Related Manuals for Rockwell Automation Allen-Bradley DeviceNet Base RTD
Summary of Contents for Rockwell Automation Allen-Bradley DeviceNet Base RTD
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Page 1: Table Of Contents
Installation Instructions DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Catalog Numbers 1790D-4R0, 1790D-4T0, 1790D-T4R0, 1790D-T4T0 Table of Contents Topic Page Important User Information Environment and Enclosure Prevent Electrostatic Discharge North American Hazardous Location Approval EDS File Requirements Install the CompactBlock LDX I/O Set the Node Address on the Base Block Mount the Base Module Wire the Terminal Block... -
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
DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 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 meters (6562 ft) without derating. -
Page 4: North American Hazardous Location Approval
4 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O North American Hazardous Location Approval 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" are suitable for Les produits marqués "CL I, DIV 2, GP A, B, C, D"... -
Page 5: Install The Compactblock Ldx I/O
DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Install the CompactBlock LDX I/O Follow these steps to install the block: • set the node address on the base block. • mount the base block. • wire the terminal blocks. • connect field wiring. -
Page 6: Mount The Base Module
6 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Mount the Base Module You can mount the base block to a panel or DIN rail. We recommend that you ground the panel or DIN rail before mounting the block. The RTD and thermocouple base blocks do not support any expansion IMPORTANT blocks. - Page 7 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 4. Remove the block and drill two holes in the panel to accommodate each of the mounting screws. 5. Replace the block on the panel and place a screw through each of the two mounting holes.
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Page 8: Wire The Terminal Block
8 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Wire the Terminal Block The following figures show how to wire the terminal blocks. 1790D-4R0 RTD Input Module D-Shell Wiring +24V CH1_B CH0_B CH2_B CH3_B CH1_A +24V +24V CH0_A CH2_A CH3_A •... -
Page 9: Connect Field Wiring
DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 1790D-T4T0 Thermocouple Input Module Terminal Block Wiring +24V CH1_A CH2_A CH0_A CH3_A CH1_B CH2_B CH0_B CH3_B • Wire pin 1 to Field Power (+) 24V DC • Wire pin 2 to Field Power (-) GND Connect Field Wiring System Wiring Guidelines Follow these guidelines when wiring your system:... - Page 10 10 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O The RTD block requires three wires to compensate for lead resistance error. IMPORTANT We recommend that you do not use 2-wire RTDs if long cable runs are required, as it reduces the accuracy of the system. However, if a 2-wire configuration is required, reduce the effect of the lead wire resistance by using a lower-gauge wire for the cable (for example, use AWG #16 instead of AWG #24).
- Page 11 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 2-Wire RTD Configuration Cable Shield (to Ground) Add Jumper CH0_A CH0_B 3-Wire RTD Configuration Cable Shield (to Ground) RTD EXC RTD EXC CH0_A Sense Sense CH0_B Return Return 4-Wire RTD Configuration Leave this sensor wire open Cable Shield (to Ground) RTD EXC RTD EXC...
- Page 12 12 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 2-Wire Potentiometer Interconnection Potentiometer Cable Shield (to Ground) Add Jumper RTD EXC CH0_A CH0_B Return Cable Shield (to Ground) Add Jumper Potentiometer RTD EXC CH0_A CH0_B Return The potentiometer wiper arm can be connected to either the EXC or return terminal, depending on whether you want increasing or decreasing resistance.
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Page 13: Connect The Devicenet Cable
DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Connect the DeviceNet Cable Follow these procedures when connecting the DeviceNet cable to the base block. The required DeviceNet connector is not supplied with the block - you must purchase it separately. There are three types of connectors that you can order directly from Rockwell Automation or your local distributor: 1799-DNETCON –... -
Page 14: I/O Memory Mapping
14 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O I/O Memory Mapping 1790D-4R0, 1790D-T4R0 Input Data File Word Bit Position 15 14 13 12 11 10 9 RTD Input Data Channel 0 RTD Input Data Channel 1 RTD Input Data Channel 2 RTD Input Data Channel 3 Not used S11 S10 S9... -
Page 15: Interpret The Status Indicators
DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Word/Bit Descriptions – 1790D-4T0, 1790D-T4T0 Thermocouple Word Decimal Bit Description Read Word 0 Bits 00…15 Channel 0 input data Read Word 1 Bits 00…15 Channel 1 input data Read Word 2 Bits 00…15 Channel 2 input data Read Word 3 Bits 00…15... -
Page 16: Specifications
16 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Status Indicators Indicator Status Description Network Solid red Unrecoverable communication fault Flashing red Recoverable communication fault Solid green Communication path complete – OK Flashing green Communication path incomplete Device not on line or not powered I/O Channel LED Status Indicators Status Description... - Page 17 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 4-Channel Input RTD Base Module - 1790D-4R0, 1790D-T4R0 Sensors supported Sensor Type Degree Counts Resolution 1…625 Resistance 100 m 10…6250 100 m 1…327 Resistance 10 m 100…3270 10 m 100 Pt/ =0.00385 -200…+850 °C -2000…8500 0.1 °C...
- Page 18 18 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O 4-Channel Input Thermocouple Base Module – 1790D-4T0, 1790D-T4T0 Attribute Value Sensors supported Sensor Type Range Scaling Voltage 10V -76.50…+76.50 mV -7650…+7650 Type B 300…1800 °C 3000…18000 Type E -270…1000 °C -2700…10000 Type J -210…1200 °C -2100…12000...
- Page 19 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O General Specifications Attribute Value Network protocol Slave messaging: • Poll command • Bit Strobe command • Cyclic command • COS command Field power Supply voltage – 24V DC nom Voltage range – 2136…26.4V DC (±10%) Field power dissipation 1.5 W max @ 26.4V DC Status indicators...
- Page 20 20 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Environmental Specifications Attribute Value Temperature, operating IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0…55 °C (32…131 °F) Temperature, storage IEC 60068-2-1 (Test Ab, Unpackaged Non-operating Cold),...
- Page 21 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Certifications Certification (when Value product is marked) c-UL-us UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and Canada. See UL File E195620. European Union 89/336/EEC EMC Directive, compliant with: EN 50082-2;...
- Page 22 22 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Notes: Publication 1790-IN011C-EN-P - January 2015...
- Page 23 DeviceNet Base RTD and Thermocouple CompactBlock LDX I/O Notes: Publication 1790-IN011C-EN-P - January 2015...
- 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.