Allen-Bradley ControlLogix 1756-IF6CIS User manual

Publication 1756-IN579A-EN-P - March 2003
Installation Instructions
ControlLogix™
Sourcing Current Loop Input Module
Catalog Number 1756-IF6CIS
Obtain a User Manual
This product also has a user manual (pub. no. 1756-UM009). To view
it, visit www.ab.com/manuals or www.theautomationbookstore.com.
To purchase a manual, you can:
·contact your distributor or Rockwell Automation representative
·visit www.theautomationbookstore.com and place an order
·call 800.963.9548 (USA/Canada) or 001.320.725.1574 (outside
USA/Canada)
To: See page:
Obtain a User Manual 1
Identify the Module Components 4
Note the Power Requirements 5
Install the Module 6
Key the Module and Removable Terminal Block/Interface Module 7
Wire the Module 11
Assemble the Removable Terminal Block and the Housing 14
Install the Removable Terminal Block onto the Module 14
Check the Indicators 15
Remove the Removable Terminal Block from the Module 16
Remove the Module 16
See Specifications 17
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2ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
ControlLogix is a trademark of Rockwell Automation, Inc.
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 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:
!
WARNING
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.
ATTENTION
!
Identifies information about practices or circumstances that can lead to
personal injury or death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for successful application and
understanding of the product.

ControlLogix™ Sourcing Current Loop Input Module 3
Publication 1756-IN579A-EN-P - March 2003
Environment and Enclosure
Prevent Electrostatic Discharge
ATTENTION
!
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 "open type" equipment. It must be
mounted within an enclosure 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.
NOTE: 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.
ATTENTION
!
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.
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4ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
Removal and Insertion Under Power
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector. Worn contacts
may create electrical resistance that can affect module operation.
Identify the Module Components
You received the following components with your order:
·1756-IF6CIS module
·Removable Terminal Block (RTB) door label
If you did not receive these components, contact your local
distributor Rockwell Automation sales office.
This module mounts in a 1756 chassis and uses a separately-ordered
RTB or a Bulletin 1492 Interface Module (IFM)(1) to connect all
field-side wiring. This module uses one of the following RTBs:
·1756-TBNH 20 position NEMA RTB
·1756-TBSH 20 position Spring Clamp RTB
!
WARNING When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause
an explosion in hazardous location installations.
(1) The Bulletin 1492 IFM may not be used in any application that requires agency certification of the
ControlLogix system. Use of the IFM violates the UL, CSA and FM certifications of this product.

ControlLogix™ Sourcing Current Loop Input Module 5
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Use an extended-depth cover (1756-TBE) for applications with heavy
gauge wiring or requiring additional routing space. When using an
IFM, consult the documentation that came with it to connect wiring.
Note the Power Requirements
This module receives power from the 1756 chasis power supply and
requires 2 sources of power from the backplane:
·250mA at 5.1V dc
·275mA at 24V dc
Add this current/power value (7.9W) to the requirements of all other
modules in the chassis to prevent overloading the power supply.
IMPORTANT Before you install your module, you should:
·install and ground a 1756 chassis and power supply.
·order and receive an RTB or IFM, and its
components, for your application.
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6ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
Install the Module
You can install or remove the module while chassis power is applied.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contacts on both the module and its mating connector. Worn contacts
may create electrical resistance that can affect module operation.
1. Align the circuit board with the top and bottom chassis guides.
2. Slide the module into chassis until module locking tabs click.
!
WARNING When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause
an explosion in hazardous location installations.
20861–M
Printed
Circuit
Board
Locking tab

