Installation Instructions FLEX I/O Isolated Output HART Analog Module Catalog Number 1794-OF8IH Topic Page Important User Information 2 Environment and Enclosure 3 Preventing Electrostatic Discharge 4 North American Hazardous Location Approval 5 Install the Module 7 Wire the Module 8 Ground the Module 10 Module Wiring 11 Cyclic HART Input Data 19 Status Indicator 23 Specifications 23 IMPORTANT This module can only be used with 1794-ACN(R)15 with version 5.
FLEX I/O Isolated Output HART Analog Module 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.
FLEX I/O Isolated Output HART Analog Module 3 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 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 11.
FLEX I/O Isolated Output HART Analog Module ATTENTION This product 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 and plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure DIN rail to mounting surface approximately every 200 mm (7.8 in.) and use end anchors appropriately.
FLEX I/O Isolated Output HART Analog Module 5 North American Hazardous Location Approval The following information applies when operating this equipment in hazardous locations: Informations sur l’utilisation de cet équipement en environnements dangereux: Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only.
FLEX I/O Isolated Output HART Analog Module European Hazardous Location Approval European Zone 2 Certification (The following applies when the product bears the Ex or EEx Marking.
FLEX I/O Isolated Output HART Analog Module 7 Install the Module Read this for information about how to install the module, which mounts on a 1794-TB3 or 1794-TB3S terminal base. 7 3 1 2 6 4 5 44341 ATTENTION During mounting of all devices, be sure that all debris (such as metal chips or wire strands) is kept from falling into the module. Debris that falls into the module could cause damage on power up. To install the module on a 1794 terminal base, refer to the figure and complete the following. 1.
FLEX I/O Isolated Output HART Analog Module 3. Make sure the pins on the bottom of the module are straight so they align properly with the connector in the terminal base. WARNING If you remove or insert the module while the backplane power is on, an electrical 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. 4.
FLEX I/O Isolated Output HART Analog Module 9 2. Connect each channel signal return to the associated terminal on row A. 3. Connect the +V DC power lead to terminal 34 on the 34…51 row C, and the -V common/return to terminal 16 on the 16…33 row B. ATTENTION To reduce susceptibility to noise, power analog modules and digital modules from separate power supplies. Do not exceed a length of 3 m (9.8 ft) for DC power cabling. 4.
FLEX I/O Isolated Output HART Analog Module Ground the Module All I/O wiring must use shielded wire. Shields must be terminated external to the module, such as bus bars and shield-terminating feed-throughs.
FLEX I/O Isolated Output HART Analog Module 11 Module Wiring 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Row A Row B Row C Label placed at top of wiring area Row A Row B Row C 1794-TB3S shown Actuator Actuator 44319 Actuator Wire Connections Channel Signal Type Label Markings Catalog Numbers 1794-TB3 or 1794-TB3S Terminal 0 Current O0 A-0 Current O0 Ret A-1 Current O1 A-2 Current O1
FLEX I/O Isolated Output HART Analog Module Wire Connections Channel Signal Type 4 Current O4 A-8 Current O4 Ret A-9 Current O5 A-10 Current O5 Ret A-11 5 6 7 Label Markings Catalog Numbers 1794-TB3 or 1794-TB3S Terminal Current O6 A-12 Current O6 Ret A-13 Current O7 A-14 Current O7 Ret A-15 -V DC common For catalog numbers 1794-TB3 and 1794-TB3S, terminals B-16…33 are internally connected in the terminal base unit.
FLEX I/O Isolated Output HART Analog Module 13 (1) This alarm is disabled in Analog 0…20 mA formats (Formats 0,1,3) or if “Wire Fault Detection” is not enabled in configuration.
FLEX I/O Isolated Output HART Analog Module Configuration Map Word Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 FT R E W 7 E W 6 E W 5 E W 4 BOB(1) R R E W 3 E W 2 E W 1 E W 0 BOA(1) 1 D H 7 D H 6 D H 5 D H 4 D H 3 D H 2 D H 1 2 CH 3 Format CH 2 Format CH 1 Format CH 0 Format 3 CH 7 Format CH 6 Format CH 5 Format CH 4 Format 4 CH1 HART Current Ratio L1 AFS1 CH0 HART Current Ratio L0 AFS0 5 CH3 HART Current Ratio L3 AFS3 CH2 HART Current Ratio L2
FLEX I/O Isolated Output HART Analog Module 15 Configuration Map Word Bit 15 14 13 12 11 10 9 8 16 Channel 7 Analog Fault Value Output Data 17 Reserved 7 6 5 4 3 2 1 0 C 7 C 6 C 5 C 4 C 3 C 2 C 1 C 0 Note: Reserved data may not be shown in certain controller software (1) not shown or used in RSLogix 5000. Configuration Map descriptions BOA BOB Byte order group A Byte order group B Byte order group A and B values must match each other.
