Allen-Bradley 1746-IA4 Installation Instructions Manual

Allen-Bradley 1746-IA4 Installation Instructions Manual

Digital i/o modules

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Digital I/O Modules
Input Module Catalog Numbers: 1746-IA4, 1746-IA8, 1746-IA16, 1746-IB8,
1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4, 1746-IM8,
1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16
Output Module Catalog Numbers: 1746-OA8, 1746-OA16, 1746-OAP12,
1746-OB8, 1746-OB6EI, 1746-OB16, 1746-OB16E, 1746-OBP8, 1746-OBP16,
1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4, 1746-OW8,
1746-OW16, 1746-OX8
Combination Input/Output Module Catalog Numbers: 1746-IO4, 1746-IO8,
1746-IO12, 1746-IO12DC
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Installation Instructions
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Publication 1746-IN027C-EN-P - August 2008

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Summary of Contents for Allen-Bradley 1746-IA4

  • Page 1: Table Of Contents

    Installation Instructions Digital I/O Modules Input Module Catalog Numbers: 1746-IA4, 1746-IA8, 1746-IA16, 1746-IB8, 1746-IB16, 1746-IC16, 1746-IG16, 1746-IH16, 1746-IM4, 1746-IM8, 1746-IM16, 1746-IN16, 1746-ITB16, 1746-ITV16, 1746-IV8, 1746-IV16 Output Module Catalog Numbers: 1746-OA8, 1746-OA16, 1746-OAP12, 1746-OB8, 1746-OB6EI, 1746-OB16, 1746-OB16E, 1746-OBP8, 1746-OBP16, 1746-OG16, 1746-OV8, 1746-OV16, 1746-OVP16, 1746-OW4, 1746-OW8,...
  • Page 2 Digital I/O Modules Processor Operation in Case of Blown Fuse - Processor Faults Recovery From Blown Fuse/Processor Fault/Processor Shutdown Replacement Fuse Recommendations Replace Fuses Electronically Protected Modules (1746-OB6EI and 1746-OB16E) Auto Reset Operation Short Circuit/Overload Current Diagnostics Recovery from Channel Shutdown Wiring Diagrams Labeling for SLC/PLC Systems Input Modules - ac...
  • Page 3: Important User Information

    Digital I/O Modules 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://literature.rockwellautomation.com) describes some important differences between solid state equipment and hard-wired electromechanical devices.
  • Page 4: Overview

    Digital I/O Modules Overview In addition to providing the module’s electrical specifications, this document tells you how to: • install the module into a chassis. • wire the module’s terminal block. • install the Octal Filter Label. Hazardous Location Considerations This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or nonhazardous locations only.
  • Page 5: Environnements Dangereux

    Digital I/O Modules Environnements Dangereux Cet équipement est conçu pour être utilisé dans des environnements de Classe I, Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante s’applique à une utilisation dans des environnements dangereux. DANGER D’EXPLOSION WARNING La substitution de composants peut rendre cet équipement impropre à...
  • Page 6: Octal Label Kit Installation (For Plc Processors Only)

    The octal label kit consists of an octal filter label and a door label. Use these octal labels to replace the decimal labels that are attached to the I/O modules. The octal label kit can be obtained from your Allen-Bradley distributor. The octal kit is ordered based on the catalog number of the I/O module.
  • Page 7: Apply The Octal Filter Label

    Digital I/O Modules ATTENTION Do not touch or remove the terminal block when the SLC 500 system is powered. Contact with ac line potential may cause injury to personnel. Apply the Octal Filter Label 1. Remove the octal filter label from its paper carrier. 2.
  • Page 8: Fuse Protection And Blown Fuse Diagnostics

    Digital I/O Modules Installing Octal Labels Octal Filter Label Module Color Bar Upper Retaining Screw Max Torque Beveled Edge OCTAL = 0.6 Nm (5.3 lb-in) Removable Terminal Block Terminal Wiring Max 2mm (14 AWG). Max 2 wires per terminal. Max torque: 0.9 Nm (8 lb-in). 1746-xxxx (OCTAL) 1746-xxxx Octal Door Label...
  • Page 9: Fuse Protection (1746-Obp16 And 1746-Ovp16 Modules)

