. Chaque produit est livré avec des marquages sur sa plaque d’identification qui indiquent le code de température pour les environnements dangereux. 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 déterminer 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

AVERTISSEMENT

•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’assurer que l’environnement est classé non dangereux avant de changer les piles.

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 5

Understand Product Compatibilty

ATTENTION

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.

The 1771-IFF module can be used with any 1771 I/O chassis. Compatibility and data table usage is listed below.

Catalog Number

Use of Data Table Compatibility

Image Input Bits

Output Image Bits

Read Block Words

Write Block Words

Addressing Chassis

1/2- Slot 1-Slot 2-Slot

Series

1771-IFF/A 8 8 24 41 Y Y Y A, B A = Compatible with 1771-A1, -A2, -A4

B = Compatible with 1771-A1B, -A2B, -A3B, -A3B1, -A4B Y = Compatible without restriction

ATTENTION

Do not use this module with Cat. No. 1771-AL PLC-2/20 or 2/30 Local Adapter.

Publication 1771-IN046B-EN-P - December 2003

6 Fast Analog Input Module

Calculate Power Requirements

Determine Module Placement in the I/O Chassis

The module receives its power through the 1771 I/O power supply and requires 500mA from the backplane.

Add this current to the requirements of all other modules in the I/O chassis to prevent overloading the chassis backplane and/or backplane power supply.

ATTENTION

Place your module in any slot of the chassis except for the extreme left slot. This slot is reserved for PC processors or adapter modules.

Group your modules to minimize adverse affects from radiated electrical noise and heat. We recommend the following:

• Group analog input and low voltage dc modules away from ac modules

or high voltage dc modules to minimize electrical noise interference.

• Do not place this module in the same I/O group with a digital

high-density I/O module when using 2-slot addressing. This module uses a byte in both the input and output image tables for block transfer.

Do not insert or remove modules from the I/O chassis while system power is ON. Failure to observe this rule could result in damage to the module circuitry.

The 1771-IFF is a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771-IN075 for detailed information on acceptable chassis, proper installation and grounding requirements. Limit the maximum adjacent slot power dissipation to 10W or less.

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 7

Set the Simulation Jumper

1. Locate the simulation jumper at the top edge of the module circuit board.

2. Using your fingers, slide the jumper of f the 2 posts.

3. Carefully position the jumper on 2 of the 3 posts that correspond to your requirement.

Set the Configuration Jumpers

The module is shipped with the simulation jumper set in position POS G. This setting allows input data to go above and below the range points. If the simulation jumper is set to the POS E position, input data is clamped (does not exceed) at range end points.

Simulation

Jumper

Simulation

Top edge of circuit board

POS G POS E

Simulation Jumper (shown in POS E position). This position provides Clamped Input Data at range end points.

Top edge of circuit board

POS G POS E

Simulation Jumper (shown in POS G position). This position does not Clamp Input Data at range end points.

The module has configuration jumpers for determining the input type (voltage or current) desired for each input. The module is shipped with the

configuration jumpers positioned for voltage mode.

Not that you can select either voltage or current for each input, but they must

l be either single-ended or all differential. Do not mix single-ended or

differential inputs on the module.

Remove the four screws securing the side

cover to the module and remove the covers.

Reposition the cover and secure with the four

screws removed in step 1.

19805

19813

Reposition the configuration jumpers associated with each

input channel according to your requirements

Y ou can mix voltage mode and current mode settings on the module. Make sure that the entire module is set for either single-ended or dif ferential. Do not mix them.

Voltage Mode

Differential or Single-ended (factory set)

Channel

Current Mode

Differential

Current

Single-ended

Odd channel current

Even channel voltage

Even channel current

Odd channel voltage

Single-ended Current

1 and 2 Channel 3 and 4

Channel 5 and 6

Channel

7 and 8 Channel 9 and 10

Channel 11 and 12

Channel 13 and 14

Channel 15 and 16

Configuration Jumpers

DifferentialSingle-ended

Channel 1

Channel 2

Channel 3

Channel 4

Channel 5

Channel 6

Channel 7

Channel 8

Publication 1771-IN046B-EN-P - December 2003

8 Fast Analog Input Module

Key the Backplane Connector

ATTENTION

Observe the following precautions when inserting or removing keys:

• insert or remove keys with

• make sure that key placement

Incorrect keying or the use of a tool can result in damage to the backplane connector and possible system faults.

your fingers

is correct

Place your module in any slot in the chassis except the leftmost slot which is reserved for processors or adapters.

