Rockwell Automation 1762-IR4 RTD/Resistance Input Module - Manual (Page 20)

Publication 1762-UM003A-EN-P - February 2003
2-2 Installation and Wiring
For specific information required by EN61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
•
Industrial Automation, Wiring and Grounding Guidelines for
Noise Immunity, publication 1770-4.1
•
Automation Systems Catalog, publication B113
Power Requirements The module receives +5V dc and 24V dc power from the system
power supply through the bus interface.
The maximum current drawn by the module is shown in the table
below.
General Considerations 1762 I/O is suitable for use in an 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 Over Voltage Category II
(2)
(IEC 60664-1).
(3)
5V dc 24V dc
40 mA 50 mA
TIP
When you configure your system, ensure that the
total current draw of all the modules does not
exceed the maximum current output of the system
power supply.
(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.