    Digital I/O Modules Fuse Protection (1746-OBP16 and 1746-OVP16 modules) The fuse on the 1746-OBP16 and 1746-OVP16 modules (shown on page 10) provides short-circuit protection for 13 mm (16 AWG) or larger wiring to external loads. In the event of a short circuit on an output channel, it is likely that the transistor associated with that channel will be damaged.
  • Page 10 Digital I/O Modules Location of Jumpers and Fuses for 1746-OBP16 and 1746-OVP16 Modules Location for 1746-OBP16 Fuse (F1) Jumper for Processor Left Side View Notification (JP1) Location for 1746-OVP16 Fuse (F1) WHEN FUSE OPENS PROCESSOR OUTPUT CONTINUES Blown Fuse LED Indicator PROCESSOR FAULTS...
  • Page 11: Processor Operation In Case Of Blown Fuse - Processor Continues

    Digital I/O Modules Location of Jumpers and Fuses for 1746-OAP12 Module Left Side View Jumper for Processor Notification (JP1) WHEN FUSE OPENS OUTPUT PROCESSOR CONTINUES Blown Fuse LED PROCESSOR Indicator FAULTS REPLACEMENT FUSE: SAN-O HQ 6.3A A-B CAT. NO. 1746-F9 Jumper Settings and Fuse Replacement Information...
  • Page 12: Processor Operation In Case Of Blown Fuse - Processor Faults

    Digital I/O Modules JP1 Factory Set Position (no processor notification) JP1 is in Factory Set position. There is no processor notification for blown fuse. 1746-OBP16 and 1746-OVP16 1746-OAP12 Processor Operation in Case of Blown Fuse - Processor Faults The Processor Fault position for JP1 is shown on the following page. For this JP1 configuration, the processor generates a nonrecoverable error for all SLC 500 processors.
  • Page 13 Digital I/O Modules JP1 in Processor Fault Notification Position JP1 is in processor fault position. 1746-OBP16 and 1746-OVP16 Processor is notified when fuse is blown. 1746-OAP12 When using SLC 5/02 processor and later processors, a User-fault routine IMPORTANT cannot be used to clear the major fault bit. For 1746-OBP16 and 1746-OVP16 modules, all outputs on the module are OFF ATTENTION if the fuse blows.
  • Page 14: Recovery From Blown Fuse/Processor Fault/Processor Shutdown

    Digital I/O Modules This table defines operation of all SLC 500 processors in the case of a blown fuse in 1746-OBP16, 1746-OVP16, and 1746-OAP12 modules. Processor Operation After a Blown Fuse (1746-OBP16, 1746-OVP16, and 1746-OAP12 modules) JP1 Set to JP1 Set to Processor Continues Processor Faults No error.
  • Page 15: Replace Fuses

    Digital I/O Modules • 1746-OAP12 module - Use SAN-O HQ 6.3A for replacement. This fuse is required to maintain UL/CSA rating. Replacement Fuse Kit is catalog number 1746-F9 (five fuses per kit). Replace Fuses ATTENTION Never install, remove, or wire modules with power applied to chassis. 1.
  • Page 16: Electronically Protected Modules (1746-Ob6Ei And 1746-Ob16E)

    Digital I/O Modules Electronically Protected Modules (1746-OB6EI and 1746-OB16E) The electronic protection of the 1746-OB6EI and 1746-OB16E modules have been designed to provide protection for the modules from short circuit and overload current conditions. The protection is based on a thermal cut-out principle. In the event of a short circuit or overload current condition on an output channel, that channel will limit current within milliseconds after its thermal cut-out temperature has been reached.
  • Page 17: Auto Reset Operation