Position the keying bands in the backplane connectors to correspond to the key slots on the module.

I/O chassis

Upper Connector

Y ou can change the position of these bands if subsequent system design and rewiring makes insertion of a dif ferent type of module necessary.

Place the keying bands:

between 10 and 12 between 24 and 26

11022-I

Install the Module and Field Wiring Arm

ATTENTION

WARNING

Remove power from the 1771 I/O chassis backplane and field wiring arm before removing or installing the I/O module.

• Failure to remove power from the backplane or wiring

arm could cause module damage, degradation of performance, or injury.

• Failure to remove power from the backplane could

cause injury or equipment damage due to possible unexpected operation.

If you insert or remove the module while backplane power is on, or connect or disconnect the wiring arm 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.

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 9

1771-A1B, -A2B, -A3B, -A3B1, -A4B I/O chassis

locking tab

card guides

Snap the chassis latch over the top of the module to secure it.

Attach the wiring arm (1771-WG) to the horizontal bar at the bottom of the I/O chassis.

The wiring arm pivots upward and connects with the module so you can install or remove the module without disconnecting the wires.

IFF module

1771-A1B, -A2B, -A3B1, -A4B Series B I/O chassis

locking bar pin

Swing the chassis locking bar down into place to secure the modules. Make sure the locking pins engage.

wiring arm

locking bar

card guides

IFF module

19809

1771-WG

Connect Wiring to the Field Wiring Arm

remove

horizontal bar

install

17643

Connect your I/O devices to the cat. no. 1771-WG wiring arm shipped with the module

ATTENTION

Remove power from the 1771 I/O chassis backplane and field wiring arm before removing or installing the I/O module.

• Failure to remove power from the backplane or wiring

arm could cause module damage, degradation of performance, or injury.

• Failure to remove power from the backplane could

cause injury or equipment damage due to possible unexpected operation.

Publication 1771-IN046B-EN-P - December 2003

10 Fast Analog Input Module

WARNING

If you connect or disconnect the wiring 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.

Input connections for the 1771-IFF with:

• single-ended inputs are shown on page 11.

• differential inputs are shown on page 12.

Minimizing Ground Loops

To minimize ground loop current on input circuits:

• use single-ended mode whenever possible

• use 2-wire transmitters with a common power supply

• separate 2-wire and 4-wire transmitters between different modules

• tie 4-wire transmitter and/or separate power supply grounds together

IMPORTANT

Mixing 2-wire and 4-wire transmitter inputs on the same module is not recommended. Power supply placement can make it impossible to eliminate ground loops.

Cable Lengths

Recommended maximum cable length for voltage-mode input devices is 50 feet (15.24m), due to possible signal degradation and electrical noise immunity in typical industrial environments. Cable length for current-mode input devices need not be as restrictive because analog signals from these devices are less sensistive to electrical noise interference.

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 11

Connection Diagram for 16 Single-ended Inputs and Two-Wire Transmitters

single-ended wiring

Note: Refer to transmitter manufacturers specifications for power supply connections.

Note:

– All module commons are electrically tied together inside the module.

– Jumper all unused channels to module common to reduce noise.

– Tie power supply grounds together to minimize ground loops.

The 1771-IFF module does not supply loop power for the input device. The user must supply loop power for loop-powered input devices.

The sensor cable must be shielded. The shield must:

extend the length of the cable, but be connected only at the 1771 I/O chassis extend up to the point of termination

Important: The shield should extend to the termination point, exposing just enough

2-Wire Transmitter

Power Supply

2-Wire Transmitter

Power Supply

cable to adequately terminate the inner conductors. Use heat shrink or another suitable insulation where the wire exits the cable jacket.