ControlLogix™ Sourcing Current Loop Input Module 7
Publication 1756-IN579A-EN-P - March 2003
Key the Module and Removable Terminal Block/Interface Module
Use the wedge-shaped keying tabs and U-shaped keying bands to
prevent connecting the wrong wires to your module.
Key positions on the module that correspond to unkeyed positions
on the RTB. For example, if you key the first position on the module,
leave the first position on the RTB unkeyed.
1. To key the module, insert the U-shaped band, as shown.
2. Push the band until it snaps in place.
3. To key the RTB or IFM, insert the wedge-shaped tab with
rounded edge first, as shown.
4. Push the tab until it stops.
Reposition the tabs to rekey future module applications.
20850–M
U-shape
d bands
20851–M
Wedge-shaped tab
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8ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
Wire the Removable Terminal Block
Wire the RTB with a 5/16 inch (8mm) maximum flat-bladed
screwdriver before installing it onto the module.
Be sure that power is removed or the area is nonhazardous before
proceeding.
Shielded cable is required when using this module.We recommend
using Belden 8761 cable to wire the RTB. The RTB terminations can
accommodate #22 - 14 AWG shielded wire.
Connect grounded end of the cable
1. Prepare one end of the cable for grounding.
!
WARNING 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.
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

ControlLogix™ Sourcing Current Loop Input Module 9
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2. Ground at an earth ground on the chassis as shown below.
3. Connect the insulated wires to the RTB.
Connect ungrounded end of the cable
1. Prepare the non-grounded end of the cable.
20918-M
Connect the drain wire to a
chassis mounting tab.
Use any chassis mounting tab
that is designated as a functional
earth ground terminal. This
symbol appears near the tab.
Chassis mounting tab
Drain wire with ground lug
4M or 5M (#10 or #12)
phillips screw and star
washer (or SEM screw)
4M or 5M (#10 or
#12) star washer
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 foil shield and drain wire
back to the cable casing and
apply shrink wrap, exposing
only the insulated wires.
43182
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10 ControlLogix™ Sourcing Current Loop Input Module
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2. Connect the insulated wires to the field device.
20863–M
Spring Clamp RTB
A. Strip 7/16 inch (11mm) maximum
length of wire.
B. Insert the screwdriver into the
inner hole of the RTB.
C. Insert the wire into the open terminal
and remove the screwdriver.
NEMA Screw RTB
A. Strip 5/16 inch (8mm) maximum length
of wire.
B. Turn the terminal screw counterclockwise.
C. Wrap wire around the terminal.
D. Turn the terminal screw clockwise.
42516

ControlLogix™ Sourcing Current Loop Input Module 11
Publication 1756-IN579A-EN-P - March 2003
Wire the Module
You can only connect wiring to your module through an RTB or IFM.
The examples below show how to wire the module.
Figure 1 1756-IF6CIS – 2-wire transmitter connected to the module
and the module providing 24V dc loop power
+
–
1
2
3
4
56
78
910
1112
1314
1516
1718
1920
VOUT-1
IN-1/I
RTN-1
VOUT-3
IN-3/I
RTN-3
Not used
VOUT-5
IN-5/I
RTN-5
VOUT-0
IN-0/I
RTN-0
VOUT-2
IN-2/I
RTN-2
Not used
VOUT-4
IN-4/I
RTN-4
2-Wire
Transmitter
43469
Shield ground
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12 ControlLogix™ Sourcing Current Loop Input Module
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Figure 2 1756-IF6CIS – 4-wire transmitter connected to the module
and an external, user-provided power supply providing 24V dc
loop power
+
–
1
2
3
4
56
78
910
1112
1314
1516
1718
1920
VOUT-1
IN-1/I
RTN-1
VOUT-3
IN-3/I
RTN-3
Not used
VOUT-5
IN-5/I
RTN-5
VOUT-0
IN-0/I
RTN-0
VOUT-2
IN-2/I
RTN-2
Not used
VOUT-4
IN-4/I
RTN-4
4-Wire
Transmitter
43470
24V dc
Shield ground
+
–
NOTE: If separate power sources are used, do not exceed the specified
isolation voltage.