    Digital I/O Modules Auto Reset Operation The 1746-OB6EI and 1746-OB16E modules perform auto-reset under IMPORTANT overload conditions. When an output channel overload occurs, that channel will limit current within milliseconds after its thermal cut-out temperature has been reached. While in current limit, the output channel can cool below the thermal cut-out temperature allowing the module to auto-reset and resume control of the output channel as directed by the processor until the thermal cut-out temperature is again reached.
  • Page 18: Wiring Diagrams

    A separate octal conversion kit can be ordered, to allow you to convert your module to the octal system. You can order the octal label kit from your Allen-Bradley Distributor. The octal kit is ordered based on the catalog number of the I/O module.
  • Page 19: Input Modules - Ac

    Digital I/O Modules Input Modules - ac Wiring Diagrams (1746-IA4, 1746-IA8, 1746-IA16) 1746-IA8 1746-IA4 100/120V ac 100/120V ac IN 0 USED IN 1 USED IN 2 USED IN 3 USED 100/120V ac IN 0 IN 4 IN 1 IN 5...
  • Page 20 Digital I/O Modules Wiring Diagrams (1746-IM4, 1746-IM8, 1746-IM16) 1746-IM4 1746-IM8 200/240V ac 200/240V ac USED IN 0 IN 1 USED IN 2 USED IN 3 USED 200/240V ac IN 0 IN 4 IN 1 IN 5 200/240V ac IN 2 IN 6 IN 3 IN 7...
  • Page 21: Input Modules - Dc

    Digital I/O Modules Input Modules - dc Wiring Diagram (1746-IN16) 1746-IN16 24V ac/dc Sinking L1 or +DC IN 0 IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 V ac/dc IN 7 IN 8 IN 9 IN 10 IN 1 1 IN 12 IN 13...
  • Page 22 Digital I/O Modules Wiring Diagram (1746-IV8, 1746-IV16, 1746-ITV16) 1746-IV8 1746-IV16, 1746-ITV16 24V dc Sourcing 24V dc Sourcing IN 0 IN 0 IN 1 IN 2 IN 1 IN 3 IN 4 IN 2 IN 5 IN 6 IN 3 24V dc IN 7 24V dc IN 8...
  • Page 23: Output Modules - Ac

    Digital I/O Modules Output Modules - ac Wiring Diagrams (1746-OA8, 1746-OA16) 1746-OA8 1746-OA16 100...240V ac Triac Output 100...240V ac Triac Output VAC 1 OUT0 OUT 1 VA C 1 OUT 2 OUT 3 OUT 0 100-240V ac OUT 4 OUT 5 100-240V ac OUT 1 OUT 6...
  • Page 24: Output Modules - Dc

    Digital I/O Modules Output Modules - dc Wiring Diagrams (1746-OB6EI) 1746-OB6EI 10...30V dc Transistor Output-sourcing Channel-to-channel Isolated VDC 1 VDC 0 10-30V dc OUT 1 OUT 0 10-30V dc COM 1 COM 0 VDC 3 VDC 2 10-30V dc OUT 3 10-30V dc OUT 2 COM 3...
  • Page 25 Digital I/O Modules Wiring Diagrams (1746-OB8, 1746-OBP8, 1746-OB16, 1746-OB16E, 1746-OBP16) 1746-OB8 1746-OBP8 10...50V dc Transistor Output-sourcing 20.4...26.4V dc Transistor Output-sourcing VDC1 OUT 0 OUT 1 OUT 2 OUT 0 OUT 3 20.4-26.4V dc COM1 OUT 1 OUT 2 OUT 3 10-50V dc OUT 4 OUT 5...
  • Page 26 Digital I/O Modules Wiring Diagrams (1746-OV8, 1746-OV16, 1746-OVP16) 1746-OV8 1746-OV16, 1746-OVP16 10...50V dc Transistor 10...50V dc or 20.4...26.4V dc Transistor Output Sinking Output Sinking OUT 0 OUT 1 OUT 0 OUT 2 OUT 3 OUT 1 OUT 4 10-50V dc (OV16) OUT 5 OUT 2 OUT 6...
  • Page 27: Relay Contact Output Modules

