Rockwell Automation Publication 1790-UM001B-EN-P - April 2021
47
Appendix
A
Install, Wire, and Configure PROFIBUS Modules
This appendix tells you how to:
•
determine the power requirements for the PROFIBUS modules
•
avoid electrostatic damage
•
install the module
•
view the module memory map
•
access the input image file
•
configure channels
Power Requirements
Modules require external supplies for both system power and for the analog
I/O channels.
lists the maximum power.
Module Installation
CompactBlock LDX I/O modules are suitable for use in a commercial or light
industrial environment when installed in accordance with these instructions.
Specifically, this equipment is intended for use in clean, dry environments
(Pollution degree 2
(1)
) and to circuits not exceeding overvoltage Category II
(2)
(IEC 60664-1)
(3)
.
General Considerations
Reducing Noise
Most applications require installation in an industrial enclosure to reduce the
effects of electrical interference. Analog inputs and outputs are highly
susceptible to electrical noise. Electrical noise coupled to the analog inputs
reduces the performance (accuracy) of the module.
Table 39 - Analog I/O Channel Power
PROFIBUS power
Supply voltage – 24V DC nom
Voltage range – 19.2…28.8V DC
Power dissipation – 2 W max @ 28.8V DC
Field power
Supply voltage – 24V DC nom
Voltage range – 21.6…26.4V DC (+ 10%)
Power dissipation – 1.5 W max @ 26.4V DC
(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs
except that occasionally a temporary conductivity caused by condensation shall be expected.
(2) Over Voltage Category II is the load level section of the electrical distribution system. At this
level, transient voltages are controlled and do not exceed the impulse voltage capability of
the product’s insulation.
(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical
Commission (IEC) designations.
Содержание Allen-Bradley 1790D-N0C2
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