ControlLogix™ Sourcing Current Loop Input Module 13
Publication 1756-IN579A-EN-P - March 2003
Figure 3 1756-IF6CIS – 2-wire transmitter connected to the module
and an external, user-provided power supply providing 24V dc
loop power
After completing field-side wiring, secure the wires in the strain relief
area with a cable-tie.
+–
1
2
3
4
56
78
910
1112
1314
1516
1718
1920
VOUT-1
IN-1/I
RTN-1
VOUT-3
IN-3/I
RTN-3
Not used
VOUT-5
IN-5/I
RTN-5
VOUT-0
IN-0/I
RTN-0
VOUT-2
IN-2/I
RTN-2
Not used
VOUT-4
IN-4/I
RTN-4
2-Wire
Transmitter
43471
24V dc
Shield ground
NOTE: If separate power sources are used, do not exceed the specified
isolation voltage.
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14 ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
Assemble the Removable Terminal Block and the Housing
Install the Removable Terminal Block onto the Module
Before installing the RTB, make certain:
·power is removed or the area is nonhazardous.
·field-side wiring of the RTB has been completed.
·the RTB housing is snapped in place on the RTB.
·the RTB housing is closed.
·the locking tab at the top of the module is unlocked.
!
WARNING 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.
20852-M
Groove
Groove
Side edge of the RTB
Side edge of the RTB
Strain relief area
1. Align the grooves at the bottom of the housing with the side edges of the RTB.
2. Slide the RTB into the housing until it snaps into place.
20853–M 20854–M
Module
guide
RTB guides
Locking tab
1. Align the side and top, bottom guides. 2. Press quickly and evenly to seat the RTB
until the latches snap into place.
3. Slide the locking tab down.

ControlLogix™ Sourcing Current Loop Input Module 15
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Check the Indicators
The indicators show CAL status (green) and a bi-colored LED for
module "OK" (red/green).
During power up, an indicator test is done and the following occurs:
·The "OK" indicator turns red for 1 second and then turns to
flashing green if it has passed the self-test.
This completes installation of the module. Use the following
information to remove the module, if necessary.
LED
indicators:
This
display:
Means: Take this action:
OK Steady green
light
The inputs are being multicast
and in normal operating state.
None
OK Flashing
green light
1. The module has passed
internal diagnostics but is
not actively controlled.
2 . The controller is in Program
mode.
1. Configure the module
with RSLogix 5000.
2. If ready, switch the
controller to Run mode.
OK Flashing red
light
Previously established
communication has timed out.
Check controller and chassis
communication
OK Steady red
light
The module must be replaced. Replace the module.
CAL Flashing
green light
The module is in calibration
mode.
None
20962-M
ANALOG INPUT
CAL
OK
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16 ControlLogix™ Sourcing Current Loop Input Module
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Remove the Removable Terminal Block from the Module
If you need to remove the module, you must remove the RTB first.
Before removing the module, you must remove the RTB.
Remove the Module
!
WARNING When you insert or remove the module while backplane
power is on, 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.
20855–M
2. Open the RTB door and pull
the RTB off the module.
1. Unlock the locking tab at
the top of the module.
42517
1. Push in top and bottom locking tabs. 2. Pull module out of the chassis.
20856–M 20857–M

