Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module - Manual (Page 24)

24 Rockwell Automation Publication 1769-UM004B-EN-P - March 2010
Chapter 3 Installation and Wiring
Power Requirements The module receives power through the bus interface from the 5/24V DC
system power supply. The maximum current drawn by the module is:
• 100 mA at 5V DC.
• 40 mA at 24V DC.
General Considerations Compact I/O modules are 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)
Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or
non-hazardous locations only. The following WARNING statement applies to
use in hazardous locations.
(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.
WARNING: Explosion Hazard
• Substitution of components may impair suitability for Class I, Division 2.
• Do not replace components or disconnect equipment unless power has
been switched off or the area is known to be non-hazardous.
• Do not connect or disconnect components unless power has been
switched off or the area is known to be non-hazardous.
• This product must be installed in an enclosure.
• All wiring must comply with N.E.C. article 501-4(b).