Spectrum Controls 1762sc-IF8U User Manual
Page 12
2-2
MicroLogix™ 1200 IO Universal Input Module
User's Manual Pub. 0300243‐02 Rev. B
5 VDC
24 VDC
175 mA 21 mA
Use the table below to determine the maximum number of IF8U modules that can be
installed in a MicroLogix system.
Table 2-1
Controller
Max 5V
Bus Current
Max 24V
Bus Current Max # of IF8U Modules
ML1100 800
700
4
ML1200 (24pt.)
400
350
2
ML1200 (40pt.)
600
500
3
ML1400 (All)
1500
1500
7
Section 2.3
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
.
2.3.1 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.