Special Considerations For C500-Oa225; Number Of Points Per Common Turned On Simultaneously - Omron SYSMAC C500 Installation Manual

Specifications
Special Considerations
for C500-OA225
Number of Points Per
Common Turned ON
Simultaneously
74
The maximum current value allowed per point differs depending on the ambi-
ent temperature and the number of points per common that are ON simulta-
neously. The graph below shows the relationship between the allowable cur-
rent per point and the number of points ON per common. Be sure not to ex-
ceed the values depicted in the graph.
1.0
Current
value
0.8
per
point (A)
0.6
0.4
0.2
0 1 2
Number of points per common
that can be turned ON simultane-
ously.
The graph below shows the value of an surge current and the time it takes
the current to level to a steady stream of current (current-carrying time). The
curved line in the graph represents the maximum value of surge current at
which the Unit can operate properly. It is suggested that when opening and
closing a load with a large surge current, to keep the value of the surge cur-
rent to half the value shown the graph (within the shaded area).
Inrush
15
Current
(A. Peak)
10
5
0
10 30 50 100 200
Current-carrying time (ms)
3 4 5 6 7 8
500 1,000 5.000
Appendix B
Environment temperature
25 C
40 C
55 C