Siemens LFS1 Series User manual

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
7782
Flame safeguard
LFS1...
Flame safeguard with approval for continuous operation for the supervision of oil
flames and gas flames in applications with an ionization probe and a photocell
detector RAR9.
Flame safeguard for intermittent operating mode with UV flame detectors QRA2 /
QRA2M / QRA4 / QRA4M / QRA10 / QRA10M.
LFS1 and this Data Sheet are intended for OEMs using the LFS1 in or on their
products.
Use, features
Use
LFS1 units are designed for the supervision of oil burners and gas burners in
combination with control unit LEC1, burner control LME39.xxxRP, or with
programmable logic controllers.
Typical fields of application range from industrial burners up to the highest security level
SIL3 and in the field of ship burners.
Flame supervision:
-Takes place with photocell detector RAR9 with approval for continuous
operation, in the case of LFS1.1 (firing on oil).
-Takes place with an ionization probe with approval for continuous operation or
with UV flame detector QRA2 / QRA2M / QRA4 / QRA4M / QRA10 / QRA10M in
intermittent operation, in the case of LFS1.2 (firing on gas).
Building Technologies
CC1N7782en
18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Use, features
The flame detectors are used in conjunction with control unit LEC1 or with
freely programmable controllers in the following applications:
-Dual supervision of burners / supervision of the main flame or of the ignition
and main flame by 2 flame safeguards with the same or different flame detectors
-Multiflame supervision / plants with several burners whose flames must be
supervised individually by one or several flame detectors, but whose startup and
supervision is carried out centrally and simultaneously by only one control unit
-The flame safeguards are also used as flame indication units in combustion
plants with manual startup
Features -Flame signal display via multicolor LED signal lamp
- Flame signal display via DC 0...10 V output signal (display only)
- Can be parameterized via BCI communication interface
- Potential-free signal contacts with double insulation
- Undervoltage detection
Supplementary documentation
ASN
Title
Documentation
Document type
number
LEC1
Control unit
CC1N7761
Data Sheet
AGK11.7
Connection accessories for small
CC1N7201
Data Sheet
burner controls
AZL21 / AZL23
Display and operating units
CC1N7542
Data Sheet
LFS1
Flame safeguard
CC1A7782
User documentation
PC software for microprocessor
Installation and Operating
ACS410
controlled burner controls and
CC1J7352
Instructions
flame safeguards
OCI410
BCI interface between flame
CC1N7616
Data Sheet
safeguard and PC
QRA4 / QRA4M
UV flame detector
CC1N7711
Data Sheet
QRA2 / QRA2M
UV flame detector
CC1N7712
Data Sheet
QRA10 / QRA10M
RAR9
Photocell detector
CC1N7713
Data Sheet
2/40
Building Technologies CC1N7782en
18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Warning notes
To avoid personal injury or damage to property or the environment, the following
warning notes must be observed.
Do not open, interfere with, or modify the unit.
∂All activities (mounting, installation, service, etc.) must be performed by qualified
staff.
∂Before making any wiring changes in the connection area, completely isolate the
plant from mains supply (all-polar disconnection). Ensure that the plant cannot
be inadvertently switched on again and that it is indeed dead. If this is not
observed, there is a risk of electric shock
∂Take suitable measures to provide protection against accidental contact at the
electrical connections. If this is not observed, there is a risk of electric shock
∂Press the lockout reset button / operation button of the LFS1 or the AGK20 lockout
reset button extension only manually (applying a force of ′10 N) without using any
tools or pointed objects. If this is not observed, there is a risk of loss of safety
functions and a risk of electric shock
∂Units must not be put into operation after a fall or shock, as this can adversely affect
the safety functions even if the units do not exhibit any external signs of damage. If
this is not observed, there is a risk of loss of safety functions and a risk of electric
shock
∂Each time work has been carried out (mounting, installation, service, etc.),
check that the wiring is correct. If this is not observed, there is a risk of loss of
safety functions and a risk of electric shock
∂The mains-powered ionization probe does not offer protection against electric
shock hazards. Protection against accidental contact must be ensured. If this is not
observed, there is a risk of electric shock
∂An ignited UV tube is a source of UV radiation.
