Rockwell Automation 1771-OVN User Manual
Installation Instructions
DC (10-30V) Output Module
Cat. No. 1771–OVN Series B
To The Installer
Important User Information
This document provides information on:
See page
Important User Information 1
Preinstallation Considerations 4
Calculate Power Requirements 4
Initial Handling 5
Key the I/O Chassis 5
Install the Module and Field Wiring Arm 6
Connect Wiring to the Field Wiring Arm 7
Replacing the Fuse 10
For this reference information See page
Intepreting the Status Indicators 10
Hazardous Location Approval 11
Specifications 12
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.
Publication 1771-IN036C-EN-P - July 2002
DC (10–30V) Output Module2
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.
Throughout this publication, notes may be used to make you aware
of safety considerations. The following annotations and their
accompanying statements help you to identify a potential hazard,
avoid a potential hazard, and recognize the consequences of a
potential hazard.
WARNING
!
ATTENTION
!
IMPORTANT
Identifies information about practices or
circumstances that can cause an explosion in a
hazardous environment, which may lead to
personal injury or death, property damage, or
economic loss.
Identifies information about practices or
circumstances that may lead to personal injury or
death, property damage, or economic loss.
Identifies information that is critical for
successful application and understanding of the
product.
Publication 1771-IN036C-EN-P - July 2002
DC (10–30V) Output Module 3
ATTENTION
!
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. Without appropriate precautions,
there may be potential difficulties ensuring
electromagnetic compatibility in other
environments due to conducted as well as radiated
disturbance.
This equipment is supplied as “open type”
equipment. It must be mounted within an
enclosure that is suitably designed for those
specific environmental conditions that will be
present, and appropriately designed to prevent
personal injury resulting from accessibility to live
parts. The interior of the enclosure must be
accessible only by the use of a tool. Subsequent
sections of this publication may contain additional
information regarding specific enclosure type
ratings that are required to comply with certain
product safety certifications.
See NEMA Standards publication 250 and IEC
publication 60529, as applicable, for explanations
of the degrees of protection provided by different
types of enclosures. Also, see the appropriate
sections in this publication, as well as the
Allen–Bradley publication 1770–4.1, (“Industrial
Automation Wiring and Grounding Guidelines”),
for additional installation requirements pertaining
to this equipment.
Publication 1771-IN036C-EN-P - July 2002
DC (10–30V) Output Module4
PreĆinstallation
Considerations
ATTENTION
!
Preventing Electrostatic Discharge
This equipment is sensitive to electrostatic
discharge, which can cause internal damage and
affect normal operation. Follow these guidelines
when you handle this equipment:
• Touch a grounded object to discharge potential
static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component
boards.
• Do not touch circuit components inside the
equipment.
• If available, use a static–safe workstation.
• When not in use, keep modules in appropriate
static–safe packaging.
The Series B 1771-OVN dc output module is a sink output and
requires a source input. A source input provides a positive voltage
path and a sink output provides a path to ground.
Calculate Power Supply
Requirements
You must use this module in a 1771-A1B, -A2B, -A3B, -A3B1,
-A4B or later 1771 I/O chassis. Refer to the table below for
processor compatibility.
Table A Processor Compatibility Chart
System Type Use with Processors:
Local MiniĆPLCĆ2/02 (cat. no. 1772ĆLZ, ĆLZP)
Remote (with a 1771ĆASB
remote I/O adapter)
Do not place this module in the same I/O chassis as the 1771-IX
thermocouple module. You can use this module in the same chassis
as the 1771-IXE thermocouple module.
The controller or I/O chassis power supply, connected through the
backplane of the I/O chassis, powers the logic circuitry of the output
modules. The maximum current drawn from this supply is 330mA.
MiniĆPLCĆ2/16 (cat. no. 1772ĆLX, ĆLXP)
MiniĆPLCĆ2/17 (cat. no. 1772ĆLW, ĆLWP)
PLCĆ5/15, Series B and later (cat. no. 1785ĆLT)
PLCĆ2/20 (cat. no. 1772ĆLP2)
PLCĆ2/30 (cat. no. 1772ĆLP3)
PLCĆ3 (cat. no. 1775ĆL1, ĆL2, ĆL3, ĆL4)
PLCĆ3/10 (cat. no. 1775ĆLP4, ĆLP8)
PLCĆ5/15, Series B and later (cat. no. 1785ĆLT)
Publication 1771-IN036C-EN-P - July 2002
DC (10–30V) Output Module 5
Initial Handling
ATTENTION
Procedures
Keying the I/O Chassis
Place your module in any slot in the chassis
except the leftmost slot, which is reserved for
processors or adapters.
ATTENTION
Observe the following precautions
when inserting or removing keys:
ATTENTION
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,
degradation of performance, or injury.
• Failure to remove power from the backplane
could cause injury or equipment damage due to
possible unexpected operation.
A module inserted into a wrong slot could be
damaged by improper voltages connected through
the wiring arm. Use keying bands to prevent
damage to the module.
!
Position the keying bands in the backplane connectors to correspond to
the key slots on the module.
Place the keying bands:
- between 14 and 16
- between 32 and 34
• insert or remove keys with your
!
fingers
• make sure that key placement is
correct
Incorrect keying or the use of a tool
can result in damage to the
backplane connector and possible
system faults.
I/O chassis
Upper Connector
You can change the position of these bands if
subsequent system design and rewiring makes
insertion of a different type of module necessary.
The 1771–OVN module is 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, proper installation and grounding requirements.
11022ĆI
Publication 1771-IN036C-EN-P - July 2002
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