–

Functional Ground

Channel 1 Channel 2

Channel 3 Channel 4

Module Common

Channel 5 Channel 6 Channel 7 Channel 8

Module Common

Channel 9 Channel 10 Channel 11

Channel 12

Module Common

Channel 13 Channel 14 Channel 15

Channel 16 Module Common Module Common

1771-WG

Field Wiring Arm

1 2

3 4 5

6 7

8 9

10 11

12 13 14 15 16 17 18

19 20 21

Connection Diagram for 16 Single-ended Inputs and Four-Wire Transmitters

Note: Refer to transmitter manufacturers specifications for power supply connections.

Note:

– All module commons are electrically tied together inside the module.

– Jumper all unused channels to module common to reduce noise.

– Tie power supply grounds together to minimize ground loops.

The 1771-IFF module does not supply loop power for the input device. The user must supply loop power for loop-powered input devices.

The sensor cable must be shielded. The shield must:

extend the length of the cable, but be connected only at the 1771 I/O chassis extend up to the point of termination

Important: The shield should extend to the termination point, exposing just enough

Power Supply

cable to adequately terminate the inner conductors. Use heat shrink or another suitable insulation where the wire exits the cable jacket.

4-Wire Transmitter

–

Functional Ground

Channel 1

Channel 2

Channel 3

Channel 4 Module Common

Channel 5

Channel 6

Channel 7

Channel 8 Module Common

Channel 9

Channel 10

Channel 11

Channel 12 Module Common

Channel 13

Channel 14

Channel 15

Channel 16 Module Common Module Common

1771-WG

Field Wiring Arm

1 2

3 4 5

6 7

8 9

10 11

12 13 14 15 16 17 18

19 20 21

Publication 1771-IN046B-EN-P - December 2003

12 Fast Analog Input Module

differential wiring

Connection Diagram for 8 Differential Inputs and Two-Wire Transmitters

Note: Refer to transmitter manufacturers

specifications for power supply connections.

Note:

2-Wire Transmitter

– Unused channels must have their + and

- inputs jumpered together and tied to module common to reduce noise.

– Tie power supply grounds together to

2-Wire Transmitter

minimize ground loops.

The 1771-IFF module does not supply loop power for the input device. The user must supply loop power for loop-powered input devices.

Configuring the module for differential inputs does not provide isolation.

The sensor cable must be shielded. The shield must:

extend the length of the cable, but be connected only at the 1771 I/O chassis extend up to the point of termination

Important: The shield should extend to the termination point, exposing just enough

cable to adequately terminate the inner conductors. Use heat shrink or another suitable insulation where the wire exits the cable jacket.

Power Supply

–

Functional Ground

Channel 1+ Channel 1Channel 2+ Channel 2-

Not used Channel 3+ Channel 3Channel 4+ Channel 4Not used Channel 5+ Channel 5Channel 6+ Channel 6Not used Channel 7+ Channel 7Channel 8+

Channel 8Module Common Module Common

1771-WG Field W iring Arm

1 2

3 4 5

6 7

8 9

10 11

12 13 14 15 16 17 18

19 20 21

Connection Diagram for 8 Differential Inputs and Four-Wire Transmitters

Note: Refer to transmitter manufacturers

specifications for power supply connections.

Note:

Power Supply

4-Wire Transmitter

– Unused channels must have their + and

- inputs jumpered together and tied to module common to reduce noise.

– Tie power supply grounds together to

Power Supply

4-Wire Transmitter

minimize ground loops.

The 1771-IFF module does not supply loop power for the input device. The user must supply loop power for loop-powered input devices.

Configuring the module for differential inputs does not provide isolation.

The sensor cable must be shielded. The shield must:

extend the length of the cable, but be connected only at the 1771 I/O chassis extend up to the point of termination

Important: The shield should extend to the termination point, exposing just enough

cable to adequately terminate the inner conductors. Use heat shrink or another suitable insulation where the wire exits the cable jacket.

–

Functional Ground

Channel 1+

Channel 1-

Channel 2+

Channel 2-

Not used

Channel 3+

Channel 3-

Channel 4+

Channel 4-

Not used

Channel 5+

Channel 5-

Channel 6+

Channel 6-

Not used

Channel 7+

Channel 7-

Channel 8+

Channel 8Module Common Module Common

1771-WG Field Wiring Arm

1 2

3 4 5

6 7

8 9

10 11

12 13 14 15 16 17 18

19 20 21

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 13

Grounding

Cable Grounding

Remove a length of cable jacket from the Belden 8761 cable.

