Rockwell Automation 1769-IF8 User Manual

Installation Instructions

Compact I/O 1769-IF8 Analog Input Module

Inside
Module Description ..................................................................................	2
Module Installation...................................................................................	3
System Assembly......................................................................................	4
Mounting Expansion I/O ...........................................................................	5
Replacing a Single Module within a System ...........................................	7
Module Spare/Replacement Parts ...........................................................	8
Field Wiring Connections..........................................................................	8
I/O Memory Mapping .............................................................................	13
Specifications .........................................................................................	24
Hazardous Location Considerations .......................................................	27
Environnements dangereux ....................................................................	27
For More Information ..............................................................................	28

Publication 1769-IN067B-EN-P - September 2005

2 Compact I/O 1769-IF8 Analog Input Module

Module Description

1

INPUT	OK
	Analog

10a

10

10b

8a

7a

7a

5a

9

7b	7b
	8b

	2a
		3
WARNING -Do Not
Remove RTB Unless
Area is Non-Hazardous
V/I in 0- V in 0+	V/I in 4- V in 4+
I in 0+	I in 4+
ANLG Com	ANLG Com
V in 1+	V in 5+
V/I in 1-	V/I in 5-
I in 1+	I in 5+
ANLG Com	ANLG Com
V in 2+	V in 6+
V/I in 2-	V/I in 6-
I in 2+	I in 6+
ANLG Com	ANLG Com
V in 3+	V in 7+
V/I in 3-	V/I in 7-
I in 3+	I in 7+
ANLG Com	ANLG Com	4
NC	NC
NC	NC
1769-IF8
	2b

Item Description

1bus lever

(with locking function)

2a	upper panel mounting tab
2b	lower panel mounting tab
3	module status LED

4module door with terminal identification label

		5a	movable bus connector
			with female pins
		5b	stationary bus connector
			with male pins
	6		nameplate label
		7a	upper
			tongue-and-groove slots
	5b 7b		lower
			tongue-and-groove slots
		8a	upper DIN rail latch
6
		8b	lower DIN rail latch
	9		write-on label (user ID tag)
	10		removable terminal block (RTB)
			with finger-safe cover
		10a	RTB upper retaining screw
		10b	RTB lower retaining screw

Publication 1769-IN067B-EN-P - September 2005

Compact I/O 1769-IF8 Analog Input Module 3

Module Installation

Compact I/O is suitable for use in an industrial environment when installed in accordance with these instructions. Specifically, this equipment is intended for use

in clean, dry environments (Pollution degree 2(1)) and to circuits not exceeding Over Voltage Category II(2) (IEC 60664-1).(3)

Prevent Electrostatic Discharge

	ATTENTION	Electrostatic discharge can damage integrated circuits or
		semiconductors if you touch bus connector pins or the terminal
		block. 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 bus 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.

Remove Power

	ATTENTION	Remove power before removing or inserting this module. When
		you remove or insert a module with power applied, an electrical
		arc may occur. An electrical arc can cause personal injury or
		property damage by:

•sending an erroneous signal to your system’s field devices, causing unintended machine motion

•causing an explosion in a hazardous environment

Electrical arcing causes excessive wear to contacts on both the module and its mating connector. Worn contacts may create electrical resistance.

(1)Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that occasionally a temporary conductivity caused by condensation shall be expected.

(2)Over Voltage Category II is the load level section of the electrical distribution system. At this level transient voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.

(3)Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC) designations.

Publication 1769-IN067B-EN-P - September 2005

4 Compact I/O 1769-IF8 Analog Input Module

System Assembly

The module can be attached to the controller or an adjacent I/O module before or after mounting. For mounting instructions, see “Panel Mounting” on page 6, or “DIN Rail Mounting” on page 7. To work with a system that is already mounted, see “Replacing a Single Module within a System” on page 7.

The following procedure shows you how to assemble the Compact I/O system.

3

4

2

1

6

1	5
	30536-M

1.Disconnect power.

2.Check that the bus lever of the module to be installed is in the unlocked (fully right) position.

3.Use the upper and lower tongue-and-groove slots (1) to secure the modules together (or to a controller).

4.Move the module back along the tongue-and-groove slots until the bus connectors (2) line up with each other.

5.Push the bus lever back slightly to clear the positioning tab (3). Use your fingers or a small screwdriver.

