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ControlLogix Programmable Limit Switch Module
Catalog Number 1756-PLS
Use this document to install the ControlLogix™ Programmable Limit Switch module.
To:
Obtain a User Manual
This product also has a user manual (publication number 1756-UM002). 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
Allen-Bradley Auto
• call 800.963.9548 (USA/Canada) or 001.320.725.1574 (outside USA/Canada)
Installation Instructions
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Related Manuals for Allen-Bradley ControlLogix 1756-PLS
Summary of Contents for Allen-Bradley ControlLogix 1756-PLS
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Page 1: Table Of Contents
To purchase a manual, you can: • contact your distributor or Rockwell Automation representative • visit www.theautomationbookstore.com and place an order Allen-Bradley Auto • call 800.963.9548 (USA/Canada) or 001.320.725.1574 (outside USA/Canada) Publication 1756-IN594A-EN-P - November 2003... - Page 2 ControlLogix Programmable Limit Switch Module Important User Information 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.
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Page 3: Prevent Electrostatic Discharge
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. - Page 4 IP54 protection when applied in Class I, Zone 2 environments. • This equipment shall be used within its specified ratings defined by Allen-Bradley. • Provision shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 40% when applied in Class I, Zone 2 environments.
- Page 5 • If this product contains environnement de Classe batteries, they must only I, Division 2. • S’assurer que be changed in an area known to be l’environnement est Allen-Bradley Auto nonhazardous. classé non dangereux avant de changer les piles. Publication 1756-IN594A-EN-P - November 2003...
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Page 6: Use Compatible Resolver
Use Compatible Resolver This module can only be used with the following resolvers: • Allen-Bradley Resolver # 846-SJxxxx-R3-x (x=customer option) For more information on how to connect the center section to Allen-Bradley Resolver # 846-SJxxxx-R3-X, see . Identify the Module Components You received the following components with your order: •... -
Page 7: Note The Power Requirements
1. Align the center circuit board with the top and bottom chassis guides. Printed Circuit Board 41633 2. Slide the module into chassis until module locking tabs click. Locking tab Allen-Bradley Auto 41634 Publication 1756-IN594A-EN-P - November 2003... -
Page 8: Key The Module And Removable Terminal Block/Interface Module
ControlLogix Programmable Limit Switch Module 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. -
Page 9: Wire The Removable Terminal Block
20104-M 2. Ground the drain wire. We recommend grounding the drain wire at the field device as shown below. Drain wire Field Device Allen-Bradley Auto 43183 3. Connect the insulated wires to the field device. Publication 1756-IN594A-EN-P - November 2003... - Page 10 ControlLogix Programmable Limit Switch Module If you cannot ground at the field device, follow these steps: 1. Prepare one end of the cable as shown in step 1 on page 9. 2. Ground at an earth ground on the chassis as shown below.We recommend grounding the drain wire at the field-side.
- Page 11 C. Insert the wire into the open terminal and remove the screwdriver. 20863–M 42516 Wiring Terminations You must wire each section separately. The diagram below shows all 3 sections. Resolver Allen-Bradley Auto Publication 1756-IN594A-EN-P - November 2003...
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Page 12: Wire The Resolver Module
ControlLogix Programmable Limit Switch Module Wire the Resolver Module Use Table 1 and the diagram below it to wire the 1756-PLS resolver module. Table 1 Connections from Allen-Bradley Resolvers to the 1756-PLS Resolver Module RTB Terminal 846-SJxNxCG-R3 845-CA-E-25 845-CA-F-25 Resolver... -
Page 13: Wire The I/O Modules
DC PWR 0- 3 DC COM 0-3 10- 30V dc OUTPUT 4 INPUT 4 OUTPUT 5 INPUT 5 INPUT 6 OUTPUT 6 INPUT 7 OUTPUT 7 DC PWR 4- 7 DC COM 4- 7 Allen-Bradley Auto Publication 1756-IN594A-EN-P - November 2003... - Page 14 ControlLogix Programmable Limit Switch Module The example diagram below shows solenoid connected to an output on the right section I/O module. Rig ht Section I/O Module OUTPUT 8 INPUT 8 OUTPUT 9 INPUT 9 INPUT 10 OUTPUT 10 OUTPUT 11 INPUT 11 DC PWR 8- 11 DC COM 8-11...
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Page 15: Assemble The Removable Terminal Block And The Housing
1. Align the RTB and module guides. 2. Press quickly and evenly to seat the RTB until the latches snap into place. Module guide Locking tab Allen-Bradley Auto RTB guides 41656 41657 3. Slide the locking tab down. Publication 1756-IN594A-EN-P - November 2003... -
Page 16: Check The Status Indicators
ControlLogix Programmable Limit Switch Module Check the Status Indicators The 1756-PLS module uses the following status indicators. Indicator for Left Indicator for Indicator for Right Slot I/O Module Resolver Module Slot I/O Module PROG. LIMIT SWITCH PROG. LIMIT SWITCH PROG. LIMIT SWITCH 13 14 15 5 6 7 5 6 7... -
Page 17: Remove The Removable Terminal Block From The Module
2. Open the RTB door and pull the top of the module. the RTB off the module. 41641 Remove the Module 1. Push in top and bottom locking tabs. 2. Pull module out of the chassis. 41637 41638 Allen-Bradley Auto Publication 1756-IN594A-EN-P - November 2003... -
Page 18: 1756-Pls Specifications
ControlLogix Programmable Limit Switch Module 1756-PLS Specifications General Module Location 3 contiguous slots of a 1756 ControlLogix chassis Module Configuration PLS left section - 2 groups of 4 outputs and 4 inputs each PLS center section - resolver interface and I/O control PLS right section - 2 groups of 4 outputs and 4 inputs each Backplane Current 1A @ 5.1V dc &... -
Page 19: Publication 1756-In594A-En-P - November
ControlLogix Programmable Limit Switch Module Resolver Section Specifications Resolver Location Center section Compatible Resolver Allen-Bradley resolver 846-SJxxxx-R3-x (x = customer options) Resolver Interface 2Vrms, reference output (Differential pair) 2Vrms, sine and cosine inputs (2 Differential pairs) Reference Voltage 2Vrms + 20%... - Page 20 ControlLogix Programmable Limit Switch Module On-State Current Maximum 10mA Minimum Off-State Current 1.5mA maximum Input Impedance @ 24V dc 3.3kΩ maximum Input Delay Time (nominal voltage) Off to On <15µs @ 30°C - Typical <150µs @ 60°C - Maximum On to Off <30µs @ 30°C - Typical <200µs @ 60°C - Maximum Reverse Polarity Protection...
- Page 21 <4A (Overload) Reverse Polarity Protection Yes (Current limited) If wired incorrectly, outputs may be permanently disabled. Isolation Voltage Field wired circuits to 125V continuous system backplane Tested to 2546V dc for 60 seconds. Allen-Bradley Auto Publication 1756-IN594A-EN-P - November 2003...
- Page 22 ControlLogix Programmable Limit Switch Module 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...
- Page 23 Use this Conductor Category information for planning conductor routing. Refer to Publication 1770-4.1, Industrial Automation Wiring and Grounding Guidelines. See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification details. Allen-Bradley Auto Publication 1756-IN594A-EN-P - November 2003...
- Page 24 Rockwell Automation Support Rockwell Automation provides technical information on the web to assist you in using our products. At http://support.rockwellautomation.com, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.
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