Safety Applications; Environmental Protection; Energy Efficiency - Siemens SIRIUS 3RT Series System Manual

System overview
1.5 System properties
1.5.11

Safety applications

SIRIUS switching devices are often used in parts of the system which have a bearing on
safety. The Safety Integrated concept enables uniform solutions to be created, from safety
relays through to fail-safe communication via AS-Interface or PROFIBUS DP.
Example
SIRIUS contactor in a safety application:
● Motor starter protectors in combination with undervoltage release and contactor:
PL d (ISO 13849-1) or SIL 2 (IEC 62061)
● Contactor assemblies for star-delta (wye-delta) start:
PL e (ISO 13849-1) or SIL 3 (IEC 62061)
1.5.12

Environmental protection

Siemens attaches great importance to the subject of eco-design. Our company-internal
standard SN 36350 on environmentally compatible product design has been permanently
integrated in our product development processes since 1993. Our production meets the
highest quality and environmental standards.
The CO
for our products. All Siemens products are eco-labeled in accordance with
DIN EN ISO 14021 as a matter of course. This process of eco-labeling makes our
environmentally-compatible product design more transparent and ensures that a continual
improvement in the CO
1.5.13

Energy efficiency

The devices which make up the SIRIUS modular system are designed for minimum power
loss, and passively and actively support the realization of efficient systems and applications.
Product example soft starters
● Reduction of peak loads by up to 60%.
– The soft starter protects the connected products and systems both on the connection
● Minimum intrinsic power loss thanks to integrated bypasses.
– The complete soft starter portfolio bridges the thyristors during operation by means of
– 1 W power loss requires 3 W cooling expenditure. Typical frequency converters
● The most space-saving starter ever.
– Volume reduction compared to typical contactor assemblies for star-delta (wye-delta)
– Volume reduction compared to typical frequency converters: up to 98%.
38
balance is another important topic as regards the manufacturing processes used
2
balance can be observed.
2
and drive sides.
bypasses and thus enables the intrinsic power loss to be reduced to contactor level.
generate a power loss which is 30 times higher than that created by a comparable soft
starter (bypass operation) and thus require 90 times the cooling expenditure.
start: 66 %.
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03