Allen-Bradley 1771-OBN Installation Instructions
Allen-Bradley 1771-OBN Installation Instructions

Allen-Bradley 1771-OBN Installation Instructions

Dc (10-30v) output module

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To The Installer
Pre installation
Considerations
DC (10 30V) Output Module
Cat. No. 1771 OBN
Installation Instructions
This document provides information on:
important pre-installation considerations
power supply requirements
installing the module
connecting the wiring
using the indicators on the module for troubleshooting
module specifications
The 1771-OBN dc output module is a source output and requires a sink
input. A sink input provides a path to ground and a source output provides
a positive voltage path.
Use this module in all 1771 I/O chassis except 1771-A1, -A2 and 1771-A4
chassis. Refer to the table below for processor compatibility.
Table A
Processor Compatibility Chart
System Type
Use with Processors:
Local
Mini PLC 2/02
Mini PLC 2/16 (cat. no. 1772 LX, LXP)
Mini PLC 2/17 (cat. no. 1772 LW, LWP)
PLC 5/15
Remote (with a 1771 ASB
PLC 2/20
remote I/O adapter)
PLC 2/30 (cat. no. 1772 LP3)
PLC 3
PLC 3/10 (cat. no. 1775 LP4, LP8)
PLC 5/15, Series B and later (cat. no. 1785 LT)
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.
®
(cat. no. 1772 LZ, LZP)
®
, Series B and later (cat. no. 1785 LT)
®
(cat. no. 1772 LP2)
®
(cat. no. 1775 L1, L2, L3, L4)

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Summary of Contents for Allen-Bradley 1771-OBN

  • Page 1 Pre installation The 1771-OBN dc output module is a source output and requires a sink input. A sink input provides a path to ground and a source output provides Considerations a positive voltage path.
  • Page 2 Installation Instructions DC (10 - 30V) Output Module (Cat. No. 1771-OBN) I/O Module Groups Each module condenses 2 full module groups (32 outputs) into each I/O chassis slot. For example: Module group 1 = outputs 00 through 17 Module group 2 = outputs 00 through 17 (module group 2 represents the second set of outputs).
  • Page 3 Installation Instructions DC (10 - 30V) Output Module (Cat. No. 1771-OBN) ATTENTION: Miswiring or shorting the output terminals will cause permanent damage to this module. ATTENTION: Observe proper polarity with dc power connections. Reverse polarity, or application of ac voltage could damage the module.
  • Page 4: Specifications

    Four 4.0A, 250V normal blow fuses (1 per group) 1 Refer to publication 1770 4.1, Programmable Controller Wiring and Grounding Guidelines PLC is a registered trademark of Allen-Bradley Company, Inc. PLC is a registered trademark of Allen-Bradley Company, Inc. PLC is a registered trademark of Allen-Bradley Company, Inc.

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