Publication 1769-IN067B-EN-P - September 2005

Compact I/O 1769-IF8 Analog Input Module 5

6.To allow communication between the controller and module, move the bus lever fully to the left (4) until it clicks. Ensure it is locked firmly in place.

	ATTENTION			When attaching I/O modules, it is very important that the bus
				connectors are securely locked together to ensure proper
				electrical connection.

7.Attach an end cap terminator (5) to the last module in the system by using the tongue-and-groove slots as before.

8.Lock the end cap bus terminator (6).

	IMPORTANT	A 1769-ECR or 1769-ECL right or left end cap must be used to
		terminate the end of the communication bus.

Mounting Expansion I/O

	ATTENTION			During panel or DIN rail mounting of all devices, be sure that all
				debris (metal chips, wire strands, etc.) is kept from falling into the
				module. Debris that falls into the module could cause damage on
				power up.

Minimum Spacing

Maintain spacing from enclosure walls, wireways, adjacent

equipment, etc. Allow 50

Side

mm (2 in.) of space on all sides for adequate ventilation, as shown:

Host Controller

Top

Compact I/O			Compact I/O		Compact I/O	Compact I/O	Compact I/O	End Cap
		Bottom

Side

Publication 1769-IN067B-EN-P - September 2005

6 Compact I/O 1769-IF8 Analog Input Module

Panel Mounting

Mount the module to a panel using two screws per module. Use M4 or #8 panhead screws. Mounting screws are required on every module.

Panel Mounting Using the Dimensional Template

Spacing for single-wide modules 35 mm (1.378 in). Spacing for one-and-a-lhalfMounting-wide modules 52.5 mm (2.067 in).

Refer to host controller documentation for this dimension.

NOTE: Overall hole spacing tolerance: ±0.4 mm (0.016 in.)

Locate holes every 17.5 mm (0.689 in) to allow for a mix of single-wide and one-and-a-half-wide modules (e.g., 1769-OA16).

Host Controller

Panel Mounting Procedure Using Modules as a Template

The following procedure allows you to use the assembled modules as a template for drilling holes in the panel. If you have sophisticated panel mounting equipment, you can use the dimensional template provided on page 6. Due to module mounting hole tolerance, it is important to follow these procedures:

1.On a clean work surface, assemble no more than three modules.

2.Using the assembled modules as a template, carefully mark the center of all module-mounting holes on the panel.

3.Return the assembled modules to the clean work surface, including any previously mounted modules.

4.Drill and tap the mounting holes for the recommended M4 or #8 screw.

5.Place the modules back on the panel and check for proper hole alignment.

6.Attach the modules to the panel using the mounting screws.

	NOTE	If mounting more modules, mount only the last one of this
		group and put the others aside. This reduces remounting time
		during drilling and tapping of the next group.

7. Repeat steps 1 to 6 for any remaining modules.

Publication 1769-IN067B-EN-P - September 2005

Compact I/O 1769-IF8 Analog Input Module 7

DIN Rail Mounting

The module can be mounted using the following DIN rails: 35 x 7.5 mm (EN 50 022 - 35 x 7.5) or 35 x 15 mm (EN 50 022 - 35 x 15).

Before mounting the module on a DIN rail, close the DIN rail latches. Press the DIN rail mounting area of the module against the DIN rail. The latches will momentarily open and lock into place.

Replacing a Single Module within a System

The module can be replaced while the system is mounted to a panel (or DIN rail). Follow these steps in order:

1.Remove power. See important note on page 3.

2.On the module to be removed, remove the upper and lower mounting screws from the module (or open the DIN latches using a flat-blade or phillips-style screwdriver).

3.Move the bus lever to the right to disconnect (unlock) the bus.

4.On the right-side adjacent module, move its bus lever to the right (unlock) to disconnect it from the module to be removed.

5.Gently slide the disconnected module forward. If you feel excessive resistance, check that the module has been disconnected from the bus and that both mounting screws have been removed (or DIN latches opened).

	NOTE	It may be necessary to rock the module slightly from front to
		back to remove it, or, in a panel-mounted system, to loosen
		the screws of adjacent modules.

6.Before installing the replacement module, be sure that the bus lever on the module to be installed, and on the right-side adjacent module are in the unlocked (fully right) position.

7.Slide the replacement module into the open slot.

8.Connect the modules together by locking (fully left) the bus levers on the replacement module and the right-side adjacent module.

9.Replace the mounting screws (or snap the module onto the DIN rail).

