GB-30
D
GB
F
NL
I
E
Total current for the simultaneous activation of the
valve outputs (terminals 60, 61, 62, 63 and 64)
and of the ignition transformer (terminal 51), pro-
tected by F1/F2: max. 2.5 A.
Total current for the simultaneous activation of the
outputs for air valve and actuator (terminals 65, 66
and 67): max. 2 A.
Signalling contact for operating and fault signals:
max. 1 A, cos φ = 1 (external fuse required).
Number of operating cycles:
The fail-safe outputs (valve outputs V1, V2, V3
and V4) and the air valve output are monitored for
correct functioning and are thus not subject to a
max. number of operating cycles.
Control actuator (terminals 60, 61, 62, 63 and 64):
1,000,000,
signalling contact for operating signals
(terminals 95, 96 and 97):
1,000,000,
signalling contact for fault signals
(terminals 80, 81 and 82):
max. 25,000,
On/Off button:
max. 10,000,
Reset/Information button:
max. 10,000.
Input voltage of signal inputs:
Rated value
120 V AC
230 V AC
Signal “1”
80 – 132 V
160 – 253 V
Signal “0”
0 – 20 V
0 – 40 V
Signal input current:
Signal “1”
max. 5 mA
Fuses, replaceable, F1/F2/F3: T 3.15A H,
pursuant to IEC 60127-2/5.
Does not meet the requirements for safety
extra-low voltage (SELV/PELV).
Designed lifetime
This information on the designed lifetime is based on
using the product in accordance with these operating
instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture):
10 years.
You can find further explanations in the applicable
rules and regulations and on the afecor website
(www.afecor.org).
This procedure applies to heating systems. For
thermoprocessing equipment, observe local regu-
lations.
Safety instructions
Scope of application: as set out in “Industrial
thermoprocessing equipment – Part 2: Safety re-
quirements for combustion and fuel handling sys-
tems” (EN 746-2) when used with fuels and oxidants.
The BCU 4 is suitable for continuous operation (pur-
suant to EN 298:2012-12, Section 3.126) and for
intermittent operation (pursuant to EN 298:2012-11,
Section 3.127).
Action:
Type 2 pursuant to EN 60730-1.
Behaviour under fault conditions:
The output signals are switched off electronically
in accordance with the criteria of automatic action
type B.V.AC.AD.AF.AG.AH (pursuant to EN 60730-
2-5:2015, Section 6.4.3.).
Maximum reaction time in the event of a flame failure:
This corresponds to the safety time during operation
and can be parameterized to between 1 and 4 s.
Software class:
Corresponds to software class C which operates in a
similar double-channel architecture with comparison.
Interfaces
Type of wiring:
Attachment type X to EN 60730-1.
Grounding: via PE wire connection.
Internal voltages are neither SELV nor PELV.
Floating contacts meet the requirements for SELV.
Communication
Safety over EtherCAT
®
technology (FSoE, FailSafe
over EtherCAT) is used for K-SafetyLink communica-
tion. Safety over EtherCAT
®
is a registered trademark
and patented technology licensed by Beckhoff Au-
tomation GmbH, Germany.
The K-SafetyLink technology complies with SIL 3
in accordance with EN 61508 and is standardized
pursuant to IEC 61784-3-12 and ETG 5100.
Safety over EtherCAT
®
uses the fail-safe principle
which means that a safe state is restored in the case
of an inactive signal. In the case of communication
errors, all signals are interpreted as inactive.
Safety-relevant data are transmitted on the basis of
the black channel principle.
All devices connected to the communication system
must meet the requirements for safety extra-low volt-
age (SELV/PELV) (EN 6730-1).
The end user must ensure the unique setting and
parameterization of the SafetyLink address within
the Ethernet network.
The setting and assignment of the addresses must be
verified before commissioning using the verification
procedure described in the extended documentation.