ControlLogix™ Sourcing Current Loop Input Module 17
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1756-IF6CIS Specifications
Number of Inputs 6 points isolated
Module Location ControlLogix Chassis
Backplane Current 250 mA @ 5.1V dc & 275 mA @ 24V dc
Backplane Power 7.9 Watts
Max. Module Power Dissipation 5.1 Watts @ 60° C
Thermal Dissipation 17.4 BTU/hr
Input Range 0-21mA (Over-range indication when exceeded)
Resolution 0-21mA 0.34mA/bit 16bit (15.9bits)
Data Format Integer Mode (Left justified, 2's complement)
Floating point IEEE32 bit
Input Impedance Approximately 215 ohm
Sourcing Voltage 20V dc minimum
30V dc maximum
Sourcing Current Current limited to <30mA maximum
Open Circuit Detection Time Zero reading within 5 seconds
Overvoltage Protection 30V AC/DC with PTC and Sense Resistor
Normal Mode Noise Rejection(1) 60dB at 60Hz
Common Mode Noise Rejection 120dB at 60Hz, 100 dB at 50Hz
Channel Bandwidth(1) 3-262Hz (-3dB)
Settling Time to % of Full Scale(1) 5% of FS: <80 milliseconds
Calibrated Accuracy Worst Case Better than 0.1% of range @25°C
Calibrated Accuracy Typical 0.025% of full range @25°C
Calibration Interval 1 year
Input offset drift with temperature 200nA/°C typical
Gain Drift with Temperature 40 ppm/°C typical
70 ppm/°C maximum)
Module Error over Full Temp Range 0.4% of Range
Module Scan Time for all Channels
(Sample Rate)
25 milliseconds minimum floating point
10 milliseconds minimum integer
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18 ControlLogix™ Sourcing Current Loop Input Module
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Isolation Voltage
Channel to channel
User to system
Optically Isolated, Transformer Coupled
250V
100% tested at 1900 Vdc for 2 s
250V
100% tested at 1900 Vdc for 2 s
Module Conversion Method Sigma-Delta
RTB Screw Torque (NEMA clamp) 7-9 inch-lbs (.8 to 1Nm)
Module Keying (Backplane) Electronic
RTB Keying User defined
RTB and Housing 20 Position RTB (1756-TBNH or TBSH)(2)
Conductors
Wire Size
Category
#22 to #14 AWG (0.324 to 2.08 sq. mm) stranded(2)
3/64 inch (1.2mm) insulation maximum
2(3), (4)
Screwdriver Blade Width for RTB 5/16 inch (8mm) maximum
Environmental Conditions
Operating Temperature 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)
Storage Temperature IEC 60068-2-1 (Test Ab, Un-packaged Non-operating 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)
Relative Humidity IEC 60068-2-30 (Test Db, Un-packaged Non-operating
Damp Heat):
5 to 95% non-condensing
Vibration IEC 60068-2-6 (Test Fc, Operating):
2g @ 10-500Hz
Operating Shock IEC 60068-2-27 (Test Ea, Unpackaged Shock):
30g
Non-operating Shock IEC 60068-2-27 (Test Ea, Unpackaged Shock):
50g
Emissions CISPR 11:
Group 1, Class A

ControlLogix™ Sourcing Current Loop Input Module 19
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ESD Immunity IEC 61000-4-2:
6kV contact discharges
8kV air discharges
Radiated RF Immunity IEC 61000-4-3:
10V/m with 1kHz sine-wave 80%AM from 30MHz to
2000MHz
10V/m with 200Hz 50% Pulse 100%AM at 900Mhz
EFT/B Immunity IEC 61000-4-4:
±2kV at 5kHz on signal ports
Surge Transient Immunity IEC 61000-4-5:
±2kV line-earth(CM) on shielded ports
Conducted RF Immunity IEC 61000-4-6:
10Vrms with 1kHz sine-wave 80%AM from 150kHz to
80MHz
Enclosure Type Rating None (open-style)
Certifications: (when product is
marked)
UL UL Listed Industrial Control Equipment
CSA CSA Certified Process Control Equipment
CSA CSA Certified Process Control Equipment for
Class I, Division 2 Group A,B,C,D Hazardous
Locations
CE(5) European Union 89/336/EEC EMC Directive,
compliant with:
EN 50082-2; Industrial Immunity
EN 61326; Meas./Control/Lab., Industrial
Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
C-Tick(5) Australian Radiocommunications Act,
compliant with:
AS/NZS CISPR 11; Industrial Emissions
(1) These specifications are notch filter dependant.
(2) Maximum wire size will require extended housing - 1756-TBE.
(3) Use this conductor category information for planning conductor routing as described in the system
level installation manual.
(4) Refer to publication 1770-4.1 Industrial Automation Wiring and Grounding Guidelines.
(5) See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and
other certification details.
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