Isolated-Circuit Discrete Input Output Modules (Cat. 1746sc Serie
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Publication 0300146-08 Rev.
Isolated-Circuit Discrete Input Output Modules
(Cat. 1746sc Series) Installation Instructions
Input Module Catalog Numbers: 1746sc-IA8I 1746sc-IB8I 1746sc-IC8I 1746sc-IM8I Isolated-Circuit 100/120 ac/dc Inputs Isolated-Circuit Inputs Isolated-Circuit Inputs Isolated-Circuit 200/240 ac/dc Inputs
Output Module Catalog Numbers: 1746sc-OAP8I Isolated-Circuit 120/240 Outputs
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Preface
addition providing module specifications, this document tells install your module into 500chassis wire field devices your module interpret your module's indicators check blown fuses (1746sc-OAP8I only) technical assistance
Please read information this publication before installing these products. This publication assumes full working knowledge relevant programmable controller.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Table Contents
General Information Specifications
General Specifications -IA8I Specifications, On/Off-State Voltage Range, Circuit Diagram -IB8I Specifications, On/Off-State Voltage Range, Circuit Diagram -IC8I Specifications, On/Off-State Voltage Range, Circuit Diagram -IM8I Specifications, On/Off-State Voltage Range, Circuit Diagram -OAP8I Specifications, Operating Voltage Range, Circuit Diagram
Important Pre-Installation Considerations Installing Your Module Into 500Chassis Wiring Field Devices Your Module
Compliance Requirements -IA8I Wiring Diagram -IB8I Wiring Diagram -IC8I Wiring Diagram -IM8I Wiring Diagram -OAP8I Wiring Diagram
Interpreting Your Module's Indicators Checking Blown Fuses (1746sc-OAP8I only) Getting Technical Assistance
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
General Information Specifications
This module designed exclusively mount Allen-Bradley 1746 racks with Allen-Bradley SLC500 fixed modular systems. 1746scIA8I, IB8I, -IC8I, -IM8I feature isolated-circuit inputs, each with common. These modules also feature broad operating ranges increased versatility. They designed with wide variety input devices, such limit switches, float switches, selector switches, pushbuttons, proximity switches (photo-sensors). They even monitor relay motor starter outputs directly. 1746sc-OAP8I provides triac-controlled, isolated-circuit outputs, each with common. module also provides broad operating range increased versatility. designed with high inductive loads, such solenoids, relays, motor starters. Unlike relay outputs, triac outputs require back-EMF surge suppression many inductive loads. triac output module also good replacement relay output module when solid-state speed reliability desired.
General Specifications- 1746sc Series
Isolation Voltage Environmental Conditions Operational Temperature Storage Temperature Relative Humidity Certifications 1500 point-to-point 1500 field wiring-to-backplane 60°C (32° 140°F) -40° +85°C -40° 185°F) (non-condensing) UL/C-UL (Class Groups ABCD) Council Directives 89/336/EEC 73/23/EEC Voltage gage stranded maximum 3/64 inch insulation maximum Red, removable (A-B part 1746-RT25R)
Conductors Wire Size Category Field Wiring Terminal Block
this conductor-category information planning conductor routing described Allen-Bradley's system-level Installation Operation Manual.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules noted previous table, these 1746sc-Series modules provide 1500 point-to-point isolation. This point-to-point isolation means: shorts, overloads, noise circuit won't affect devices other circuits. different power sources connected same module without damaging components excessive voltage differences between points. interposing relays aren't needed achieve these benefits, saving space simplifying installation. 1746sc-OAP8I provides some additional benefits: each output circuit individually fuse protected. blown fuses indicated user through logic controller through logic controller's input image table. This allows fuse monitoring smart power-down sequencing equipment after circuit failure. more information benefits isolated circuits other features 1746sc-Series modules, call your local distributor Spectrum Controls (425-746-9481).
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IA8I Specifications
Number Inputs Points Common Voltage Category Operating Voltage Nominal Input Current Input Inrush Current (maximum) Input Signal Delay (maximum) Off-State Current (maximum) Power Dissipation (maximum) Watts point Total watts Backplane CurrentDraw (max.)