FLEX I/O Isolated Output HART Analog Module Configuration Map descriptions DHn: Disable HART communications on channel n 0: HART communications enabled 1: HART communications disabled Cn: HART CMD 3 Disable 0: HART CMD 3 communications enabled 1: HART CMD 3 communications disabled R: Reserved CH N Format Refer to the Channel Data Formats table (1) Not supported in Analog 0…20 mA formats (2) Lead break must be present for 100 ms or more Byte Order Byte Order Group B Byte Order Group A Bi
FLEX I/O Isolated Output HART Analog Module 17 Channel Analog Fault Mode Selection Analog Fault Mode Decimal Value Bits 9 8 1 0 Min Scale 0 0 0 Max Scale 1 0 0 Hold Last State 2 1 0 User Specifed Data Value 3 1 1 HART Current Ratio HART Current Ratio Limit Decimal Value Bits 15 14 13 12 11 7 6 5 4 3 Disabled 0 0 0 0 0 0 Not applicable 1 0 0 0 0 1 Not applicable 2 0 0 0 1 0 Not applicable 3 0 0 0 1 1 Not applicable 4 0 0 1 0 0 5% 5 0 0
FLEX I/O Isolated Output HART Analog Module Channel Data Formats Format (1) Bits 15 11 7 3 14 10 6 2 13 9 5 1 12 8 4 0 Format Name Signal Range User Range LO HI LO Resolution HI 0 0 0 0 0 0…20 mA in 0.00 Milliamps 22.00 0 22000 1.0 µA (0.000 mA) (22.000 mA) 1 0 0 0 1 0…20 mA in 0.00 % Full Scale 22.00 0 (0%) 11000 (110.00%) 2.0 µA 3 0 0 1 1 0…20 mA in 0.00 UINT 20.00 0 65535 0.3052 µA 4(2) 0 1 0 0 4…20 mA in 2.00 Milliamps 22.00 2000 22000 1.0 µA (2.000 mA) (22.
FLEX I/O Isolated Output HART Analog Module 19 Format Values Format Format name 0.0 mA 2.0 mA 4.0 mA 20.0 mA 22.
FLEX I/O Isolated Output HART Analog Module HART Input Data Word Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 C H 7 C H 6 C H 5 C H 4 C H 3 C H 2 C H 1 C H 0 0 Reserved 1 Reserved 2 CH0 HART Field Device Status 3 Reserved 4 CH0 HART Primary Value (IEEE 754-1985 Single-Precision 32 bit floating point) (HART CMD 3 Communications Status) F V A T V A CH0 HART Comm Status S V A P V A CH0 HART Loop Status 5 6 CH0 HART Secondary Value (IEEE 754-1985 Single-Precision 32 bit
FLEX I/O Isolated Output HART Analog Module 21 HART Input Data Word Bit 15 14 13 12 11 10 50… 61 Words 2…13 for channel 4 62… 73 Words 2…13 for channel 5 74… 85 Words 2…13 for channel 6 86… 97 Words 2…13 for channel 7 9 8 7 6 5 4 3 2 1 0 Publication 1794-IN120C-EN-P - April 2009
FLEX I/O Isolated Output HART Analog Module HART Input Data descriptions CHn: HART CMD 3 Communication Status 0: HART CMD3 Communication Disabled or No Error CHn: HART Comm Status (HART CMD3 Response first status byte): Refer to User Manual CHn: HART Field Device Status (HART CMD3 Response second status byte): Refer to User Manual HART Loop Status: Bit 0: HART enable Bit 1: Device Connected Bit 2: Response Error Bit 3: CMD 48 Update Bit 4: HART Loop Tolerance Error Bit 5: HART Update Bit 6: HART m
FLEX I/O Isolated Output HART Analog Module 23 Status Indicator The OK status indicator is bicolor, red, and green. The indicator flashes green for these reasons: • The module configuration word is zero (for example, powerup reset condition). • The 24V DC user power is off. • The module is in Configuration mode. The indicator displays red to indicate the module did not pass the initial hardware test. Recycle power in response to this display.
FLEX I/O Isolated Output HART Analog Module FLEX I/O Isolated Output Analog Module - 1794-OF8IH Attribute Value Absolute accuracy ± 0.1% Full Scale @ 25 °C ± 0.35% Full Scale @ 0 °C…55 °C Accuracy drift with temperature(1) ± 0.008% /ºC 0.
FLEX I/O Isolated Output HART Analog Module 25 FLEX I/O Isolated Output Analog Module - 1794-OF8IH Attribute Value North American temperature code T4 IEC Temp Code T4 Dimensions (HxWxD), approx. 94.0 x 94.0 x 66.0 mm (3.7 x 3.7 x 2.6 in.) with module installed in base (1) Includes offset, gain, nonlinearity. and repeatability error terms. (2) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.
FLEX I/O Isolated Output HART Analog Module Environmental Attribute Value Shock, nonoperating IEC 60068-2-27 (Test Ea, Unpackaged Shock): 25 g Emissions CISPR 11: Group 1, Class A ESD Immunity IEC 61000-4-2: 6 kV contact discharges 8 kV air discharges Radiated RF Immunity IEC 61000-4-3: 10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz 10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz 10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz 3V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz EFT/B Immunit
FLEX I/O Isolated Output HART Analog Module 27 Certifications Certification (when Value product is marked)(1) c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada. See UL File E65584. UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and Canada. See UL File E194810.. CE European Union 2004/108/EC EMC Directive, compliant with: EN 61326-1; Meas./Control/Lab.
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