If the flame is supervised by optical flame detectors, both detectors must be placed
in a way that ensures there is no direct visual contact between them. If this is not
observed, there is a risk of loss of safety functions
∂Connection of UV flame detectors QRA2M and QRA10M is only permitted if
additional module AGK30 is used. Additional module AGK30 must always be
connected within plug-in base AGK11.7 in terminal areas 1…7. If this is not
observed, there is a risk of loss of safety functions and a risk of electric shock
∂The data line for the AZL2 or other accessories, such as the OCI410 (plugs into
the BCI interface), must only be connected or disconnected when the unit is dead
(all-polar disconnection), since the BCI interface does not ensure safe separation
from the mains voltage. If this is not observed, there is a risk of electric shock
∂Intermittent operation: For safety reasons –self-test of the flame supervision
circuit, etc. –at least one controlled shutdown must take place every 24 hours for
applications with LFS1.2... and UV flame detectors QRA2 / QRA2M / QRA4 /
QRA4M / QRA10 / QRA10M. If this is not observed, there is a risk of loss of safety
functions
∂The separating element supplied can be installed in the area between connection
terminals 9, 10, 11, and 12, and the other terminals (1...7) as a means of achieving
double insulation; refer to the Installation notes chapter. It is particularly important
that the wiring is handled and installed correctly and as specified in the area
around the terminals. If this is not observed, there is a risk of loss of safety
functions and a risk of electric shock
∂The 0...10 V voltage output terminal 7 is not double-insulated from the mains
voltage. It is important to bear this in mind when selecting measuring equipment
(at least CAT III). If this is not observed, there is a risk of electric shock
3/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Standards and certificates
Only in conjunction with
Applied directives:
the flame detectors
∂
Low Voltage Directive
2014/35/EU
∂
Pressure Equipment Directive
2014/68/EC
∂
Gas Appliances Regulation (EU)
(EU) 2016/426
∂
Electromagnetic Compatibility EMC (immunity) *)
2014/30/EU
*) The compliance with EMC emission requirements must be checked after the flame safeguard
is installed in equipment
Compliance with the regulations of the applied directives is verified by the
adherence to the following standards / regulations:
∂Automatic burner control systems for burners
and appliances burning gaseous or liquid fuels
∂Safety and control devices for burners and appliances burning
gaseous and/or liquid fuels —General requirements
∂Automatic electrical controls for household and similar
use Part 2-5:
Particular requirements for automatic electrical burner
control systems
The edition of the standards that applies in each case can be found in
the declaration of conformity.
ΒNote on DIN EN 60335-2-102
Household and similar electrical appliances - Safety - Part 2-102:
Particular requirements for gas, oil and solid-fuel burning appliances having electrical
connections.
The electrical connections of the LFS1 and the AGK11.7 comply with the requirements of
EN 60335-2-102.
EAC Conformity (Eurasian Conformity)
ISO 9001:2015
ISO 14001:2015
OHSAS 18001:2007
China RoHS
Hazardous substances table:
http://www.siemens.com/download?A6V10883536
Marine approval (in preparation):
with LEC1
LFS1.11Ax
●
●
●
●
---
●
---
LFS1.21Ax
●
●
●
●
●
●
●
Marine approvals:
Det Norske Veritas:
Classification A A A A
Germanischer Lloyd:
Classification A
Bureau Veritas EC Code: 31
SIL3 classification to EN 13611:2014:
Suitable for use in safety-related, industrial applications up to safety level SIL3
(safety integrity level 3).
