TC · Edition 08.17
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Safety information in accordance with EN 61508-2 for TC 1, TC 2, TC 3
8 Safety information in accordance with
EN 61508-2 for TC 1, TC 2, TC 3
8 .1 General
Scope of application
Machinery Directive (2006/42/EC) with the applicable
harmonized standards
As set out in “Industrial thermoprocessing equipment –
Part 2: Safety requirements for combustion and fuel
handling systems” (EN 746-2).
Aim
The TC 1, TC 2, TC 3 is a control unit pursuant to
EN 60730-2-5, Section 6.3.103.
8 .1 .1 Type of action
The automatic action of the TC 1, TC 2, TC 3 corre-
sponds to Type 2 pursuant to EN 60730-1, Section 1/5.
Operating mode
The TC 1, TC 2, TC 3 is capable of continuous operation
and thus fulfils the characteristic of automatic action
type 2.AD pursuant to EN 60730-2-5, Section 6.4.104.
Switching off the safety-relevant output signals:
the safety-relevant output signals are switched off via
relays. This is a shut-down with micro switch pursuant
to EN 60730-1, Sections 6.4.3.2 and 6.9.2.
Fault lock-out
Non-volatile fault lock-out, action type 2.V pursuant to
EN 60730-2-5, Section 6.4.101.
8 .1 .2 Other classifications
Load
The outputs of the TC are primarily designed for resis-
tive loads with a power factor ≥ 0.95.
Automatic cycles
The tightness control is designed for more than
250,000 automatic cycles.
Fault detection time
On demand
Software class
C (operates in a similar double-channel architecture
with comparison)
8 .1 .3 Electrical data
Safety class
Safety class
Overvoltage category
Overvoltage category III (hard wiring/industrial applica-
tion)
Pollution degree
TC 1, TC 2, TC 3: pollution degree 2 (≥ IP 65).