Rockwell Automation 1771-IFEC User Manual

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Page 1

Installation Instructions

Analog Input Module

(Catalog Number 1771-IFE/C)

This

icon is used when additional information is available in the

Input Module User Manual

publication 17716.5.1

If you need a copy of this manual, fax the enclosed User Manual Request Card to 18005766340. If you are outside the U.S., fax the card to13307234036.

Analog

15.

Use this document as a guide when installing the 1771-IFE/C analog input module.

To See page

Prevent Electrostatic Discharge Below Understand Compliance to European Union Directives 2

Understand Product Compatibility 2 Calculate Power Requirements 3 Determine Module Placement 3

Set the A/B Simulation Jumper 3

Set the Configuration Jumpers 4

Key the Backplane Connector 4

Install the Module and Field Wiring Arm 5

Connect Wiring to the Field Wiring Arm 6

Ground the Chassis and Module 9

Configure the Module 10

For this reference information See page

Status Indicators 12 Troubleshooting 13 Specifications 13 CSA Hazardous Approval 15 Differences Between Series A, B and C Modules 16

Prevent Electrostatic Discharge

The analog input module is sensitive to electrostatic discharge.

ATTENTION: Electrostatic discharge can damage integrated circuits or semiconductors if you touch

backplane connector pins. Follow these guidelines when you handle the module:

• Touch a grounded object to discharge static potential

• Wear an approved wrist-strap grounding device

• Do not touch the backplane connector or

connector pins

• Do not touch circuit components inside the module

• If available, use a static-safe work station

• When not in use, keep the module in its

static-shield box

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Page 2

Analog Input Module2

Number

Image

Block

Chassis

Understand Compliance to European Union Directives

If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

EMC Directive

This product is tested to meet Council Directive 89/336/EEC Electromagnetic Compatibility (EMC) and the following standards, in whole or in part, documented in a technical construction file:

• EN 50081-2EMC – Generic Emission Standard,

Part 2 – Industrial Environment

• EN 50082-2EMC – Generic Immunity Standard,

Part 2 – Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61131–2 Programmable Controllers, Part 2 – Equipment Requirements and Tests.

Understand Product Compatibility

For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as these Allen-Bradley publications:

Publication Publication number

Industrial Automation Wiring and Grounding Guidelines For Noise Immunity

Guidelines for Handling Lithium Batteries AG5.4 Automation Systems Catalog B111

17704.1

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

Use of Data Table Compatibility

Catalog Number

1771IFE 8 8 22 39 Y Y Y A, B

= Compatible with 1771A1, A2, A4 B = Compatible with 1771A1B, A2B, A3B, A3B1, A4B Y = Compatible without restriction.

Input

Ima

Bits

Output

Ima

Bits

Read

Block

Words

Write

Block

Words

Addressing

1/2Slot 1Slot 2Slot

Chassis

Series

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

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Analog Input Module 3

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.

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

ATTENTION: 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 module circuitry.

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 discrete

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.

Set the A/B Simulation Jumper

The module is shipped with the A/B simulation jumper set in position POS G for Series C applications. This setting returns input data above and below the range end points. If you are replacing a Series A or B 1771-IFE module with this module, reset the simulation jumper to the POS E position as shown below.

Set the Series A/B Simulation Jumper

1. Locate the simulation jumper at the top edge

of the module circuit board.

2. Using your fingers, slide the jumper off the 2 posts.

3. Carefully position the jumper on 2 of the 3 posts that

correspond to your requirement.

A/B

Simulation Jumper

Series

A and B

Simulation

Series C

Application

Top edge of circuit board

POS G POS E

Simulation Jumper (shown in A/B position)

Top edge of circuit board

POS G POS E

Simulation Jumper (shown in series C position)

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Analog Input Module4

Set the Configuration Jumpers and Key the Backplane Connector

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.

19813

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 and the A/B simulation jumper set for Series C. If you are replacing a Series A or B 1771-IFE module with this module, reset the simulation jumper as shown above.

You can select either voltage or current for each input, but all inputs must be either single-ended or differential. Do not mix single-ended

and differential inputs on the module.

Reposition the configuration jumpers associated with each input

channel according to your requirements

You can mix voltage mode and current mode settings on the module. Make sure that the entire module is set for either singleended or differential. Do not mix them.

