Publication 1769-UM002B-EN-P - July 2005
2-2 Installation and Wiring
Power Requirements
The modules receive power through the bus interface from the +5V dc/+24V
dc system power supply. Some modules can also be supplied 24V dc power by
an external power supply connected to the module’s terminal block.
Table 2.1 Maximum Current Draw
General Considerations
Compact 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)
Module 5V dc 24V dc
1769-IF4 (Series A)
120 mA
Not applicable
1769-IF4 (Series B)
60 mA
(1)
(1)
If the optional 24V dc Class 2 power supply is used, the 24V dc current draw from the bus is 0 mA.
1769-IF8 (Series A) 70 mA
1769-OF2 (Series A) 120 mA Not applicable
1769-OF2 (Series B)
120 mA
(1)
1769-OF8C (Series A)
145 mA
160 mA
(1)
1769-OF8V (Series A)
125 mA
(1)
(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.
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