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Summary of Contents for Rockwell Automation 1794-OB8
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Page 1: Table Of Contents
European Hazardous Location Approval North American Hazardous Location Approval Install Your FLEX I/O AC Digital Output Module Connect Wiring for 1794-OB8, 1794-OB8EP, 1794-OB16, and 1794-OB16P Connect Wiring for the 1794-OB32P Configuring your 1794-OB8EP Output Module Configure the 1794-OB8, 1794-OB16, 1794-OB16P, 1794-OB32P Modules... -
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 Digital DC Output 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 EN/IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating. This equipment is not intended for use in residential environments and may not provide adequate protection to radio communication services in such environments. - Page 4 4 FLEX I/O Digital DC Output Modules ATTENTION: This product is grounded through the DIN rail to chassis ground. Use zinc plated chromate-passivated 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.
- Page 5 FLEX I/O Digital DC Output Modules WARNING: When you insert or remove the module while backplane power is on, an electric arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding.
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Page 6: European Hazardous Location Approval
6 FLEX I/O Digital DC Output Modules European Hazardous Location Approval Approved for 1794-OB8, 1794-OB8EP, 1794-OB16 and 1794-OB16P modules.. The following applies to products marked II 3 G: Are Equipment Group II, Equipment Category 3, and comply with the Essential Health and Safety Requirements relating to the design and construction of such equipment given in Annex II to EU Directive 2014/34/EU. -
Page 7: North American Hazardous Location Approval
FLEX I/O Digital DC Output Modules North American Hazardous Location Approval The 1794-OB8, 1794-OB8EP, 1794-OB16, 1794-OB16P module is Hazardous Location approved: The following information applies when Informations sur l’utilisation de cet équipement operating this equipment in hazardous locations: en environnements dangereux: Products marked "CL I, DIV 2, GP A, B, C, D"... -
Page 8: Install Your Flex I/O Ac Digital Output Module
8 FLEX I/O Digital DC Output Modules Install Your FLEX I/O AC Digital Output Module Description Description Flexbus connector Groove Latching mechanism Alignment bar Keyswitch Module Terminal base The module mounts on a 1794 terminal base. Rotate the keyswitch (3) on the terminal base (4) clockwise to position 2 as required for this type of module. -
Page 9: Connect Wiring For 1794-Ob8, 1794-Ob8Ep, 1794-Ob16, And 1794-Ob16P
Connect Wiring for 1794-OB8, 1794-OB8EP, 1794-OB16, and 1794-OB16P Connect individual output wiring to numbered terminals on the 0-15 row (A) as indicated in the table below 1794-OB8 – Terminals 0...7; 1794-OB16 and 1794-OB16P – terminals 0...15; 1794-OB8EP – even numbered terminals 0...14. - Page 10 24V DC common. 1794-TBN – C-1, C-3, C-5, C-7, C-9, C-11, C-13, and C-15 are connected together inside the module to 24V DC common. 1794-TB2, 1794-TB3, and 1794-TB3S Terminal Base Wiring for 1794-OB8, 1794-OB8EP, 1794-OB16, and 1794-OB16P Outputs...
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Page 11: Connect Wiring For The 1794-Ob32P
FLEX I/O Digital DC Output Modules 1794-TBN Terminal Base Wiring for 1794-OB8EP Even Numbered I/O Terminals 0 thru 14 Odd Numbered I/O Terminals 1 thru 15 Connect -V (Supply Common) to terminal B-16 Connect +V (Supply +Voltage) to terminal C-34 (Use B-33 and C-51 for daisy-chaining to next terminal base unit.) Total current draw through the terminal base is limited to 10A. - Page 12 12 FLEX I/O Digital DC Output Modules Total current draw through terminal base connection is limited to 10 A. IMPORTANT Separate power connections to each terminal base may be necessary. Wiring Connections for 1794-OB32P used with 1794-TB32 or 1794-TB32S Terminal Base Unit Output Output Terminal Common...
- Page 13 FLEX I/O Digital DC Output Modules Wiring Connections for 1794-OB32P used with 1794-TB32 or 1794-TB32S Terminal Base Unit Output Output Terminal Common Power Output 28 B-29 Connect common to Connect power to terminals terminals 44, 46, 48, and 50 43, 45, 47, and 49 Output 29 B-30 Output 30...