4/40
Building Technologies CC1N7782en 18.04.2018
DIN EN 60730-2-5
DIN EN 13611
DIN EN 298

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Standards and certificates (continued)
The following parameters apply:
Operating
Safety
PFHD
MTTFD
ASN
Flame detector
integrity
SFF
mode
[1/h]
[y]
level up to
LFS1.11A1
RAR9
Continuous
SIL3
1.80E-08
6500
≥99%
LFS1.11A2
operation
LFS1.21A1
Ionization probe
Continuous
SIL3
1.80E-08
6500
≥99%
LFS1.21A2
operation
LFS1.21A1
QRA2 / QRA2M, QRA4 / QRA4M,
Intermittent
SIL2
2.30E-07
510
≥99%
LFS1.21A2
QRA10 / QRA10M
LFS1.21A1
Ionization probe + QRA2 / QRA2M,
Intermittent
SIL2
2.30E-07
510
≥99%
LFS1.21A2
QRA4 / QRA4M, QRA10 / QRA10M
Life cycle
The flame safeguard has a designed life cycle* of 250,000 burner startup cycles which,
under normal operating conditions in heating mode and nominal switching loads,
corresponds to approx. 10 years of service (starting from the date of manufacture on
the nameplate). For industrial applications with reduced switching loads of a maximum
of 0.1 A, the flame safeguard has an increased designed life cycle* of up to 1,000,000
burner startup cycles.
This life cycle is based on the endurance tests specified in standards EN 13611 and EN
298. A summary of the conditions has been published by the European
Control Manufacturers Association (Afecor) (www.afecor.org).
* The designed life cycle is based on use of the flame safeguard according to the
manufacturer’s data sheet. In this case, it is advisable to perform a safety check
or replace the unit. The designed life cycle is not the warranty time specified in the
Terms of Delivery.
Commissioning notes
Concerning connection diagram 7782a06, connection example of two manually
operated burners: Ensure that the drop-out delay time of external relay dis not greater
than 50 ms.
5/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Mounting notes
∂Ensure that the relevant national safety regulations are complied with
∂The flame safeguards can be mounted in any position on the burner, in the
control cabinets, or on the control panels
∂The plug-in base AGK11.7 is available for mounting and is designed for cable
entry from the front, the side, or below.
4 earth terminals provide connections for the earth conductors of burner plant
components such as the ignition transformer. The flame safeguards
themselves are double-insulated; refer to the Installation notes chapter
∂The separating plate must be connected so that it is flat / level with the plug-in
base; refer to red hatched area
77
82
z0
7/
11
15
∂The separating plate must only be plugged into terminal 8
678910 11 2
1
77
8
2z
0
6/
11
15
6/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Installation notes
∂Always run the high-voltage ignition cables separately from the unit and
other cables while observing the greatest possible distances
∂When wiring, ensure that there is enough free space for the BCI connection jack
∂Do not mix up phase and neutral conductors
Note!
For use in power supply systems with non-grounded neutral conductors!
Power supply systems with earthed neutral conductors form the basis of the
Βsystems with non-earthed neutral conductors, terminal 2 of the LFS1 must be connected to the
earth conductor via the RC unit ARC 4 668 9066 0 for ionization current supervision. It must be
made certain that local regulations are complied with (e.g., protection against electric shock) since
120 V AC (50 / 60 Hz) or 230 V AC (50 / 60 Hz) mains voltage produces peak leakage
currents of 2.7 mA.diagramsandcircuitdiagramsoftheLFS1inthisDataSheet.Inpower supply
Note!
Double insulation.
The flame safeguards LFS1 and the terminal bases AGK11.7 including separating plate
element are double-insulated between the terminal areas 1...7 and 9...12. This means
that they feature strengthened insulation; refer also to the Technical data
ΒIf the double insulation needs to be present up to the connected components, the
separating plate element included in the scope of delivery of the AGK11.7 must be
installed in all cases (marked with an arrow in the figure below). As an alternative,
other suitable measures can also be put in place. Safe separation can only be
ensured if all connected components are fitted with a safe separation facility and the
components have been wired as specified. In particular, compliance with the
relevant warning notes must be ensured.chapter.
