Campbell-scientific LR4 Four Channel Latching Relay Module Manual de usuario Pagina 1

LR4 Four ChannelLatching Relay ModuleRevision: 6/12Copyright © 2010-2012Campbell Scientific, Inc.

LR4 Four Channel Latching Relay Module 6. LED Indicators Five LEDs are on the control module. The main status LED indicates a successful power up by

LR4 Four Channel Latching Relay Module 7.2 SDI-12 Addresses The LR4 can be set to one of ten addresses (0 to 9) which allows up to ten LR4 modules to

LR4 Four Channel Latching Relay Module SDI-12 Command Command Function/Description Values Returned aMC! aMCn! Same as aM! aC! Concurrent Measureme

LR4 Four Channel Latching Relay Module 7.4 SDI-12 Programming Examples for CRBasic Datalogger The following CRBasic examples can be used with the CR8

LR4 Four Channel Latching Relay Module • The CR200(X) does not support setting all four relays in one command. The individual relay commands can onl

LR4 Four Channel Latching Relay Module FIGURE 6. Communication Jumpers 8. Using Modbus The LR4 can operate in a Modbus mode. The three internal ju

LR4 Four Channel Latching Relay Module TABLE 2. Modbus/RS-232 Wiring LR4 Terminals Description Datalogger Terminal GND Power Ground and Shield G P

LR4 Four Channel Latching Relay Module 8.2 Modbus Baud Rate The default baud rate is 19200. Other baud rates are possible. Consult the factory if o

LR4 Four Channel Latching Relay Module 9. Firmware Update Procedure FIGURE 7. Program Mode Jumper The firmware on the LR4 can be updated by using a

LR4 Four Channel Latching Relay Module • From the Hyperterminal menu, select Transfer  Send Text File. er begins, n error is indicated by a flashing

LR4 Four Channel Latching Relay Module 14

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LR4 Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to s

LR4 Table of Contents ii List of Figures 1. LR4 Latching Relay Module... 2 2. For

LR4 Four Channel Latching Relay Module 1. General Description The LR4 module uses latching relays that provide the following benefits: • Low power c

LR4 Four Channel Latching Relay Module 3. Relay Details Relay #1 and Relay #2 Contacts: 2 independent Form A (SPST) Maximum Voltage Ratings: 30

LR4 Four Channel Latching Relay Module FIGURE 3. Form A - State = 0 FIGURE 4. Form C - State = 1 FIGURE 5. Form C - State = 0 4.2 Relay Contac