(individually isolated) 100/120 50/60 100/120 Vdc, sink source Vac,
Vac/dc; 0.75 Vac/dc Vac/dc; Vac/dc 0.110
Maximum allowable leakage current from input device state. Maximum with input turned Maximum with inputs turned (100% duty cycle).
1746sc-IA8I On/Off-State Voltage Range
Vac* Off-State
Frequency
Vac*
Vac* On-State
Vac*
Input State Guaranteed
1746sc-IA8I Circuit Diagram (one circuit shown)
VAC/VDC 0.33 24.3 24.3
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IB8I Specifications
Number Inputs Points Common Voltage Category Operating Voltage Nominal Input Current Input Signal Delay (maximum) Off-State Current (maximum) Power Dissipation (maximum) Watts point Total Watts Backplane CurrentDraw (max.)
sink source (individually isolated) ±11.5 Vac/dc Vdc; Vdc; 0.110
Maximum allowable leakage current from input device state. Maximum with 1input turned Maximum with inputs turned (100% duty cycle).
1746sc-IB8I On-Off-State Voltage Range
Off-State 11.5 On-State
Input State Guaranteed
1746sc-IB8I Circuit Diagram (one circuit shown)
1.91 3.16 1.91
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IC8I Specifications
Number Inputs Points Common Voltage Category Operating Voltage Nominal Input Current Input Signal Delay (maximum) Off-State Current (maximum) Power Dissipation (maximum) Watts point Total watts Backplane CurrentDraw (max.)
sink source (individually isolated) Vac/dc Vdc; 0.85 Vdc; 0.110
Maximum allowable leakage current from input device state. Maximum with input turned Maximum with inputs turned (100% duty cycle).
1746sc-IC8I On/Off-State Voltage Range
Off-State Input State Guaranteed On-State
1746sc-IC8I Circuit Diagram (one circuit shown)
7.87 6.65 7.87
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IM8I Specifications
Number Inputs Points Common Voltage Category Operating Voltage Nominal Input Current Input Inrush Current (maximum) Input Signal Delay (maximum) Off-State Current (maximum) Power Dissipation (maximum) Watts point Total watts Backplane CurrentDraw (max.)
sink source (individually isolated) 200/240 50/60 200/240 13.5 Vac, 0.85
c/dc; Vac/dc Vac/dc; Vac/dc 0.110
Maximum allowable leakage current from input device state. Maximum with input turned Maximum with inputs turned (100% duty cycle).
1746sc-IM8I On-Off-State Voltage Range
Vac* Off-State
Frequency
Vac*
Vac* On-State
Vac* Vdc**
Input State Guaranteed
short-term overload hour)
1746sc-IM8I Circuit Diagram (one circuit shown)
VAC/VDC 0.15 49.9 49.9
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-OAP8I Specifications
Number Outputs Points Common Module Location Voltage Category Operating Voltage Output Current Rating Point Output Current Rating Module Surge Current (maximum) Load Current (minimum) On-State Voltage Drop (maximum) Off-State Leakage Current (max.) Signal Delay Power Dissipation (maximum) Backplane CurrentDraw (max.)
Maximum with module dissipating (100% duty cycle).
triac 1746 chassis 120/240 50/60 30°C; 60°C 30°C; 60°C output repeatable every module repeatable every output Zero crossing: 10.0 Zero crossing: 10.0 9.85 0.170
1746sc-OAP8I Operating Voltage Range
Vac* Operation Guaranteed
Frequency
Vac* Recommended Operating Range
Vac*
1746sc-OAP8I Circuit Diagram (one circuit shown)
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Important Pre-Installation Considerations
This module shipped static-shielded container guard against electrostatic discharge damage. Observe following precautions when handling module:
CAUTION ELECTROSTATICALLY SENSITIVE COMPONENTS Observe following precautions guard against electrostatic damage: Wear approved wrist strap grounding device, touch grounded object discharge yourself before handling module. touch gold backplane connector connector pins. available, static-free work station. When use, keep module static-shielded bag.