Belden 8761 Cable

When using shielded cable wire, ground the foil shield and drain wire only at one end of the cable. We recommend that you wrap the foil shield and drain together, and connect them to a chassis mounting bolt, grounding stud or chassis single-point grounding point. Use heat-shrink tubing to seal the exit point of the wires. At the opposite end of the cable, tape exposed shield and drain wire with electrical tape to insulate it from electrical contact.

Pull the foil shield and bare drain wire from the insulated wires.

Bare drain wire

Insulated wires

Foil shield

Twist the foil shield and drain wire together to form a single strand.

Attach a ground lug, and apply heat shrink tubing to the exit area.

Length as needed

20104

When you connect grounding conductors to the I/O chassis grounding stud, place a star washer under the first lug, then place a nut with captive lock washer on top of each ground lug.

Grounding Stud

I/O Chassis Side Plate

Use the cup washer if crimp-on lugs are not used.

Chassis Ground

Star Washer

Ground Lug

Nut

Nut and Captive Washer

Ground Lug

Shield and Drain twisted together

19480

Single-point Grounding

Extend shield to termination point. Expose just enough cable to adequately terminate inner conductors.

Use heat shrink tubing or other suitable insulation where wire exits cable jacket.

Shield and Drain twisted together

#10 Thread-forming screw

External-tooth Washers

19923

Publication 1771-IN046B-EN-P - December 2003

14 Fast Analog Input Module

any of 7 input voltage or current

Configure the Module

Dec. Bits 15 14 13

Octal Bits 17 16 15

Word 1 8 7 6 5 4 3 2 1 Range Selection - Channels 1 - 8

2 16 15 14 13 12 11 10 9

Input range selections allow the user to configure the inputs for

ranges. Two bits are required for for each channel. Bits 00 and 01 for channel 1, bits 02 and 03 for channel 2, etc.

3 Real Time Sampling

Real time sampling - Default is no RTS

Bit 10 Bit 09

(11)

(12)

0 1

Data format - set to

match your processor .

BCD (default)

2' s Complement, data first Two' s complement binary

Signed magnitude binary

Minimum sign bits , when set, designate negative minimum scaling values for the corresponding input channels. Bit 00 corresponds to channel 1, bit 01 corresponds to channel 2, etc.

You must configure the module to conform to the analog device and specific application that you have chosen. Use the configuration information below to configure your module to your specifications.

1 2

1 4

Bit 01 Bit 00 Voltage or Current Input

100

0 0 1 to 5V dc, 4 to 20mA (default)

Data

Format

08 07 06 05 04 03 02 01 00

11 10 07 06 05 04 03 02 01 00

1 0 to 5V dc, 0 to 20mA

0 -5 to +5V dc, -20 to +20mA

1 -10 to +10V dc, 0 to 10V dc

Input Type

Digital Filter

Digital filter reduces ef fect of noise on input. (Default is no filter.)

Input type, set bit for differential mode on all channels. Reset (0) = single-ended inputs (default) Set (1) = differential inputs

Description

Range Selection - Channels 9-16

Real time sampling, data format, input type and digital filter

Sign Bits, minimum scaling values

Maximum sign bits, when set, designate maximum scaling values that are negative.

6, 8, 10, 12,

14, 16, 18, 20, 22, 24, 26, 28, 30,

32, 34, 36

7, 9, 1 1, 13,

15, 17, 19, 21, 23, 25, 27, 29, 31,

33, 35, 37

41 BCD or binary , 0-256 (2X only), 0 = default (8X oversample) Oversampling

Maximum scaling value must be greater than minimum on any particular channel. Bit 00 corresponds to channel 1, bit 01 corresponds to channel 2, etc.

Minimum scaling values for each channel. Enter in BCD format. Channel 1 - minimum scaling

Maximum scaling values for each channel. Enter in BCD format. Channel 1 - maximum scaling

Offset calibration - Each bit represents a channel (bit 00 to channel 1, bit 02 to channel 2, etc.). When the bit is set, and a BTW has been sent, the module will read the channels and adjust the of fset to analog ground potential. In differential mode, bits 08 thru 15 (10 thru 17 in octal) are ignored. In current mode, apply 0mA.

