1771-2.182, 1771 Digital I/O AC Input and output Modules ...

1 Product DataPublication 1771 - July 19961771 Digital I/OAC Input and output ModulesInterfaces your ON/OFF devices to Allen Bradley programmablecontrollers within the 1771 Universal I/O structure. Allen-Bradleydigital ac I/O Modules interface to ON/OFF devices such as limitswitches, pushbuttons, motor starters, pilot lights, and Modules are compatible with all current Allen-Bradleyprogrammable controllers. This saves on spare parts, systemengineering, inventory, and training high power operations. The ac solid-state family of digitalI/O Modules meets requirements for applications from 10-276V Modules exhibit long life (20 million to over 100 millionoperations).Provides system protection and troubleshooting aids. The ac I/Omodules include electrical-optical isolation and filter circuits.

2 Tohelp you troubleshoot your system, module indicators are providedto show Input or output status. AC/DC Input module (Cat. No. 1771 IA Series C, and 1771 IA2) 12.. AC/DC Input module (Cat. No. 1771 IAD Series D) 14.. AC Input module (Cat. No. 1771 IAN) 16.. Isolated AC/DC Input module (Cat. ID) 18.. Isolated AC/DC Input module (Cat. No. 1771 ID01) 20.. Isolated AC/DC Input module (Cat. No 1771 ID16) 22.. AC/DC Input module (Cat. No. 1771 IM) 24.. AC/DC Input module (Cat. No. 1771 IMD Series B) 26.. AC Input module (Cat. No. 1771 IN) 28.. AC/DC Input module (Cat. No. 1771 IND Series B) 30.. AC output module (Cat. No. 1771 OA Series B) 32.. AC output module (Cat. No. 1771 OAD Series C) 34.. AC output module (Cat.)

3 No. 1771 OAN) 36.. Isolated AC output module (Cat. No. 1771 OD Series C) 38.. Isolated AC output module (Cat. No. 1771 OD16) 40.. Isolated AC output module (Cat. No. 1771 ODD) 42.. Isolated AC output module (Cat. No. 1771 ODZ) 44.. AC output module (Cat. No. 1771 OM) 46.. AC output module (Cat. No. 1771 OMD Series B) 48.. AC output module (Cat. No. 1771 ON) 50.. AC output module (Cat. No. 1771 OND Series B) 52.. Protected AC output module (Cat. No. 1771 OP) 54.. Isolated AC output module (Cat. No. 1771 OR Series B) 56.. Support Services 59.. Technical Support 59.. Engineering and Field Services 59.. Technical Training 59.. Repair and Exchange Services 59.. Table of Contents 1771 Digital I/O AC Input and output Modules2 OverviewPublication 1771 - July 1996 Allen-Bradley offers a Digital I/O product line consisting of threefamilies:FamilyDocumentDigital AC Input and output DC Input and output Relay Contact output CompatibilityThe individual specification sheets included in this document showcompatibility and use of the data table for each IndicatorsThe front panel of each ac discrete I/O module contains statusindicators.

4 Each status indicator shows the ON/OFF condition of anindividual Input or output . Some Modules have additional indicatorssuch as Fuse Blown and/or Triac keying bands shipped with each I/O chassis let you key yourI/O slots to accept only one type of module . You can key anybackplane connector in an I/O chassis to receive your module exceptfor the leftmost connector, which is reserved for adapter or Supply RequirementsModules receive power through the 1771 I/O chassis backplane fromthe associated chassis power supply. Total the current requirementsfor all the Modules in the chassis to avoid overloading the powersupply or the I/O chassis Placement GuidelinesGroup your Modules to minimize adverse effects from radiatedelectrical noise and/or heat.

5 Group analog Input and low voltage dc Modules away from acmodules or high voltage dc Modules in the chassis to minimizeelectrical noise interference. Place analog Input Modules and other I/O Modules that aresensitive to heat away from slot power supplies to minimizeadverse heat the Digital I/O Modules 1771 Digital I/O AC Input and output Modules3 OverviewPublication 1771 - July 1996 Addressing ModesYour Allen-Bradley processor can address its I/O in 2-slot, 1-slot or1/2-slot I/O groups. You select the addressing method for the chassisin which a processor or I/O adapter resides with the I/O chassisbackplane switch assembly. You make the selection for each chassisindependently, choosing one method of addressing for each Mode SelectionSome Digital ac Modules let you select last state or reset for Input oroutput failure select one of the two options by positioning a configuration plug(jumper) on the edge of the printed circuit board.