Separating plate element
7782z04en/1215
Note!
When using QRA2M and QRA10M!
Connect additional module AGK30 in accordance with connection diagram 7782a14.
ΒThe ground terminal of plug-in base AGK11.7 (symbol ) must be
permanently connected to the burner ground. Additional module AGK30 must
always be connected within plug-in base AGK11.7 in terminal areas 1…7.
If this is not observed, there is a risk of loss of safety functions and a risk of
electric shock.
7/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Electrical connection of the flame detectors
It is important to achieve practically disturbance-free and loss-free signal transmission:
∂Never run detector cables together with other cables
–Line capacitance has an impact on the flame signal
–Use a separate cable
∂The ionization probe does not offer protection against electric shock
∂Position the ignition electrode and the ionization probe so that the ignition
spark cannot arc over to the ionization probe; risk of electrical overloads
∂Observe the permissible detector cable lengths; refer to the Technical data
∂Mount and adjust the flame detector so that it only detects the flame to be
supervised in each case
∂Connection of UV flame detectors QRA2M and QRA10M is only permitted
if additional module AGK30 is used
∂Protect the UV cell adequately against the following UV sources: halogen lamps,
welding equipment, special lamps, ignition sparks, as well as high-energy X-rays
and gamma rays
∂Polarity or short circuit at the connection terminals of the RAR9 does not lead to
a flame signal
∂Polarity at the connection terminals of UV flame detectors QRA2 / QRA2M /
QRA4 / QRA4M / QRA10 / QRA10M does not lead to a flame signal.
A short circuit at the connection terminals of UV flame detectors QRA2 / QRA2M
/ QRA4 / QRA4M / QRA10 / QRA10M leads to:
- Fault code LOC10: at operating level (terminal 6 of the LFS1 active)
- No flame signal: test level (terminal 6 of the LFS1 inactive)
∂In general the terminal 5 of LFS1 must not be grounded! When replacing a LFE10
by a LFS1.2 it is particularly important that the ground connection has to be
removed from terminal 10 at the terminal base of LFE10. The ground connection
of QRA10 has to remain unaltered in order to ensure the protection class 1.
∂If the ionization electrode connected to the burner ground short-circuits, there is
no flame signal
Disposal notes
The flame safeguard contains electrical and electronic components and must not
be disposed of together with domestic waste.
Local and currently valid legislation must be complied with.
8/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Design
LFS1 features
Microprocessor-based flame safeguards LFS1 have a plug-in design and consist of the
power supply section, flame signal amplifier, and flame relay with potential-free
contacts.
There is also an operating button with an integrated LED signal lamp, which is located
under a viewing window. The LED is used to provide a multicolor indication of error
status and operational status messages, concerning flame signal strength, for instance.
The flame signal strength can also be measured as a 0...10 V DC signal using a
commercially available voltmeter (at least CAT III) at terminal 7.
Communicating via the BCI interface:
On the underside of the LFS1 in the base area, there is a communication interface (BCI
interface), which is used to change parameters or provide a numerical indication of the
flame signal. When the display and operating unit AZL2 is connected, it is possible to
change parameters such as the flame signal flame-on and flame-out response times. In
addition, the flame signal strength can also be displayed permanently during
continuous burner operation.
Using with the control unit LEC1:
The electrical circuit of the LFS1 is intrinsically safe and, in conjunction with the control
unit LEC1, is tested for proper functioning each time the burner is started up. An
automatic extraneous light test is performed by increasing the sensitivity of the amplifier
during the burner off and purging times of the control unit LEC1. An automatic flame
detector test is performed by increasing the operating voltage of the UV tubes during
the burner off and purging times of the control unit LEC1.
