Omron S8M - Page 41

23
Basic Function Details Section 2-4
Current Tripping
Characteristics
The current tripping characteristics vary slightly in different S8M models.
■ S8M-CP04-R and S8M-CP04 (Model without RS-232C Port)
Current Tripping Characteristics When Standard Detection Is Selected
Current Tripping Characteristics When Instantaneous Detection Is
Selected
Note The S8M contains a current-restricting circuit that prevents a current above a
specific value from flowing. The current is thus restricted during the time
required to cut off the output.
■ S8M-CP04-RS (UL Class 2 Output Model)
In addition to the regular current tripping function that cuts off operation at the
user-set tripping current, the Class 2 output model is equipped with a tripping
circuit that cuts off operation if the branch output's current exceeds 4.0 A
(fixed).
Current value
Exam
p
le sam
p
lin
g
chart
Time
Current actually flowing
Converted digital value
1 ms sampling period
4
100
6
20
12
0.5
Time (ms)
Setting
range
Tripping region
Characteristics
when steady
Current-limiting by
internal circuits
(See note.)
Current
(
A
)
4
20
12 0.5
Time (ms)
Setting
range
Current (A)
Characteristics
when steady
Current-limiting by
internal circuits
(See note.)
Tripping region