Rockwell-automation 1790-XXXX CompactBlock LDX I/O DeviceNet RTD and T Manual de usuario

Publication 1790-IN011B-EN-P - April 2003Installation InstructionsDeviceNet Base RTD and Thermocouple CompactBlock LDX I/O(Cat. Nos. 1790D-4R0, -4T0,

10 Publication 1790-IN011B-EN-P - April 2003When using a 3-wire configuration, the block compensates for resistance error due to lead wire l

11Publication 1790-IN011B-EN-P - April 2003To ensure that the lead values match as closely as possible:• keep lead resistance as small as pos

12 Publication 1790-IN011B-EN-P - April 20033-Wire RTD Configuration4-Wire RTD ConfigurationWiring Resistance Devices (Potentiometers)Potent

13Publication 1790-IN011B-EN-P - April 20033-Wire Potentiometer InterconnectionTIPThe potentiometer wiper arm can be connected to either the

14 Publication 1790-IN011B-EN-P - April 2003Connect the DeviceNet CableFollow these procedures when connecting the DeviceNet cable to the ba

15Publication 1790-IN011B-EN-P - April 2003Once you have properly wired the drop line to the connector, attach the connector to the block. If

16 Publication 1790-IN011B-EN-P - April 20031790D-4T0, -T4T0 Input Data FileWord/Bit Descriptions for 1790D-4T0, -T4T0 Thermocouple ModuleWo

17Publication 1790-IN011B-EN-P - April 2003Troubleshoot with the IndicatorsThe 1790D I/O block has the following indicators:• module status•

18 Publication 1790-IN011B-EN-P - April 2003DeviceNet RTD and Thermocouple Base Block SpecificationsThe following table contains specificati

19Publication 1790-IN011B-EN-P - April 20031 Refer to publication 1770-4.1, Programmable Controller Wiring and Grounding Guidelines.2 See the

2 Publication 1790-IN011B-EN-P - April 2003Important User InformationBecause of the variety of uses for the products described in this publi

20 Publication 1790-IN011B-EN-P - April 20034-Channel Input RTD Base Module Specifications1790D-4R0, 1790D-T4R0Inputs per module 4 channel,

21Publication 1790-IN011B-EN-P - April 20034-Channel Input Thermocouple Base Module SpecificationsGeneral SpecificationsDeviceNet Power Suppl

22 Publication 1790-IN011B-EN-P - April 2003Input Impedance 5M ohmGeneral SpecificationsDeviceNet Power Supply voltage - 24V dc nominalVolta

23Publication 1790-IN011B-EN-P - April 2003IMPORTANTInput and output wiring must be in accordance with Class 1, Division 2 wiring methods and

Publication 1790-IN011B-EN-P - April 2003 PN20957657-64

3Publication 1790-IN011B-EN-P - April 2003ATTENTION!Identifies information about practices or circumstances that can lead to personal injury

4 Publication 1790-IN011B-EN-P - April 2003ATTENTION!Environment and EnclosureThis equipment is intended for use in a Pollution Degree 2 ind

5Publication 1790-IN011B-EN-P - April 2003Installing CompactBlock LDX I/OFollow these steps to install the block:1. Set the node address on t

6 Publication 1790-IN011B-EN-P - April 2003Mount the Base BlockYou can mount the base block to a panel or DIN rail. We recommend that you gr

7Publication 1790-IN011B-EN-P - April 20035. Replace the block on the panel and place a screw through each of the two mounting holes. Tighten

8 Publication 1790-IN011B-EN-P - April 2003Wire the Terminal BlocksThe following figures show how to wire the terminal blocks.1790D-4R0 RTD

9Publication 1790-IN011B-EN-P - April 2003Connect Field WiringSystem Wiring GuidelinesFollow these guidelines when wiring your system:• use s