Gain calibration - Each bit represents a channel (bit 00 to channel 1, bit 02 to channel 2, etc). When the bit is set, and a BTW has been sent, the module will read the channels and adjust the gain correction values. If used on +, 0 to 5, or 1 to 5V ranges, a value of 5V is expected. If used on +10V range, 10V is expected. In dif ferential mode, bits 08 thru 15 (10 thru 17 in octal) are ignored. In current mode, apply 20mA.

14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Channel Sampling Disable

Sign Bits, maximum scaling values

Of fset Calibration

Gain Calibration

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 15

Underrange bts for each channel. Bit 00 for channel 1, bit 01 for channel 2, etc

Use the following table to read data from your input module.

Dec. Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Octal Bits 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Word 1

Hardware fault - (HF) When this bit is set, the dc/dc converter fuse has blown. Digital logic will continue to operate.

EEPROM status bit - (EE) This bit is set if an error occurs saving calibration data to nonvolatile memory . If this bit is set at powerup, the data from the EEPROM did not pass the checksum and no calibration values are used. Calibration status bit - (CS) When calibrating the module, this bit will be cleared if the calibration was successful. If the bit is set, an incorrect voltage/current was applied, or

offset and gain calibrations were attempted simultaneously

Real time sample fault bit - (RTS) This bit is set if the module is configured for R TS and a block transfer read has not occurred within the user±programmed period.

4 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

5 Channel 1 Input Channel 1 Input

6 Channel 2 Input Channel 2 Input

7 Channel 3 Input Channel 3 Input

8 Channel 4 Input Channel 4 Input

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

These bits are set (1) at approximately the input range limits shown on the right.

Overrange bits for each channel. Bit 00 for channel 1, bit 01 for channel 2, etc. These bits are set (1) at approximately the input range limits shown on the right.

Polarity bits - Set when input is less than zero. Bit 00 for channel 1, bit 01 for channel 2, etc.

HF EE CS

RTS IS

Power up bit - (PU) Used by the module to tell the processor that it is alive but not yet configured. It is a key element in the application program.

Out of range bit - (OR) This bit is sent to tell the processor that one or more channels are either over or under range.

Invalid scaling bit - (IS) This bit reports that the scaling is somehow invalid. Usually , both values are equal or minimum is greater than maximum when this bit comes on. Can also be an invalid filter value.

Data underrange for channels 1-16

Data overrange for channels 1-16

1 to 5V dc, 4 to 20mA (default)

0 to 5V dc, 0 to 20mA

-5 to +5V dc, -20 to +20mA

-10 to +10V dc, 0 to 10V dc

Data polarity for channels 1-16

Description

Diagnostics

⇓ ⇓ ⇓ ⇓

20 Channel 16 Input Channel 16 Input

21 Offset calibration results bits - Each bit represents a channel. After a

calibration BTW has been sent, the module confirms calibration by echoing back the channels that were calibrated during the offset calibration BTW . In differential mode, channels 09 thru 16 are zero.

22 Gain calibration results bits - Each bit represents a channel. After a calibration

BTW has been sent, the module confirms calibration by echoing back the channels that were calibrated during the gain calibration BTW. In dif ferential mode, channels 09 thru 16 are zero.

23 binary, 1ms resolution Time Stamp

24 10ms resolution Scan time

Of fset Calibration Results

Gain Calibration Results

Publication 1771-IN046B-EN-P - December 2003

16 Fast Analog Input Module

When Data Format bits 9 and 10 in block transfer write word 3 are set for “2’s complement - data first,” the block transfer read will transmit channel data first in the transfer. For single-ended configuration, words 1 through 16 will have channel data. For differential configuration, words 1 through 8 will contain channel data.

Default Configuration

If a write block of five words with all zeroes is sent to the module, default selections will be:

• 1 to 5V dc or 4 to 20mA (dependent on configuration jumper setting)

• BCD data format

• no real time sampling (RTS)

• no filtering

• single-ended inputs

• 8X oversample

• oversample enabled on all channels

Interpret Status Indicators

The front panel of the analog input module contains a green RUN indicator and a red FAULT indicator. At power-up, the module momentarily turns on the red indicator as a lamp test, then checks for:

• correct RAM operation

• firmware errors

If there is no fault, the red indicator goes off.