Publication 1769-IN067B-EN-P - September 2005

8 Compact I/O 1769-IF8 Analog Input Module

Module Spare/Replacement Parts

• Terminal block, catalog number 1769-RTBN18 (1 per kit)

Field Wiring Connections

Grounding the Module

This product is intended to be mounted to a well-grounded mounting surface such as a metal panel. Additional grounding connections from the module’s mounting tabs or DIN rail (if used), are not required unless the mounting surface cannot be grounded. Refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1, for additional information.

System Wiring Guidelines

Consider the following when wiring your system:

•All module commons (ANLG COM) are connected in the analog module. The analog common (ANLG COM) is not connected to earth ground inside the module.

•Do not use the analog module’s NC terminals as connection points.

•Channels are not isolated from each other.

•Use Belden™ 8761, or equivalent, shielded wire.

•Under normal conditions, the drain wire and shield junction must be connected to earth ground via a panel or DIN rail mounting screw at the analog I/O module end. Keep the shield connection to ground as short as possible.(1)

•To ensure optimum accuracy, limit overall cable impedance by keeping your cable as short as possible. Locate the I/O system as close to your sensors or actuators as your application will permit.

•If multiple power supplies are used with analog inputs, the power supply commons must be connected.

(1)In environments where high-frequency noise may be present, it may be necessary to directly ground cable shields to earth at the module end and via a 0.1µF capacitor at the sensor end.

Publication 1769-IN067B-EN-P - September 2005

Compact I/O 1769-IF8 Analog Input Module 9

•The 1769-IF8 module does not provide loop power for analog inputs. Use a power supply that matches the input transmitter specifications.

•Differential analog inputs are more immune to noise than single-ended analog inputs.

•Voltages on Vin+, V/Iin-, and Iin+ of the 1769-IF8 module must be within ±10V dc of analog common.

	ATTENTION			Be careful when stripping wires. Wire fragments that fall into a
				module could cause damage at power up. Once wiring is
				complete, ensure the module is free of all metal fragments.

Wiring Differential Inputs
	Belden 8761 cable (or equivalent)		analog source
	–			–
V in 0+	+	V/I in 4-	V in 4+	+
V/I in 0-
I in 0+		ANLG Com	I in 4+
ANLG Com
V in 1+		V/I in 5-	V in 5+
V/I in 1-
I in 1+	earth ground the	ANLG Com	I in 5+
ANLG Com
V in 2+	shield locally at	V/I in 6-	V in 6+
V/I in 2-	the module
I in 2+		ANLG Com	I in 6+
ANLG Com
V in 3+		V/I in 7-	V in 7+
V/I in 3-			I in 7+
I in 3+
ANLG Com		ANLG Com	NC
NC		NC
NC

Publication 1769-IN067B-EN-P - September 2005

10 Compact I/O 1769-IF8 Analog Input Module

Wiring Single-Ended Sensor/Transmitter Types

	Sensor/Trans +				1769-IF8 Terminal Block
	mitter	-		Current	V	in	0 +
	Supply(1)		Transmitter		V/I	in	0	-
			+	Signal	I in 0 +
					ANLG Com
					V	in	1 +
				Voltage	V/I	in	1	-
				Transmitter	I in 1 +
			+ Ground Signal		ANLG Com
					V	in	2 +
					V/I	in	2	-
				Voltage	I in 2 +
			+	Transmitter	ANLG Com
				Ground Signal	V	in	3 +
					V/I	in	3	-
					I in 3 +
					ANLG Com
					NC
1	The sensor power supply				NC
	must be rated Class 2.

Wiring for channels 4-7 are identical.

Wiring Mixed Transmitter Types

Single-ended			Signal	1769-IF8 Terminal Block
	Voltage			V in 0 +
Transmitter				V/I in 0 -
–	+			I in 0 +
Differential			+Signal	ANLG Com
				V in 1 +
	Voltage		–	V/I in 1 -
Transmitter				I in 1 +
– Supply		+		ANLG Com
			–	V in 2 +
Differential				V/I in 2 -
			Signal	I in 2 +
	Current		+
				ANLG Com
Transmitter				V in 3 +
– Supply		+
				V/I in 3 -
				I in 3 +
			Signal	ANLG Com
	2-Wire			NC
	Current		+	NC
Transmitter

Sensor/	+				The sensor power supply
Transmitter			1
Supply(1)	–				must be rated Class 2.

Wiring for channels 4-7 are identical.

Publication 1769-IN067B-EN-P - September 2005