Rockwell Automation 2706-F11J_F11JC_F21J_F21JC DL50 INSTALLATION MANUAL - Manual (Page 10)

A–B
2
Chapter
2–1
Introduction to the DL50
This chapter describes the basic features, functions, and operating modes of
the DL50.
The DL50 displays high visibility messages. Messages can be viewed from
up to 240 feet (73.2 meters) away. This high visibility allows messages
(fault, status, etc.) to be seen and responded to quickly.
Messages on the 2706-F11J and -F21J units are displayed in red. Messages
on 2706-F11JC and -F21JC tricolor units may be displayed in red, green or
amber, with individual character control.
The DL50 can receive message data from several sources. Messages are sent
to the DL50 in a simple ASCII format. A DL20 or DL40 display can act as a
controller, or messages can originate from a 1771-T60 Industrial Terminal
running Allen-Bradley Distributed Diagnostics and Machine Control
(DDMC) software. A DL50 can also receive message data from other
intelligent devices such as a computer or BASIC Modules
(Catalog No. 1771-DB / Catalog No. 1746-BAS).
Note: Refer to Chapter 9 for specifications and Appendix D for dimensions.
In addition, the DL50 has:
•
RS-485 port for multidrop communications.
•
RS-232 port for point-to-point communications.
•
Relay output for turning on a lamp, audible alarm, etc.
•
Anti-glare display window.
•
Variety of display modes such as wiping, smooth scrolling, etc.
•
Easy DIP switch configuration.
•
Multiple mounting options including: Flush Mount, Back-to-Back
Mounting, and Chain Suspension. Optional mounting brackets (Catalog
No. 2706-NJ3) are also available.
•
Enclosure rated for NEMA Type 12 & 13 (UL-listed) and designed but
not UL listed for Type 4 (recommended for indoor use only).
•
Universal power supply accepts 100–240 VAC and 50-60 Hz.
•
Firmware (in flash EPROM) can be updated using a personal computer
and Firmware Update Disk (2706-NR4).
•
Fault isolation LEDs show DL50 status and aid in troubleshooting.
•
Diagnostic modes help isolate faults down to a serviceable component.
•
Reduced Brightness Mode prolongs the life of the display’s electronics by
reducing heat generated, thus preventing the DL50 from exceeding the
internal operating temperature limit.
Chapter Objectives
Overview
Features