In the case of applications with other control units –such as programmable logic
controllers –the extraneous light test can be activated via the control input at terminal
6. This is not required for ionization supervision.
Undervoltage
∂ Flame OFF signal: From operating position if mains voltage drops lower than
approx. 80 V AC (at UN= 120 V AC)
∂ Flame ON signal: Restart is initiated if mains voltage exceeds approx. 85 V AC (at
UN= 120 V AC)
∂ Flame OFF signal: From operating position if mains voltage drops lower than
approx. 165 V AC (at UN= 230 V AC)
∂ Flame ON signal: Restart is initiated if mains voltage exceeds approx. 170 V AC (at
UN= 230 V AC)
Overvoltage
No shutdown if the voltage limit exceeds UN+10%.
9/40
Building Technologies CC1N7782en
18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Design (continued)
Flame supervision
Flame detector
Data Sheet
QRA2 / QRA2M, QRA10 / QRA10M
N7712
QRA4 / QRA4M
N7711
RAR9
N7713
Ionization probe (must be supplied by customer)
---
Using an ionization Flame supervision by making use of the electrical conductivity of the flame in
probe conjunction with the rectifying effect is only possible with gas and blue-flame burners.
Since the flame signal amplifier responds only to the DC component of the flame signal
(ionization current), a short circuit between the flame detector and functional earth
cannot simulate a flame signal.
Single-electrode operation, i.e., ignition and supervision with a single electrode, is not
possible. Do not activate the test mode switchover using terminal 6 during flame
supervision with ionization probes. Terminal 6 must be connected directly to the phase
conductor at terminal 1 in this case.
Using an ionization
probe and a UV
flame detector QRA
It is possible to connect an ionization probe and a UV flame detector QRA to the
LFS1.2... at the same time. The flame assessment behaves as follows:
Ionization probe
UV flame detector QRA
LFS1.2 flame assessment
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
10/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Type summary and ordering information
The type references given below apply to the LFS1 without plug-in base and without flame detector.
For ordering information for plug-in bases and other accessories; refer to Accessories.
Part no.
Type
Nominal
Use
Flame detector
BCI
Output 0...10
Times
Comparison
voltage
connection
V
tw
1)
1)
types
2)
tan
tab
max.
min.
max.
BPZ:LFS1.11A2
LFS1.11A2
AC 230 V
Oil
RAR9...
∂
∂
5 s
0,3 s
1 s
LAE10
BPZ:LFS1.21A2
LFS1.21A2
AC 230 V
Gas / oil
ION
∂
∂
5 s
0,3 s
1 s
LFE10
QRA2 / QRA2M
QRA4 / QRA4M
QRA10 / QRA10M
BPZ:LFS1.11A1
LFS1.11A1
AC 120 V
Oil
RAR9...
∂
∂
5 s
0,3 s
1 s
LAE10-110V
BPZ:LFS1.21A1
LFS1.21A1
AC 120 V
Gas / oil
ION
∂
∂
5 s
0,3 s
1 s
LFE10-110V
QRA2 / QRA2M
QRA4 / QRA4M
QRA10 /
QRA10M)
Range adjustment for times
From
(Parameter
217.00)
(Parameter
217.01)
(those are added up to the hours indicated above)
0 s
0 s
To
(Parameter 217.00)
(Parameter 217.01)
11.907 s
11.907 s
Increment
---
0.147 s
0.147 s
Factory setting
---
0 s
0 s
Key
tw
tan
tab
¹)
²)
Waiting time
Flame signal flame-on response time
Flame signal flame-out response time
Corresponds to the detection time in the event of a loss of flame (FFDT) EN 298
Factory setting: Refer to note on parameterization
Flame safeguards LFS1 are intended to replace the relevant comparison types
11/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Type summary and ordering information (cont’d)
Note on parameterization:
Use the display and operating unit (display) AZL2 to ensure that the exact value of the required time
is always set as multiples of increments of 0.147 seconds. When parameterizing minimum or
maximum times, a potential tolerance of ±7% must be taken into consideration.