Failure observe these precautions damage your module.
When using Allen-Bradley Programming Software (APS) configure chassis slot your module, simply select your module from list modules system configuration display. (Note: Some versions list modules without "sc" designation, 1746-IA8I.) your module listed, select OTHER bottom list enter your module's code prompt:
Module Code 1746sc-IA8I 1746sc-IB8I/-IC8I 1746sc-IM8I 1746sc-OAP8I 1905
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Installing Your Module Into Chassis
WARNING EXPLOSION HAZARD When hazardous locations, turn power before replacing wiring modules. Failure observe this precaution cause equipment damage, severe personal injury, death.
WARNING POSSIBLE EQUIPMENT OPERATION DAMAGE Always remove power from chassis backplane terminal block before removing installing module. Failure remove power from backplane terminal block cause module damage, degraded performance, injury. Failure remove power from backplane also cause injury equipment damage possible equipment operation.
This equipment suitable Class Division Groups non-hazardous locations only. Before installing your module into SLC500 chassis, make sure that nothing will block ventillation above below your module. Also, high ambient temperatures, need install forced cooling prevent excessive heat buildup. install your module into chassis, follow these steps:
Installation Instructions
Isolated-Circuit Discrete Input Output Modules 1.Turn power chassis. 2.Align circuit board your module with card guides bottom chassis 3.Slide your module into chassis until both bottom retaining clips secure. Apply firm even pressure your module attach backplane connector. Never force your module into slot. Cover unused slots with Card Slot Filler, Allen-Bradley part 1746-N2. remove your module, follow these steps: Turn power chassis. Remove terminal block field device wiring necessary. Press retaining clips bottom your module.
Note that components circuit board very hot: 1746sc-IB8I -IC8I 1746sc-IM8I 1746sc-OAP8I 120° temperature code T4A) 135° temperature code 100° temperature code
CAUTION
COMPONENTS When removing 1746sc-IM8I -OAP8I after use, avoid touching components printed circuit board. Failure observe this precaution cause personal injury.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Wiring Field Devices Your Module
C-UL compliance, power, input, output (field device) wiring must accordance with Class Division wiring methods [Article 5014 National Electrical Code, NFPA accordance with authority having jurisdiction. addition, peripheral equipment must suitable location which used.
WARNING THIS DEVICE INTENDED ONLY USED WITH ALLENBRADLEY SLC500 SYSTEMS.
WARNING
EXPLOSION HAZARD When hazardous locations, turn power before replacing wiring modules. Also, disconnect equipment unless power been switched area known non-hazardous. Failure observe this precaution cause equipment damage, severe personal injury, death.
WARNING
HIGH LEAKAGE CURRENT Before wiring field devices 1746sc-IA8I, -IM8I, -OAP8I, ensure that processor been properly grounded. Failure observe this precaution cause equipment damage personal injury.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules wire field devices your module, follow these steps: Turn power chassis. Optional: Remove supplied 18-position terminal block from module. remove terminal block, unscrew retaining screws bottom terminal block, pull terminal block loose. Wire field devices your module shown following wiring diagrams, using maximum wire size maximum wires terminal. recommended terminal screw torque in.-lb. Install wire slot below terminal block secure wires.
Compliance Requirements
installations requiring compliance, must following: Observe grounding guidelines provided Allen-Bradley's Installation Operation Manual (Allen-Bradley publication 1747-NI002). Connect E-GND terminal module directly rack mounting bolt. Hard wire permanently connect mains, provide sleeve (IEC 309) connector connection mains. This equipment intended over-voltage category installations (see 364-4-443), where rated mains supply voltage does exceed 1000 (50/60 1500 Vdc. input power rated above these levels, ensure that your system isolated from power main isolation transformer equivalent over-voltage protection device) that approval approval from European test agency. 1746c-IA8I, -IM8I, -OAP8I, must also protect against electrical shock installing chassis enclosure with IP20 IP29 rating 529. enclosure should have warning labels (hazard symbol 417-IEC-5036) and/or mechanical disconnect minimize risk accidental shock during maintenance. enclosure that only opened with tool.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules addition, 1746sc-IA8I, -IB8I, -IC8I, -IM8I only, must install ferrite power line. either clam-shell type (Steward part 28B2029-0A0 equivalent) ring type (Steward part 28B2400-000 oivalent). ring type, loop cable through least once.
