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
Allen-Bradley Drives

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.
Allen-Bradley Drives

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
Publication 1756-IN579A-EN-P - March 2003
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.
Allen-Bradley Drives

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
Allen-Bradley Drives

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
Publication 1756-IN579A-EN-P - March 2003
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
Allen-Bradley Drives

10 ControlLogix™ Sourcing Current Loop Input Module
Publication 1756-IN579A-EN-P - March 2003
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