Download IS/IEC 1131-2 (1992): Programmable Controllers, Part 2: Equipment

IS/IEC 1131-2 (1992)
w
A
60 s f 10 %
I
IA4
1-t
I
60~5~10%
-1
I
I
UC3
LJemin.
SDV
shutdown procedure
of initiates abnormal
-_-_
+
t (s)
Test A : Gradual shutdown / start-up test
P)
5s 5s
max. : 5 s min.
:1s
max.:5s
7’
min.:ls
Ue
0.9 SD&iv. 2 lo %
1I
I I
t (s)
Test C : Slow supply vottage variations
Test B : Fast supply
voltage variations
IEC
Figure 11 - External energy supply variation tests
6.3.7.4
Improper power supply connection tests
Requirement
6.3.7.4.1
reference: item 5 of 3.2.3.
Reversal of d.c. power supply polarity test (withstand test)
The rated voltage of reverse polarity shall be applied for 10 s. The results shall comply
with the conditions stated by the manufacturer (such as fuse blowing).
After the test the basic PC-system shall pass the proper verification procedure
6.3.2.2). Protective devices such as fuses may be reset prior to verification.
6.3.7.4.2
(see
improper voltage level and/or frequency test
For voltage level above the maximum normal service conditions limit U, max. or/and
frequencies beyond the normal service conditions limits F, max. and F,, min., the test shall
be agreed between the user and the manufacturer.
96
W