IDEC SmartRelay installation and wiring
15
IDEC SmartRelay Manual
Reliability
Maximum reliability of IDEC SmartRelay devices and com-
ponents is achieved by implementing extensive and cost-ef-
fective measures during development and manufacture.
This includes the following:
• Use of high-quality components;
• Worst-case design of all circuits;
• Systematic and computer-aided testing of all compo-
nents;
• Burn-in of all large-scale integrated circuits (e.g. proces-
sors, memory, etc.);
• Measures preventing static charge when handling MOS
ICs;
• Visual checks at different stages of manufacture;
• Continuous heat-run test at elevated ambient tempera-
ture over a period of several days;
• Careful computer-controlled final testing;
• Statistical evaluation of all returned systems and compo-
nents to enable the immediate initiation of suitable cor-
rective measures;
• Monitoring of major control components, using online
tests (cyclic interrupt for the CPU, etc.).
These measures are referred to as basic measures.
Carrying out tests
You must, however, ensure safety in your plant.
Before finally commissioning a system you should carry out
complete functional testing as well as all the necessary safe
-
ty testing.
In testing, also include any predictable faults that can occur.
This means that you will avoid any danger to the plant or to
people during operation.
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
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