    Digital I/O Modules Relay Contact Output Modules Wiring Diagrams (1746-OW4, 1746-OW8, 1746-OW16) 1746-OW4 1746-OW8 Relay Output Relay Output L1 or +DC L1 or +DC VAC-VDC VAC-VDC OUT 0 OUT 0 V ac/dc V ac/dc OUT 1 OUT 1 OUT 2 OUT 2 L2 or -DC L2 or -DC...
  • Page 28: Input/Output Combination Modules

    Digital I/O Modules Wiring Diagram (1746-OX8) 1746-OX8 Channel-to-channel Isolated Relay Output VAC-VDC VS0 L1 OUT 0 VS0 L2 VAC-VDC VS1 L1 OUT 1 VS1 L2 VAC-VDC VS2 VDC OUT 2 VS2 DC COM VAC±VDC VS3 VDC OUT 3 VS3 DC COM NOT USED USED VAC-VDC...
  • Page 29 Digital I/O Modules Wiring Diagram (1746-IO12) 1746-IO12 100/120V ac Input - Relay Output L1 or +DC VAC-VDC OUT 0 OUT 1 OUT 2 V ac/dc OUT 3 OUT 4 OUT 5 USED L2 or -DC USED IN 0 IN 1 IN 2 IN 3 100/120V ac...
  • Page 30: Specifications

    Digital I/O Modules Specifications General I/O Attribute Value Temperature, operating 0...60 °C (32...140 °F) Temperature, storage -40...85 °C (-40...185 °F) Operating humidity 5...95% (noncondensing) Noise immunity NEMA standard ICS 2-230 Vibration, operating Displacement 0.015 in. peak at 5...57 Hz Acceleration 2.5 g at 57...2000 Hz Shock, operating 30 g (all modules except relay contact) 10 g (relay contact modules: 1746-OW, 1746-OX, and combination I/O...
  • Page 31 Digital I/O Modules • Total Watts - the Watts per point multiplied by the number of points, plus the minimum Watts (with all points energized). Input Module Heat Dissipation Catalog Numbers Watts per Point Min Watts Total Watts 1747-IA4 0.27 0.175 1.30 1746-IA8...
  • Page 32: Input Modules - Ac

    4.60 0.133 per output point 1746-IO12DC 0.20 per input point 1.84 3.90 0.133 per output point Input Modules - ac Specifications for Input Modules 1746-IA4, 1746-IA8, and 1746-IA16 Attribute Value 1746-IA4 1746-IA8 1746-IA16 Voltage category 100/120V ac signal input Number of inputs...
  • Page 33 Digital I/O Modules Specifications for Input Modules 1746-IM4, 1746-IM8, and 1746-IM16 Attribute Value 1746-IM4 1746-IM8 1746-IM16 Voltage category 200/240V ac signal input Number of inputs Points per common Voltage, operating 170...265V ac at 47...63 Hz Backplane current consumption 5V dc 0.035 A 0.050 A 0.085 A...
  • Page 34: Input Modules - Dc

    Digital I/O Modules Input Modules - dc Specifications for Input Modules 1746-IB8, 1746-IB16, 1746-ITB16, and 1746-IC16 Attribute Value 1746-IB8 (1)(2) 1746-IB16 1746-ITB16 1746-IC16 Voltage category 24V dc signal input (sinking) 48V dc signal input (sinking) Number of inputs Points per common Voltage, operating 10...30V dc (sinking) 30...60V dc at 55 °C (131 °F) sinking...
  • Page 35 1747-UM011, for recommended wiring procedures for TTL modules. Limit cable length to 15 m (50 ft) per point for inputs in standard environments. Refer to Allen-Bradley Programmable Controller Wiring and Grounding Guidelines, publication 1770-IN041, for complete information. Specifications for Input Module 1746-IN16...
  • Page 36 Digital I/O Modules Specifications for Input Module 1746-IN16 Signal delay, max On = 15 ms Off = 15 ms On = 25 ms Off = 25 ms Off-state voltage, max 3.0V dc 3.0V ac Off-state current, max 1 mA 1 mA Input current, nom 8 mA at 24V dc 8 mA at 24V ac...
  • Page 37: Output Modules - Ac

