Rockwell Automation 2706 DL40 HARDWARE USER MANUAL - Manual (Page 126)

Chapter 11
Installation and Wiring
11 – 5
Install the DL40 Message Display using Publication NFPA 70E, Electrical
Safety Requirements for Employee Workplaces. In addition to the NFPA
general guidelines, we have added some specific guidelines.
Careful cable routing helps minimize electrical noise. Route incoming power
to the module by a separate path from the communication cables.
Do not run communications wiring and power wiring in the same
conduit!
Where wire paths must cross, make their intersection perpendicular.
With solid state systems, grounding helps limit the effects of noise due to
electromagnetic interference (EMI). To avoid problems caused by EMI, use
shielded cables.
To avoid problems caused by electrostatic discharge (ESD), ground the
chassis using the Chassis Ground at the rear of the DL40. See Figure 11.5
and Figure 11.6
Note: A jumper between Earth Ground and Chassis Ground is installed at the
factory. It can be removed to meet your requirements. See Figure 11.15.
Before connecting the Dataliner DL40 Message Display to the incoming
power, verify that the power source and display type are in agreement.
The DL40 Message Display will operate from 85–265 Volts AC, 47–63 Hz.
After the DL40 has been mounted you can connect the necessary wiring.
Figure 11.5 and Figure 11.6 illustrate the back of the DL40. Two versions of
the DL40 are shown: Remote I/O and Parallel Port.
The drawing of the Remote I/O version shows the location of the Remote I/O
Connector and the Rack Number DIP switch. The drawing of the Parallel
Port version shows the location of the Parallel Port (data lines, strobe lines,
and +12 volt power supply). Both the Remote I/O and the Parallel Port
versions show the location of the RS–485 port, Remote Reset, Alarm Relay
terminals, Keyboard port, RS–232 port, and the power connector, as well as
the options DIP switch and Serial Address DIP switch.
Electrical Precautions
Input Voltage Requirements
Wiring the DL40