ABB UNS0874A programmable control module
Increased awareness of safety integral
design has been brought about by the
introduction of international legislation
IEC 61508. These standards require
formal assessment of hazards to take
place and the use of certified systems
for all hazardous processes.
Comprehensive product testing is
performed at board and system levels
including temperature and power
cycling to eliminate infant mortality
failures.
Rigorous control of any hardware or
software change is maintained and
internal and external audits are
performed at regular intervals to
ensure the highest quality of product
prior to shipment.
Product pre-delivery quality assurance
includes a 100% test to ensure product
quality to the customer on delivery

Third Party Certification
With the ever increasing demand for
independent international certification
and end user specific approvals,
ABB’s products meet the requirements
outlined in the standards and guide
lines as follows:
TUV Rheinland/Berlin Brandenburg
(and Product Services)
Safety Related Applications –
Requirement Class 5 and 6/VDE 0801
Suitable up to Safety Integrity
Level 3 (SIL 3)/IEC61508
see http://www.tuvasi.com
European Union CE Mark
Low voltage directive
EMC directive
USA/Canada
UL/C Industrial Control Equipment
GOST
Russian guidelines for safety
related systems
IEC 61508
Functional safety requirements to
Safety Integrity Levels 1 to 3
NFPA 72
8501 and 8502
EN54