    Digital I/O Modules Output Modules - ac Specifications for Output Modules 1746-OA8, 1746-OA16, and 1746-OAP12 Attribute Value 1746-OA8 (1)(2)(3) 1746-OA16 1746-OAP12 Voltage category 120/240V ac signal input Number of outputs Points per common Voltage, operating 85...265V ac at 47...63 Hz Backplane current 5V dc 0.185 A...
  • Page 38: Output Modules - Dc

    Digital I/O Modules Output Modules - dc Specifications for Output Modules 1746-OB8, 1746-OB16, and 1746-OB16E Attribute Value 1746-OB8 (1)(2) 1746-OB16 1746-OB16E Number of outputs Points per common Voltage category 24V dc Signal Output Voltage, operating (V dc) 10...50 (source) 10...30 (source) Backplane current 5V dc 0.135 A...
  • Page 39 Digital I/O Modules A transient pulse occurs in transistor outputs when the external dc supply ATTENTION voltage is applied to the output common terminals (for example, via the master control relay). This can occur regardless of the processor having power or not. For most applications, the energy of this pulse is not sufficient to energize the load.
  • Page 40 Digital I/O Modules Certified for Class 1, Division 2 hazardous location by CSA. Fast turn-off modules (1746-OB6EI, 1746-OBP8 series B and later, 1746-OB16E series B and later, 1746-OBP16, and 1746-OVP16) provide fast OFF delay for inductive loads. Comparative OFF delay times for 1746-OB8/1746-OV8 and fast turn-off modules;...
  • Page 41 Digital I/O Modules Specifications for Output Modules 1746-OV8, 1746-OV16, and 1746-OVP16 Attribute Value 1746-OV8 (1)(2)(3)(4) 1746-OV16 1746-OVP16 Number of outputs Points per common Voltage category 24V dc Signal Output Voltage, operating (V dc) 10...50 (sink) 20.4...26.4 (sink) Backplane 5V dc 0.135 A 0.270 A 0.250 A...
  • Page 42 Digital I/O Modules A transient pulse occurs in transistor outputs when the external dc supply ATTENTION voltage is applied to the output common terminals (for example, via the master control relay). This can occur regardless of the processor having power or not. For most applications, the energy of this pulse is not sufficient to energize the load.
  • Page 43: Relay Contact Output Modules

    Digital I/O Modules Refer to Allen-Bradley Programmable Controller Wiring and Grounding Guidelines, publication 1770-IN041, for complete information. Relay Contact Output Modules Specifications for Output Modules 1746-OW4, 1746-OW8, 1746-OW16, and 1746-OX8 Attribute Value (1)(2) (1)(2) 1746-OW4 1746-OW8 1746-OW16 1746-OX8 Number of outputs...
  • Page 44: Relay Contact Ratings

    Digital I/O Modules Relay Contact Ratings Relay Contact Rating Table for Output Modules 1746-OW4, 1746-OW8, and 1746-OW16 Voltages Volt-Amperes Amperes Amperes Continuous Make Break Make Break Volts (ac), max 1800 0.75 Volts (dc), max 0.22 Relay Contact Rating Table for Output Module 1746-OX8 Voltages Amperes Volt-Amperes...
  • Page 45 0.070 A 0.060 A Certified for Class 1, Division 2 hazardous location by CSA. See specifications for catalog numbers 1746-IA4 and 1746-OW4. Continuous Current per 1746-IO4 Module is 4.0 A. Continuous Current per 1746-IO8 Module is 8.0 A. Removable terminal block.
  • Page 46 Digital I/O Modules Notes: Publication 1746-IN027C-EN-P - August 2008...
  • Page 47 Digital I/O Modules Notes: Publication 1746-IN027C-EN-P - August 2008...
  • Page 48 Rockwell Automation distributor or sales representative. Allen-Bradley, TechConnect, Rockwell Automation, and SLC 500 are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies. Publication 1746-IN027C-EN-P - August 2008...

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