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8
GuardPLC™ 1600 Controllers
Wiring the GuardPLC 1600
Preventing Electrostatic Discharge
ATTENTION
Grounding
The controller is grounded through its DIN rail connection and through a separate
grounding screw, located on the upper left of the housing and marked with the
grounding symbol
connection to earth ground as short as possible.
You must also provide an acceptable grounding path for each device in your
application. For more information on proper grounding guidelines, refer to the
Industrial Automation Wiring and Grounding Guidelines, publication number
1770-4.1.
Connecting the Voltage Supply
The 24V dc voltage supply must feature galvanic isolation (in accordance with
EN 60950 or UL 1950) since inputs and outputs are not electrically isolated from the
processor. It must also meet the requirements of the Safety Extra Low Voltage
(SELV – EN 60950) and Protective Extra Low Voltage (PELV – EN 60204) guidelines.
IMPORTANT
IMPORTANT
Publication 1753-IN001B-EN-P - March 2004
Electrostatic discharge can damage integrated circuits or
semiconductors. Follow these guidelines when you handle the
module:
• Touch a grounded object to discharge static potential.
• Wear an approved wrist-strap grounding device.
• If available, use a static-safe workstation.
• When not in use, keep the GuardPLC controller in its
static-shield box.
. To improve EMC conditions, ground the housing. Keep
Protect the controller with a slow-blowing fuse.
The GuardPLC 1600 can draw up to 8A. 0.5A is needed to operate
the controllers. Up to 7.5A can be used to source voltage power
for inputs and outputs connected to the 1600.
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