The following applies to minimum values: At least one value which is 7% greater must
be parameterized.
The following applies to maximum values: At least one value which is 7% smaller must
be parameterized.
Example 1:
Calculation:
The flame signal flame-out response time tab must not be set above 5 seconds
(5 seconds –1 second) –7% = 3.65 seconds
Value to be parameterized
(parameter 217.01): Must be the same as or smaller than the calculated value (e.g., 3.528 seconds)
Example 2:
Calculation:
The flame signal flame-on response time tan must be set to at least 5 seconds
(5 seconds –0.3 seconds) + 7% = 5.05 seconds
Value to be parameterized
(parameter 217.00): Must be the same as or greater than the calculated value (e.g., 5.145 seconds)
12/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Accessories
To be ordered
separately:
Flame detector
UV flame detector QRA2…
Refer to Data Sheet N7712
UV flame detector QRA4…
Refer to Data Sheet N7711
UV flame detector QRA10…
Refer to Data Sheet N7712.
Photocell detector RAR9
Refer to Data Sheet N7713
Ionization probe
Supplied by customer
Connection accessories
for small burner controls
Plug-in base AGK11.7
Article no.: BPZ:AGK11.7
∂To connect the flame safeguard LFS1 to the burner plant
∂11-pole screw terminals
∂With enclosed plastic separating plate to ensure safe
separation between terminals 9...12 and terminals 1...7
∂Black plastic
Refer to Data Sheet N7201
Cable gland holder AGK65
Article no.: BPZ:AGK65
For up to 5 PG11 cable glands
Refer to Data Sheet N7201
Cable gland holder AGK65.1
Article no.: BPZ:AGK65.1
For up to 5 M16 x 1.5 cable glands
Refer to Data Sheet N7201
13/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Accessories (continued)
To be ordered
separately:
Others
RC unit ARC46689066 0
Article no.: BPZ:ARC466890660
For the supervision of ionization currents in networks with
non-earthed neutral conductor
Mounting clip for support rail
(The suitability for the particular application has to be
ensured by the user)
Order no. 2309.000
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn, Germany
Phone: [phone] / 505-0
Fax: [phone]
www.rittal.de
Reset button extension AGK20
Article no.: BPZ:AGK20
Adapter KF8896
Article no.: BPZ:KF8896
∂Adapter for replacing LAE10 and LFE10 with LFS1.
∂Ensures mechanical height adjustment and
correct terminal assignment
Refer to dimensions
Signal cable AGV50.100
Article no.: BPZ:AGV50.100
Signal cable for AZL2, with RJ11 connector, cable length 1
m, pack of 10
Signal cable AGV50.300
Article no.: BPZ:AGV50.300
Signal cable for AZL2, with RJ11 connector, cable length
3 m, pack of 10
Additional module AGK30
Article no.: S55856-Z301-A100
∂For establishing compatibility of the LFS1.2 with QRA2M
and QRA10M
∂With 4 connecting wires for connection in plug-in
base AGK11.7
14/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Accessories (continued)
To be ordered
separately:
Service tools
Optical interface OCI400
Article no.: BPZ:OCI400
∂Optical interface between flame safeguard and PC
∂Facilitates viewing and recording setting parameters on
site using the ACS410 software
Refer to Data Sheet N7614
OCI410...
Article no.: BPZ:OCI410
BCI interface module between flame safeguard and PC
Facilitates viewing, processing, and recording setting
parameters on site using the ACS410 software
Refer to Data Sheet CC1N7616
Modbus converter or BCI interface converter OCI412.11
Article no.: BPZ:OCI412.11
The unit is used as an interface converter...
∂…between flame safeguard LFS1 in the proprietary BCI
communication protocol for building automation
systems or PLC systems
The interface on the outlet side is based on the RS-
485 standard.