Voltage Mode

Differential or Singleended (factory set)

DifferentialSingleended

Channel 1

Channel 2

Channel 3

Channel 4

Channel 5

Channel 6

Channel 7

Channel 8

19805

Current Mode

Differential Current

Singleended

Odd channel current

Even channel voltage

Even channel current

Odd channel voltage

Singleended Current

Channel 1 and 2 Channel 3 and 4

Channel 5 and 6 Channel

7 and 8 Channel 9 and 10

Channel

1 and 12

1 Channel 13 and 14 Channel 15 and 16

Configuration Jumpers

Key the Backplane Connector

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.

Place the keying bands:

between 10 and 12 between 24 and 26

You can change the position of these bands if subsequent system design and rewiring makes insertion of a different type of module necessary.

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17715.45 - July 1997

I/O chassis

Upper Connector

11022I

Page 5

Analog Input Module 5

Install the Module and Field Wiring Arm

ATTENTION: Remove power from the 1771 I/O

chassis backplane and field wiring arm before removing or installing an 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.

Place the module in the card guides on the top and bottom of the chassis that guide the module into position.

Important: Apply firm even pressure on the module to seat it into its

backplane connector.

1771A1B, A2B, A3B1, A4B Series B I/O chassis1771A1B, A2B, A3B, A3B1, A4B I/O chassis

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

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

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.

horizontal bar

remove

install

wiring arm

1771WG

17643

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Analog Input Module6

Connect Wiring to the Field Wiring Arm

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 an 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.

Input connections for the 1771-IFE module with:

• single-ended inputs are shown on page 7

• differential inputs are shown on page 8

Minimizing Ground Loops

To minimize ground-loop currents 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: We do not recommend mixing 2-wire and 4-wire

transmitter inputs on the same module. 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. This recommendation is based on considerations of 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 sensitive to electrical noise interference.

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Page 7

Analog Input Module 7

Connection

Note:

specifications for power supply connections.

NOTE:

- All module commons are electrical ly tied together inside the module.

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

- T

ie power supply grounds together to

minimize ground loops.

Attention: Analog input signals must be within + to module common. This input signal includes any common mode voltage present between either input terminal and module common. If an input terminal exceeds this range, channeltochannel crosstalk can cause invalid input readings and invalid underrange or overrange bits.

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

Diagram for 16 Singleended Inputs and T

Refer to transmitter manufacturers



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:

2Wire Transmitter

14.25V referenced

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.

woW

Power Supply

ire T

ransmitters

–

Channel 1 Channel 2

Channel 3 Channel 4 Module Common Channel 5 Channel 6

Source Ground

Channel 7 Channel 8 Module Common Channel 9 Channel 10 Channel 1

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

9 10 11

12 13 14 15 16 17 18

19 20 21

Connection

Note:

specifications for power supply connections.

NOTE:

- All module commons are electrical ly tied together inside the module.

Jumper all unused channels to module

common to reduce noise.

ie power supply grounds together to

- T minimize ground loops.

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

Diagram for 16 Singleended Inputs and FourW

Refer to transmitter manufacturers

Power



Supply

Power Supply

14.25V referenced

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:

4Wire Transmitter

ire T

ransmitters

–

Channel 1 Channel 2

Channel 3 Channel 4 Module Common Channel 5 Channel 6

Source Ground

Channel 7 Channel 8 Module Common Channel 9 Channel 10 Channel 1

Channel 12 Module Common Channel 13 Channel 14

Channel 15 Channel 16 Module Common Module Common

1771WG

Field Wiring

Arm

9 10 11

12 13 14 15 16 17 18

19 20 21

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Analog Input Module8

Connection

Note:

specifications for power supply connections.

NOTE:

Unused channels must have their + and

Diagram for 8 Differential Inputs and T

Refer to transmitter manufacturers

woW

2Wire Transmitter

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

-T

ie power supply grounds together to

2Wire Transmitter

minimize ground loops.

Attention: Analog input signals must be within +

14.25V referenced to module common. If an input channel exceeds this range, channeltochannel crosstalk can cause invalid input readings and invalid underrange or overrange bits.

The 1771IFE 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 dif

ferential 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:

Power Supply

ire T

ransmitters

Channel

–

Source Ground

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 8 Module Common Module Common

1 2

3 4 5

6 7

8 9

10 11

12 13 14 15 16 17 18

19 20 21

1771WG Field Wiring Arm

Connection

Note:

specifications for power supply connections.

NOTE:

Unused channels must have their + and

Diagram for 8 Differential Inputs and FourW

Refer to transmitter manufacturers

Power Supply

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

-T

ie power supply grounds together to

Power Supply

minimize ground loops.