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Page 14: Configuring Your 1794-Ob8Ep Output Module
14 FLEX I/O Digital DC Output Modules Configuring your 1794-OB8EP Output Module Configure your output module by setting bits in the configuration word Image Table Memory Map for the 1794-OB8EP Module Read Reserved Write Not used Where: O = Output – O0 corresponds to output 0, 01 corresponds to output 1, and so on. F = Overload fault bit –... -
Page 15: Configure The 1794-Ob8, 1794-Ob16, 1794-Ob16P, 1794-Ob32P Modules
O17 O16 1794-OB32P only Where: O = Output – O0 corresponds to output 0, 01 corresponds to output 1, and so on. 1794-OB8 uses outputs 0...7; 1794-OB16 and 1794-OB16P use outputs 0...15; 1794-OB32P uses outputs 0...31. Publication 1794-IN094D-EN-P - July 2018... -
Page 16: Specifications
16 FLEX I/O Digital DC Output Modules Specifications Specifications – 1794-OB8 Attribute Value Number of outputs 8, current, sourcing Recommended terminal base unit 1794-TB2, 1794-TB3, 1794-TB3S,1794-TB3K, 1794-TB3SK On-state voltage, output min 10V DC On-state voltage, output nom 24V DC On-state voltage, output max 31.2V DC... - Page 17 FLEX I/O Digital DC Output Modules Specifications – 1794-OB8EP Attribute Value On-state voltage, output nom 24V DC On-state voltage, output max 31.2V DC Output current rating 2.0 A max per output 10.0 A max per module (8 outputs @ 1.25 A, 5 outputs @ 2.0 A, or similar combinations totaling 10.0 A or less) On-state current, output, min 1.0 mA per channel...
- Page 18 18 FLEX I/O Digital DC Output Modules Specifications – 1794-OB16 and 1794-OB16P Attribute 1794-OB16 1794-OB16P Number of outputs 16, current, sourcing Recommended terminal base unit 1794-TB2,1794-TB3,1794-TB3S, 1794-TB3K, 1794-TB3SK On-state voltage, output min 10V DC On-state voltage, output nom 24V DC On-state voltage, output max 31.2V DC (see Derating Curve for...
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Page 19: General Specifications
FLEX I/O Digital DC Output Modules Specifications – 1794-OB32P Attribute Value Number of outputs 32, current, sourcing Recommended terminal base unit 1794-TB32, 1794-TB32S On-state voltage, output min 10V DC On-state voltage, output nom 24V DC On-state voltage, output max 31.2V DC Output current rating 14.0 A max per module (6 A total for channels 0...15;... - Page 20 (1794-OB8EP) 19.2...31.2V DC (includes 5% AC ripple) External DC power supply current 25 mA @ 24V DC (10...35 mA) – 1794-OB8 80 mA @ 24V DC – 1794-OB8EP 49 mA @ 24V DC (20...65 mA) – 1794-OB16 60 mA @ 24V DC (25...75 mA) – 1794-OB16P (see Derating Curve) 219 mA @ 24V DC (104 mA @ 10V DC;...
- Page 21 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz 10V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz – 1794-OB8, 1794-OB16 3V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz – 1794-OB8EP,...
- Page 22 UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and Canada. See UL File E334470. – 1794-OB32P 1794-OB8, 1794-OB8EP, 1794-OB16, 1794-OB16P only CSA Certified Process Control Equipment. See CSA File LR54689C. CSA Certified Process Control Equipment for Class I, Division 2 Group A,B,C,D Hazardous Locations.
- Page 23 FLEX I/O Digital DC Output Modules Derating Curve for 1794-OB16P 31.2 28.5 27.5 On-State Voltage (V DC) Ambient Temperature o C The area within the curve represents the safe operating range for the module under various conditions of user supplied 24V DC supply voltages and ambienttemperatures. = Normal mounting safe operating range, (includes = Other mounting positions (including inverted horizontal) safe operating Normal Mounting –...
- Page 24 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.
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