The green indicator comes on when the module is powered. It will flash until the module is programmed. If a fault is found initially or occurs later, the red fault indicator lights. The module also reports status and specific faults (if they occur) in every transfer of data (BTR) to the PC processor. Monitor the green and red indicators and status bits in word 1 of the BTR file when troubleshooting your module.

FAST

ANALOG

(12 BIT)

RUN

FL T

Green RUN indicator

Red F AULT indicator

Publication 1771-IN046B-EN-P - December 2003

Fast Analog Input Module 17

Troubleshooting

Possible module fault causes and corrective action is described in the following table.

Indicators Probable Cause Recommended Action

RUN (green on)

FLT (red off)

RUN (green blinking)

FLT (red off)

RUN (green off)

FLT (red on)

RUN (green off)

FLT (red off)

Normal operation None

Awaiting configuration bloc

k transfer write

Hardware failure in modul

No power Turn off power. Remove and reinsert

Send configuration BTW

Return module for repair

modul

e into chassis. Return power. If problem still exists, and chassis power supply is functioning properly, return the module for repair.

Publication 1771-IN046B-EN-P - December 2003

18 Fast Analog Input Module

Specifications

Description Value

Inputs per module 16 single-ended; 8 differential low level

Module Location 1771 I/O chassis - 1 slot Input Voltage Ranges (nominal) +1 to +5V dc

0 to +5V dc

-5 to +5V dc

-10 to +10V dc 0 to +10V dc

Input Current Ranges (nominal) +4 to +20mA

0 to 20mA

-20 to +20mA

Resolution 12-bit binary

12 bits plus sign on bipolar ranges

Accuracy 1.0% of full scale range at 25°C

Linearity

Repeatability

Isolation Voltage Tested to 850V dc for 1s

Input overvoltage protection

Input overcurrent protection (current ranges)

Common mode voltage Input impedance >10 megohms (voltage ranges)

Common mode rejection 80db, dc - 120Hz

Current requirements 500mA at 5V dc from I/O chassis backplane

Power dissipation Backplane: 2.5W maximum; Inputs: 2.5W maximum

Thermal dissipation 17 BTU/hr maximum

Unscaled BCD and binary output to processor

+1 LSB

35V maximum (voltage mode)

8V maximum (current mode)

30mA

+35V

250 ohms (current ranges)

0000 to 4095 for polar ranges (0-5V, 1-5V 0-20mA, and 4-20mA)

-409510 to +409510 for bipolar ranges (+5V, +10V,+ 20mA)

Publication 1771-IN046B-EN-P - December 2003

Engineering units sent to processor

Fastest internal scan rate 8 channels in less than 2ms (depending on number of

Environmental Conditions

Operational Temperature IEC 60068-2-1 (Test Ad, Operating Cold),

Storage Temperature IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),

Relative Humidity IEC 60068-2-30 (Test Db, Unpackaged Nonoperating

+999910 with selectable scaling

oversamples, number of channels, and active features)

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)

IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock): -40 to 85°C (-40 to 185°F)

Damp Heat): 5 to 95% noncondensing

Fast Analog Input Module 19

Description Value

Shock

Operating

Non-operating

Vibration IEC 60068-2-6, (Test Fc, Operating)

ESD Immunity IEC 61000-4-2:

Radiated RF Immunity IEC 61000-4-3:

EFT/B Immunity IEC 61000-4-4:

Surge Transient Immunity IEC 61000-4-5:

Conducted RF Immunity IEC 61000-4-6:

Emissions CISPR 11

Enclosure Type Rating None (open-style)

Field Wiring Arm Cat. No. 1771-WG

Field Wiring Arm Screw Torque 9 pound-inches (1.0Nm) Conductors Wire Size

Rockwell Automation 1771-IFFA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Important User Information

Understand Product Compatibilty

Calculate Power Requirements

Determine Module Placement in the I/O Chassis

Set the Simulation Jumper

Set the Configuration Jumpers

Key the Backplane Connector

Install the Module and Field Wiring Arm

Connect Wiring to the Field Wiring Arm

Grounding

Configure the Module

Interpret Status Indicators

Troubleshooting

Specifications