Attention: Analog input signals must be within +

14.25V referenced to module common. If an input channel exceeds this range, channeltochannel crosstalk can cause invalid input readings and invalid underrange or overrange bits.

The 1771IFE 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 dif

ferential 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:

ire T

4Wire Transmitter

ransmitters

–

Source 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 8

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

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Page 9

Analog Input Module 9

Ground the Chassis and Module

Use the following diagrams to ground your I/O chassis and analog input module. Follow these steps to prepare the cable:

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

Belden

8761 Cable

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.

Chassis Ground 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.

Ground Lug

Nut

Nut and Captive Washer

Grounding Stud

Star

I/O Chassis Side Plate

Use

the cup washer if crimpon lugs are not used.

Singlepoint Grounding

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

Washer

Ground Lug

Shield and Drain twisted together

Attach a ground lug.

Fold shield back, and apply shrink tubing to secure.

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 wire together and connect them to a chassis mounting bolt. At the opposite end of the cable, tape exposed shield and drain wire with electrical tape to insulate it from electrical contact.

Refer to Industrial Automation Wiring and Grounding Guidelines for Noise Immunity, publication 1770-4.1, for additional information.

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

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Page 10

Analog Input Module10

user to configure the inputs for any of

bits are required for each channel

Configure the Module

Because of the many analog devices available and the wide variety of possible applications, you must configure the module to conform

For

detailed configuration information, see chapter 2 of your

Analog Input User Manual

(publication 17716.5.1

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 8 7 6 5 4 3 2 1

2 16 15 14 13 12 11 10 9

Input range selections

user to configure the inputs for any of 7 input voltage or current ranges. T bits are required for each channel. Bits 00 and 01 for channel 1, bits 02 and 03 for channel 2, etc.

3 Real T

Real time sampling

Bit 10

Bit 09

(12)

(11)

0 0

0 1

1 0

1 1

allow the

ime Sampling

- Default is no R

Data format

your processor

- set to match .

BCD (default)

Reserved

complement binary

Two's

Signed magnitude binary

15).

Bit 01 Bit 00Voltage or Current Input

0 0

0 1

1 0

1 1

TS.

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

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

Format

Input Type

Digital Filter

Digital filter

filter.)

Input type

Reset (0) Set (1)

reduces ef

, set bit for dif

= singleended inputs (default) = dif

ferential inputs

Description

Range Selection  Channels 1 - 8

Range Selection  Channels 9 - 16

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

fect of noise on input. (Default is no

ferential mode on all channels.

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

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.

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

Maximum scaling

values for each channel. Enter in BCD format.

Offset calibration - Each bit represents a channel (bit 00 to channel 1, bit 01 to channel 2, etc.). When the bit is set, and a BTW has been sent, the module will read the channels and adjust the offset 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 01 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 differential mode, bits 08 thru 15 (10 thru 17 in octal) are ignored. In current mode, apply 20mA.

Sign Bits, minimum scaling values

Sign Bits, maximum scaling values

Channel 1  minimum scaling

Channel 1  maximum scaling

Offset

Calibration

Gain

Calibration

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Page 11

Analog Input Module 11

Und

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

g ,,

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

Description

Word 1 HF EE CS RTS IS OR PU Diagnostics

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.

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.

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.

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.

Real time sample fault bit - (RTS) This bit is set if the module is

configured for RTS and a block transfer read has not occurred within the user-programmed period.

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

2 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data underrange for channels 1-16

3 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data overrange for channels 1-16

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

These

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

to 5V dc, 0 to 20mA

5 to +5V dc, 20 to +20mA

10 to +10V dc, 0 to 10V dc

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

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

Data polarity for channels 1-16

2, etc.

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

⇓⇓⇓⇓

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 differential mode, channels 09 thru 16 are zero.

Attention: If

underrange/overrange bits.

an input terminal'

s voltage exceeds +

14.25V as referenced to module common, channeltochannel crosstalk can cause invalid input readings and invalid

Offset Calibration Results

Gain Calibration Results

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Page 12

Analog Input Module12

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

• no scaling

• single-ended inputs

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 turns off.

ANALOG IN (12 BIT)

RUN

FLT

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.

Green RUN indicator

Red FAULT indicator

10528I

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Page 13

Analog Input Module 13

Troubleshooting

For

detailed troubleshooting information, see chapter 7 of your

Analog Input User Manual

(publication 17716.5.1

Specifications

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

Indicators Probable Cause Recommended Action

15).