6 This plug isindependent of the last state switch on the I/O chassis set the jumper to determine whether the module s inputs oroutputs do one of the following when the module detects a fault: remain in their last state are turned off (reset)When the Input module detects a fault, it s Input -image bits are putinto the state indicated by the jumper position. When the outputmodule detects a fault it s outputs are put into the state indicated bythe jumper position. Refer to the table below for the state of inputsor outputs after a module detects a fault, and jumper Settings and the State of Inputs or OutputsIf you want module inputs and outputs to:Set jumper to:Stay in their last state when a moduledetects a faultlast state(LS)Reset to off when a module detects a faultresetFor instructions on how to set the configuration jumper on thosemodules that allow you to select the fault mode, refer to theindividual module specification Digital ac Input Modules convert ac signals from user devices tothe appropriate logic level for use within the processor.

7 Typicalinput devices include: proximity switches limit switches selector switches float switches pushbutton switchesAC Input Modules 1771 Digital I/O AC Input and output Modules4 OverviewPublication 1771 - July 1996 Allen-Bradley ac Input Modules are available with a wide range ofinput terminals per module . The table below lists the Allen-Bradleyac Input Modules , the image bits per module and addressing modesyou can use with the I/O chassis and chassis compatibility for eachinput Table Usage and I/O Chassis Compatibility forac Input ModulesModule Type andUse of Data TableAddressingCompatibleModule Type andCatalog NumberSeriesInputImage BitsOutputImage Bits1/2-Slot1-Slot2-SlotCompatibleChassi sAC Input Modules 1771 IA ModuleC8 YYYA, B1771 IA2 ModuleA8 YYYA, B1771 IAD ModuleD16 YYRB1771 IAN ModuleA32 YRNB1771 ID ModuleA8 YYYA, B 1771 ID01 ModuleA8 YYYA, B1771 ID16 ModuleA16 YYRB1771 IM ModuleA8 YYYA, B1771 IMD ModuleB16 YYRB1771 IN ModuleA8 YYYA.

8 B1771 IND ModuleB16 YYRBA = Compatible with superseded chassis ( 1771 A1, A2, A4)B = Compatible with current chassis ( 1771 A1B, A2B, A3B, A3B1, A4B, -AM1, -AM2)Y = Compatible without restrictionR = Conditional module placement; you must use an Input module and an output module in two adjacent slots (even/odd) of the I/O chassisbeginning with slot = Not compatibleInput FilteringInput filtering limits the effect of voltage transients caused bycontact bounce and/or electrical noise. If not filtered, voltagetransients could produce false circuits, module logic circuits, and the rest of the systemare protected from possible damage due to electrical transients byopto-electrical Modules allow you to configure filter times.

9 Refer to theindividual module specifications in this document for moreinformation. 1771 Digital I/O AC Input and output Modules5 OverviewPublication 1771 - July 19961771 Digital ac output Modules contain the output circuitry necessaryto control the ON/OFF status of ac user devices. Typical outputdevices compatible with your output module include: ac motor starters solenoids indicatorsThe Allen-Bradley ac Digital output Modules , their image bits permodule, the addressing modes you can use with I/O chassis andchassis compatibility for each output module are shown Table Usage and I/O Chassis Compatibility forac output ModulesModule Type andCatalog NumberSeriesInputImage BitsOutputImage Bits1/2-Slot1-Slot2-SlotCompatibleChassi sAC output Modules 1771 OA ModuleB 8 YYYA, B1771 OAD ModuleC See note16 YYRB1771 OAN ModuleA32 YRNB1771 OD ModuleC 8 YYYA, B1771 OD16 ModuleA16 YYRB1771 ODD ModuleA 16 YYRB1771 ODZ ModuleA 8 YYYA, B1771 OM ModuleA 8 YYYA, B1771 OMD ModuleB 16 YYRA, B1771 ON ModuleA 8 YYYA, B1771 OND ModuleB 16 YYRB1771 OP ModuleA 8 YYYA.

10 B1771 OR ModuleB 8 YYYA, BA = Compatible with superseded chassis ( 1771 A1, A2, A4)B = Compatible with current chassis ( 1771 A1B, A2B, A3B, A3B1, A4B, -AM1, -AM2)Y = Compatible without restrictionR = Conditional module placement; you must use an Input module and an output module in two adjacent slots (even/odd) of the I/O chassis beginningwith slot = Not compatible NOTE: Uses Input image table bits for fuse blown indication when internal jumper is set to CSI position. Do not use module in complementary modewhen jumper is in CSI SuppressionOutput Modules contain surge suppression circuitry for the outputtriacs. The output Modules provide a metal-oxide varistor (MOV)between each set of terminals to suppress high-voltage transientsfrom the ac line.