PC software ACS410
Article no.: BPZ:ACS410
For setting the parameters and for visualizing the
flame safeguards
Refer to Software Documentation J7352
Display and operating Display and operating unit AZL21.00A9
unit Article no.: BPZ:AZL21.00A9
Display and operating unit, choice of mounting methods,
8-digit LCD, 5 buttons, BCI interface for LFS1, degree of
protection IP40
Refer to Data Sheet N7542
Display and operating unit AZL23.00A9
Article no.: BPZ:AZL23.00A9
Display and operating unit, choice of mounting methods,
8-digit LCD, 5 buttons, BCI interface for LFS1, degree of
protection IP54
Refer to Data Sheet N7542
15/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Technical data
General unit data
Mains voltage (rated voltage)
For grounded and non-grounded networks
∂
LFSx.xxA1
120 V AC
∂
LFSx.xxA2
(also suitable for 100 V AC networks).
230 V AC
Mains frequency
50...60 Hz
Internal consumption
5 VA
Rated surge voltage
Overvoltage category III:
4 kV for the entire LFS1 unit
2.5 kV for the creepage distances or air gaps
due to voltage limitation measures
Basis of calculation for air gaps and
Overvoltage category III and degree of
creepage distances
contamination 2 for 230 V AC in accordance
with
DIN EN 60730-1:
- Reinforced insulation between terminal
areas 1...7 and 9...12
- Normal insulation between terminal areas
9...10 and 11...12
External fuse (optional)
Max. T6.3H250V to IEC 60127-2
Internal fuse for terminals 11 / 12 (fuse
T1.6L250V to IEC 60127-4
cannot be replaced)
External current limitation for terminals 9 /
Example: External fuse T1.6A
10
Permissible mounting position
Optional
Weight
∂
LFS1.11A1
115 g
∂
LFS1.11A2
115 g
∂
LFS1.21A1
148 g
∂
LFS1.21A2
144 g
Safety class
To DIN EN 60730-1:
∂
Safety class I
For applications without safe separation.
Protection against electric shock is achieved
through double or reinforced insulation.
Provision for the protective earth connection
is made in the plug-in base AGK11.7. When
replacing LAE10 / LFE10 with KF8896 and
LFS1, the maximum safety class that can be
∂
Safety class II
achieved is I.
For applications with safe separation.
Protection against electric shock is achieved
through double or reinforced insulation.
Degree of protection
IP40, to be ensured through mounting
Degree of contamination
Degree of contamination 2 to DIN EN 60730-1
Software class
Class C to DIN EN 60730-2-5
2-channel structure
Minimum flame safeguard self-test frequenc
2 x per second for continuous operation with
ionization probe or RAR9
Detection time in the event of loss of flame
Max. 1 s for LFS1 (including flame detector)
Reaction time in the event of loss of flame
Max. 1 s for LFS1 with LEC1
Voltage output at terminal 7
DC 0…10 V
Increment DC 40 mV
16/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Technical data (continued)
Permissible cable lengths ¹)
At a line capacitance of 100 pF/m, unshielded
∂ Terminals 3 to 5
Max. 20 m ²)
∂
Terminal 6
Max. 20 m
∂
Terminal 7
Max. 3 m
∂ Terminals 9 to 12
Max. 20 m
Max. 300 m ¹)
In the event of reduced current rating of max.