Description Value

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

Module Location 1771 I/O rack - 1 slot

Input voltage ranges (nominal)

Input current ranges (nominal)

Resolution 12-bit binary

Accuracy 0.1% of full scale range @ 25oC

Linearity +1 LSB

Repeatability +1 LSB

Isolation Voltage Isolation meets or exceeds UL Standard 508, and CSA Standard

Input overvoltage protection

Input overcurrent protection (current ranges) 30mA

Common mode voltage +14.25 Volts

Input impedance >10 Megohms for voltage ranges; 250 ohms for current ranges

Common mode rejection 80 db, dc-120 Hz

Current Requirements 500mA @ +5V from I/O chassis backplane

Power Dissipation 2.5 Watts (maximum)

Specifications continued on next page

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 Block Transfer Write

Hardware failure in module

No power Turn off power. Remove and reinsert

+1 to +5V dc 0 to +5V dc

-5 to +5V dc

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

+4 to +20mA 0 to +20mA

-20 to +20mA

12 bits plus sign on bipolar ranges

C22.2 No. 142.

200V (voltage mode) 8V (current mode)

Send configuration BTW

Return module for repair

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

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Page 14

Analog Input Module14

ValueDescription

Thermal Dissipation 8.52 BTU/hr (maximum)

Unscaled BCD and binary output to processor

0000 to +409510 for polar ranges (0 to 5V, +1 to +5V, 0 to +20mA, and +4 to +20mA)

-4095

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

Engineering units sent to processor +999910 with selectable scaling

13.7 ms for 8 differential inputs (no digital filtering) -add 0.3ms for

Internal scan rate

filtering

27.4 ms for 16 single-ended input (no digital filtering) -add 0.3 for filtering

Environmental conditions

Operational temperature: Storage temperature: Relative humidity: Operating

Storage

Conductors Wiring

Differences Between Series A, B and C Modules

Feature Series A, and B Series C

Indicator lights 1. At power-up, the green run indicator

comes on and stays on.

1. At powerup, the green run indicator blinks until a configuration BTW is received. After a configuration BTW is received, the green indicator stays on.

2. Limited to 3 bits of diagnostic information

2. Has 6 bits of diagnostic information representing 6 possible faults.

Input Data Input clamped at range ends. Will not go

above or below range limits.

Returns input data above and below the range end points. For example, a 1-5V input with default scaling will return all values between +

5.2V. Jumper settable for Series A and B simulation.

Default Scaling Allows default scaling with both maximum and minimum

scaling values as zero. No scaling error will be reported.

Block Transfer Lengths Maximum block transfers lengths of 20 words

for BTR and 37 words for BTW. Default length of 0 words.

Configuration Plugs 24 configuration plugs to set on 3 row

Maximum block transfers lengths of 22 words for BTR and 39 words for BTW (due to autocalibration). Default length of 0 words (same as series A).

16 configuration plugs to set on eight 2 row headers.

headers.

Compatibility The series A and B modules are compatible

with the 1771AL PLC local adapter.

Calibration Procedures Used jumpers and potentiometers to adjust

10V reference and null input offset.

Agency Approvals Series A module not CE certified. Series B

The series C module is not compatible with the 1771AL PLC local adapter.

Uses precision voltage source to supply voltage and a block transfer to set offset and gain.

Series C module CE certified.

module CE certified.

AllenBradley, a Rockwell Automation Business, has been helping its customers improve productivity and quality for more than 90 years. We design, manufacture and support a broad range of automation products worldwide. They include logic processors, power and motion control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the world's leading technology companies.

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United

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enezuela

AllenBradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: (1) 414 3822000 Fax: (1) 414 3824444

Publication

Supersedes

17715.45 - July 1997

publication 17715.45 - March 1996

Publication

17715.45 - July 1997

•New

• Yugoslavia

Zealand • Norway • Pakistan • Peru • Philippines • Poland • Portugal • Puerto

•Switzerland •

1997 AllenBradley Company

aiwan

Ireland

•Israel • Italy

• Thailand • T

, Inc. Printed in USA

urkey

955127-29

•

Rockwell Automation 1771-IFEC User Manual

Contents

Prevent Electrostatic Discharge

Understand Compliance to European Union Directives

Understand Product Compatibility

Calculate Power Requirements

Determine Module Placement in the I/O Chassis

Set the A/B Simulation Jumper

Set the Configuration Jumpers and Key the Backplane Connector

Install the Module and Field Wiring Arm

Connect Wiring to the Field Wiring Arm

Ground the Chassis and Module

Configure the Module

Interpret Status Indicators

Troubleshooting

Specifications

Differences Between Series A, B and C Modules