Module
obtain these ferrites directly from Steward: Post Office Chattanooga, 37401 Fax: (426) 867-4102 Tel: (426) 867-4100
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IA8I Isolated-Circuit 100/120 ac/dc Inputs +VDC 100/120 ac/dc
VAC/VDC VAC/VDC VAC/VDC VAC/VDC E-GND E-GND
Alternative input device location
Rack mounting bolt
+VDC +VDC +VDC
+VDC +VDC +VDC +VDC
VAC/VDC VAC/VDC VAC/VDC VAC/VDC
Type devices that can't support inrush current, external resistor input line reduce inrush
Note input circuits electrically isolated from each other (the commons connected internally). Therefore, eight different voltage sources (VS0-VS7) used. Module Code
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IB8I Isolated-Circuit Inputs +VDC Vdc*
E-GND E-GND
Alternative input device location
+VDC +VDC +VDC
Rack mounting bolt
+VDC +VDC +VDC +VDC
Note input circuits electrically isolated from each other (the commons connected internally). Therefore, eight different voltage sources (VS0-VS7) used. Inputs bipolar connected without regard polarity. Module Code
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IC8I Isolated-Circuit Inputs +VDC Vdc*
E-GND E-GND
Alternative input device location
+VDC +VDC +VDC
Rack mounting bolt
+VDC +VDC +VDC +VDC
Note input circuits electrically isolated from each other (the commons connected internally). Therefore, eight different voltage sources (VS0-VS7) used. Inputs bipolar connected without regard polarity. Module Code
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-IM8I Isolated-Circuit 200/240 ac/dc Inputs +VDC 200/240 ac/dc
VAC/VDC VAC/VDC VAC/VDC VAC/VDC E-GND E-GND
Alternative input device location
+VDC +VDC +VDC
Rack mounting bolt
+VDC +VDC +VDC +VDC
VAC/VDC VAC/VDC VAC/VDC VAC/VDC
Type devices that can't support inrush current, external resistor input line reduce inrush
Note input circuits electrically isolated from each other (the commons connected internally). Therefore, eight different voltage sources (VS0-VS7) used. Module Code
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
1746sc-OAP8I Isolated-Circuit 120/240 Outputs
Alternative output device location
120/240
E-GND
E-GND
Rack mounting bolt
Note output circuits electrically isolated from each other (the commons connected internally). Therefore, eight different voltage sources (VS0-VS7) used. Module Code 1905
Interpreting Your Module's Indicators
1746sc-IA8I, -IB8I, -IC8I, -IM8I, each status indicator (0-7) illuminates when proper signal received corresponding input terminal.
1746sc-IA8I
INPUT
STATUS
1746sc-IB8I
INPUT
STATUS
1746sc-IC8I
INPUT
STATUS
1746sc-IM8I
INPUT
STATUS
ISOLATED 100/120V AC/DC
ISOLATED 24VDC
ISOLATED
ISOLATED 200/240V AC/DC
Installation Instructions
Isolated-Circuit Discrete Input Output Modules 1746sc-OAP8I, each status indicator (0-7) illuminates when processor commands module turn corresponding output. indicators necessarily indicate presence absence power output. Blown-Fuse indicator illuminates when output fuses blows.
1746sc-OAP8I
OUTPUT
STATUS
FUSE
ISOLATED TRIAC 120/240
Checking Blown Fuses (1746sc-OAP8I only)
fuse blows 1746sc-OAP8I, following occurs: blown-fuse indicator illuminates (provided your module receiving power from chassis). module indicates logic controller's input image table which fuse blown. This allows fuse monitoring smart power-down sequencing equipment after circuit failure. verify that fuse opened visually checking fuses, shown below. Turn power off, replace blown fuses with specified replacement part only. Substitutes acceptable.
