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Installation Instructions
Use this document as a guide when installing the 1771-OFE analog
output module.
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Rockwell Automation be
responsible or liable for indirect or consequential damage resulting
from the use or application of these products.
Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Rockwell Automation does not
assume responsibility or liability (to include intellectual property
liability) for actual use based upon the examples shown in this
publication.
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Summary of Contents for Allen-Bradley 1771-OFE
- Page 1 Installation Instructions Use this document as a guide when installing the 1771-OFE analog output module. Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been...
- Page 2 Analog Output Module Allen–Bradley publication SGI–1.1, Safety Guidelines for Application, Installation, and Maintenance of Solid–State Control (available from your local Rockwell Automation office), describes some important differences between solid–state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication. Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.
- Page 3 Analog Output Module Environment and Enclosure 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 without derating. This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11.
- Page 4 When not in use, keep modules in appropriate static–safe packaging. The 1771-OFE module can be used with any 1771 I/O chassis. Compatibility and data table use is listed below. The analog output module receives its power through the 1771 I/O chassis backplane from the chassis power supply.
- Page 5 Analog Output Module Place your module in any I/O module slot of the I/O chassis except for the left-most slot. This slot is reserved for PC processors or adapter modules. Group your modules to minimize adverse affects ATTENTION from radiated electrical noise and heat. We recommend the following.
- Page 6 The output then enables with the value that you send it in the block transfer write block. • We ship 1771-OFE modules with the LAST STATE configuration jumpers in the MID position. Switch 1 of the I/O rack affects the function of the ATTENTION configuration settings as indicated in the table below.
- Page 7 Analog Output Module To set the last state configuration jumpers, proceed as follows. Do not insert modules ATTENTION into or remove modules from the I/O chassis while system power is ON. Failure to observe this rule could result in damage to module circuitry and unexpected machine operation.
- Page 8 Analog Output Module If you ordered the voltage output version, you must set several configuration jumpers located inside the module on the circuit board. LAST STATE Observe the following precautions ATTENTION when inserting or removing keys: • Insert or remove keys with your fingers.
- Page 9 Analog Output Module Remove power from the 1771 I/O chassis backplane and field wiring arm before removing or installing an I/O module. • Failure to remove power from the backplane or wiring arm could cause module damage, degra- dation of performance, or injury. •...
- Page 10 Analog Output Module The 1771–OFE modules are a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771–IN075 for detailed information on acceptable chassis and proper installation and grounding requirements. Limit the maximum adjacent slot power dissipation to 10W maximum. Connect your I/O devices to the cat.
- Page 11 Analog Output Module Use the following diagrams to ground your I/O chassis and analog input module. Follow these steps to prepare the cable: Refer to Wiring and Grounding Guidelines, publication 1770-4.1 for additional information.
- Page 12 Analog Output Module Because of the many analog devices available and the wide variety of possible applications, you must configure the module to conform to the analog device and specific application that you have chosen. Use the configuration information below to configure your module to your specifications.
- Page 13 Analog Output Module The front panel of the module contains a green RUN and a red FLT (fault) indicator. Possible module fault causes and corrective actions are shown in the table below. The module allows a five-word read block transfer for rudimentary program or hardware debugging.
- Page 14 Analog Output Module The fifth word contains the status of each DAC word; that is, whether data is out of range or scaling is improperly programmed. The fifth word also indicates that I/O RESET has been established (when the processor is in the PROG/TEST or RUN mode).
- Page 15 Analog Output Module WARNING • • • • AVERTISSEMENT • • • •...
- Page 16 Analog Output Module µ µ...
- Page 17 Analog Output Module ° ° ° °...
- Page 18 Analog Output Module...
- Page 19 Analog Output Module IMPORTANT • • • • •...
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