Related Manuals for Rockwell Automation Allen-Bradley 1794-IA8
Summary of Contents for Rockwell Automation Allen-Bradley 1794-IA8
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Page 1: Table Of Contents
Installation Instructions FLEX I/O AC Digital Input Modules Catalog numbers 1794-IA8, 1794-IA8I, 1794-IA16 Table of Contents Topic Page Important User Information Environment and Enclosure Preventing Electrostatic Discharge North American Hazardous Location Approval Installing Your AC Digital Input Module Configuring Your AC Input Module Specifications... -
Page 2: Important User Information
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. -
Page 3: Environment And Enclosure
FLEX I/O AC Digital Input Modules Environment and Enclosure 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 m (6562 ft) without derating. This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. -
Page 4: North American Hazardous Location Approval
4 FLEX I/O AC Digital Input Modules North American Hazardous Location Approval The following modules are North American Hazardous Location approved: 1794-IA8, 1794-IA8I, 1794-IA16. The following information applies when Informations sur l’utilisation de cet operating this equipment in hazardous équipement en environnements dangereux: locations: Products marked "CL I, DIV 2, GP A, B, C, D"... - Page 5 FLEX I/O AC Digital Input Modules ATTENTION: FLEX™ I/O is grounded through the DIN rail to chassis ground. Use zinc plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding.
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Page 6: Installing Your Ac Digital Input Module
6 FLEX I/O AC Digital Input Modules Installing Your AC Digital Input Module Description Description Keyswitch Alignment bar Terminal base Groove Flexbus connector Latching mechanism Module The module mounts on a 1794 terminal base. ATTENTION: During mounting of all devices, be sure that all debris (metal chips, wire strands, etc.) is kept from falling into the module. - Page 7 FLEX I/O AC Digital Input Modules 3. Make sure the pins on the bottom of the module are straight so they will align properly with the connector in the terminal base. WARNING: If you insert or remove the module while backplane power is on, an electrical arc can occur.
- Page 8 8 FLEX I/O AC Digital Input Modules For 1794-TBN – Connect the associated 120V AC power lead (L1) of the input device to the corresponding odd numbered terminal on the 34-51 row (C) for each input as indicated in the Wiring Connections for 1794-IA8 table. (The 120V AC power terminals of row (C) are internally connected together.) 3.
- Page 9 FLEX I/O AC Digital Input Modules 1794-TB2, 1794-TB3, and 1794-TB3S Terminal Base Wiring for 1794-IA8 and 1794-IA16 Inputs Commons Voltage (1794-TB3 shown) Connect 120V AC L1 power to terminal C-34 Connect 120V AC common L2 to terminal B-16 Use B-33 and C-51 for daisychaining to the next terminal base unit (Terminals C-35 thru C-50 not available on the 1794-TB2.) 1794-TBN Terminal Base Wiring for 1794-IA8 and 1794-IA16 Even Numbered I/O Terminals 0 thru 14...
- Page 10 10 FLEX I/O AC Digital Input Modules 2. For 1794-TB3 or 1794-TB3S – Connect the associated 120V AC power lead (L1) of the input device to the corresponding terminals on the 34-51 row (C) for each input as indicated in the Terminal Base Wiring for 1794-IA16 table. (The 120V power terminals of row (C) are internally connected together.) For 1794-TBN –...
- Page 11 FLEX I/O AC Digital Input Modules Terminal Base Wiring for 1794-IA16 Input Input Terminal Input Terminal 120V AC Supply (L1) 1794-TB3, 1794-TB3S 1794-TBN Input 15 A-15 C-15 C-50 120V AC L1 Power terminals C-34 to C-51 (C-34 and C-51 on 1794-TBN) are internally connected together.
- Page 12 12 FLEX I/O AC Digital Input Modules Wiring Connections for 1794-IA8I 1794-TB2, 1794-TB3, 1794-TB3S 1794-TBN Input Input Terminal 120V AC L2 Input Terminal 120V AC L2 Common Common Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 A-10 A-11 B-10...
- Page 13 FLEX I/O AC Digital Input Modules 1794-TBN Terminal Base Wiring for 1794-IA8I Even Numbered I/O Terminals 0 thru 14 Odd Numbered I/O Terminals 1 thru 15 (1794-TBN shown) Connect Inputs to even numbered terminals on row (B) L2 = 120V AC common - Connect to odd numbered terminals on row (C) Publication 1794-IN102C-EN-P - July 2015...
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Page 14: Configuring Your Ac Input Module
14 FLEX I/O AC Digital Input Modules Configuring Your AC Input Module Image Table Memory Map for the 1794-IA8 and 1794-IA8I Modules Read Write Not used – set to 0 Filter Time FT 0...7 Where I = Input FT = Input filter time Image Table Memory Map for the 1794-IA16 Module Read 1 Write 3... - Page 15 FLEX I/O AC Digital Input Modules For example, to increase the off-to-on filter time to 12 ms for all inputs at address rack 1, module group 0, set bits and program as shown below. Write filter time on system startup. Write FT to complement of input module.
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Page 16: Specifications
16 FLEX I/O AC Digital Input Modules Specifications Specifications – 1794-IA8, 1794-IA8I Attribute 1794-IA8 1794-IA8I Number of inputs 8, nonisolated 8, isolated Recommended terminal base unit 1794-TBN, 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBKD, 1794-TB3K, 1794-TB3SK, 1794-TBNK On-state voltage, min 65V AC On-state voltage, nom 120V AC On-state voltage, max 132V AC... - Page 17 FLEX I/O AC Digital Input Modules Specifications – 1794-IA16 Attribute Value On-state voltage, nom 120V AC On-state voltage, max 132V AC On-state current, min 5.49 mA On-state current, max 14.81 mA Off-state voltage, max 20V AC Off-state current, min 2.9 mA Nominal input impedance 10 kΩ...
- Page 18 18 FLEX I/O AC Digital Input Modules General Specifications Attribute Value Enclosure type rating None (open-style) Wire size Determined by installed terminala base Wiring category 2 – on signal ports Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.
- Page 19 FLEX I/O AC Digital Input Modules Environmental Specifications Attribute Value EFT/B immunity IEC 61000-4-4: ±2 kV @ 5 kHz on power ports ±2 kV @ 5 kHz on signal ports Surge transient immunity IEC 61000-4-5: ±1 kV line-line(DM) and ±2 kV line-earth(CM) on signal ports Conducted RF immunity IEC 61000-4-6: 10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz...
- Page 20 Rockwell Automation representative. New Product Satisfaction Return Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the manufacturing facility. However, if your product is not functioning and needs to be returned, follow these procedures.