Replaceable Fuses (F1-F8) SLO-BLO Littelfuse part 229003
OAP8I
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Getting Technical Assistance
need technical assistance, please review troubleshooting information Allen-Bradley's system-level Installation Operation Manual before calling your local distributor Spectrum Controls. Except replaceable fuses each output) 1746sc-OAP8I, these modules contain user-serviceable parts, necessary, should returned Spectrum Controls repair.
WARNING EXPLOSION HAZARD Substituting components impair suitability Class Division
Note that your module contains electronic components which susceptible damage from electrostatic discharge (ESD). electrostatic charge accumulate surface ordinary plastic wrapping cushioning material. unlikely event that module should need returned Spectrum Controls, please ensure that unit enclosed approved packaging (such static-shielding metallized black conductive container). Spectrum Controls reserves right void warranty unit that improperly packaged shipment. further information assistance, please contact your local distributor, call Spectrum Controls Customer Satisfaction department (425) 746-9481 from 8:00 A.M. 5:00 P.M., Pacific Time.
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
MEMO
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
Notice products services described this publication useful wide variety applications. Therefore, user others responsible applying products services described herein responsible determining their acceptability each application. While efforts have been made provide accurate information within this publication, Spectrum Controls assumes responsibility accuracy, completeness, usefulness information contained herein. Under circumstances will Spectrum Controls responsible liable damages losses, including indirect consequential damages losses, arising either information contained within this publication product service referenced herein. patent liability assumed Spectrum Controls with respect information, products, circuits, programming, services referenced herein. information contained this publication subject change without notice. Limited Warranty Spectrum Controls warrants that products free from defects material workmanship under normal service, described Spectrum Controls literature covering this product, period year. Spectrum Controls obligations under this warranty limited replacing repairing, option, factory facility, product which shall, applicable period after shipment, returned Spectrum Controls facility, transportation charges prepaid, which after examination determined, satisfaction Spectrum Controls, thus defective. This warranty shall apply such equipment which shall have been repaired altered except Spectrum Controls which shall have been subject misuse, neglect, accident. case shall Spectrum Controls liability exceed purchase price. aforementioned provisions extend original warranty period product which either been repaired replaced Spectrum Controls. Declaration Conformity
Installation Instructions
Isolated-Circuit Discrete Input Output Modules
your distributor about these other Allen-Bradley compatible products from Spectrum Controls:
Catalog 1746sc-INI4vi 1746sc-INI4i 1746sc-INO4vi 1746sc-INO4i 1746sc-IA8I 1746sc-IB8I 1746sc-IC8I 1746sc-IM8I 1746sc-OAP8I 1771sc-IMI16 1771sc-OMI16 Description Isolated-Channel Analog Inputs Each Current Voltage Selectable Isolated-Channel Analog Inputs Current only Isolated-Channel Analog Outputs Each Current Voltage Selectable Isolated-Channel Analog Outputs Current only Isolated-Circuit 100/120 ac/dc Inputs Isolated-Circuit Inputs Isolated-Circuit Inputs Isolated-Circuit 200/240 ac/dc Inputs Isolated-Circuit 120/240 Outputs Isolated-Circuit 200/240 ac/dc Inputs (16) Isolated-Circuit 120/240 Triac Outputs (16) Each Fuse Protected
ENCOMPASS logo trademarks Allen-Bradley Company, Inc. Copyright 1998 Spectrum Controls, Inc. rights reserved. Specifications subject change without notice. Printed U.S.A. Publication 0300146-08 Rev. August 2003 U.S.A. Headquarters Spectrum Controls, Inc. P.O. 5533 Bellevue, Washington 98006 Fax: (425) 641-947 Tel: (425) 746-9481 Midwest Sales Office Spectrum Controls, Inc. 48945 Dyke, Utica, Michigan 48317 Fax: (586) 731-2715 Tel: (586) 731-2397 Site: http://www.spectrumcontrols.com Email: spectrum@spectrumcontrols.com Southeast Sales Office Spectrum Controls, Inc. 8860 Saddle Trail Ball Ground, 30107 Fax: (678) 455-4615 Tel: (678) 455-4640
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