0.01 A, 24 V DC / 24 V AC and cosφ= 1.
The Ölflex Smart cable type 108 / 4 x 0.75
∂
BCI connection
mm²is ideal
Max. 3 m
Connectable cross-sectional areas
AGK11.7
∂ Terminals 1...7 and 9...12
Min. 0.5 mm²and max. 1.5 mm²
∂ Auxiliary terminals N, PE, 31
Solid or stranded wire with ferrule
Min. 0.50 mm²and max. 1.5 mm²
Solid or stranded wire with ferrule (when
connecting 2 solid or stranded wires per
terminal, the same cross-sectional areas must
be used for each terminal)
Specifications as per EN 60730-1:
Type of shutdown or interruption of each
Shutdown with micro switch, 1-pole
circuit
Mode of operation type 2 B
Perm. current rating
Terminals 3 and 5 (flame detectors)
Refer to Flame detectors chapter
Terminal 6 (test mode switchover)
Max. 1 mA
Terminal 7 (voltage output 0...10 V)
Max. 0.1 mA
Terminals 11 and 12 (NO switching output)
Max. 1 A, cosι ″0.6
For a maximum of 250,000 burner startup
cycles
Max. 0.1 A, cosι= 1
For a maximum of 1,000,000 burner startup
cycles
Terminals 9 and 10 (NC switching output)
Max. 0.1 A, cosι ″0.6
For a maximum of 250,000 burner startup
cycles
Max. 0.1 A, cosι= 1
For a maximum of 1,000,000 burner startup
cycles
¹) For longer distances, use low-capacitance cables, maximum 2 nF total,
unshielded ²) Run detector cables separately, at least 5 cm away from other cables
Permissible switching voltage
Terminal 6 (test mode switchover)
Mains voltage +10%
Terminals 11 and 12 (NO switching output)
DC 125 V
AC 250 V
Terminals 9 and 10 (NC switching output)
DC 125 V
AC 250 V
17/40
Building Technologies CC1N7782en
18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Technical data (continued)
Environmental
Storage
DIN EN 60721-3-1
conditions
Climatic conditions
Class 1K3
Mechanical conditions
Class 1M2
Temperature range
-20...+60°C
Humidity
<95% r.h.
Transport
DIN EN 60721-3-2
Climatic conditions
Class 2K2
Mechanical conditions
Class 2M2
Temperature range
-20...+60°C
Humidity
<95% r.h.
Operation
DIN EN 60721-3-3
Climatic conditions
Class 3K5
Mechanical conditions
Class 3M2
Temperature range
-20...+60°C
Humidity
<95% r.h.
Installation altitude
Max. 2,000 m above sea level
Attention!
Condensation, formation of ice, and ingress of water are not permitted. If this is
not observed, there is a risk of loss of safety functions and a risk of electric
shock.
Signal cable AGV50
Display ↑BCI
Signal cable
Cable length AGV50.100
Cable length AGV50.300
Place of installation for signal cable with
connector
To connect display and operating
unit AZL2
White, unshielded cable
Internal conductor 4 x 0.141 mm²
Each cable with 2 RJ11 connectors
1 m
3 m
Under the burner hood (additional
measures for SKII to EN 60730-1)
18/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Technical data (continued)
Measuring circuits for
detector current
measurement
Ionization probe
QRA2
UV flame detector
/ QRA4 / QRA4M / QRA10
Photocell detector
RAR9
QRA... RAR9...
ION
UV flame detector
QRA2M / QRA10M
QRA...
AGK11.7
31
PE N
BN BK
GN/YE
BU
AGK30
Key
A
Incidence of light from the flame
C
Electrolytic capacitor 100 µF, 10 V DC
ION
Ionization probe
M
Microammeter
QRA
UV flame detector
RAR9
Photocell detector
Attention!
High-voltage ignition may affect the ionization current.
Possible remedy: Swap the ignition transformer's primary connection.
19/40
Building Technologies CC1N7782en 18.04.2018

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Technical data (continued)
Flame supervision with ionization probe
At mains voltage
Values apply to factory setting of parameters 182 = 0
120 V AC
230 V AC
Detector voltage between ionization probe and ground
Approx. 270 V AC
Approx. 270 V AC
(AC voltmeter Ri ″10 Mς)
Switching threshold (limit values):
Switching on (flame ON) (DC ammeter Ri ′5 kς)
″DC 1.5 µA
″DC 1.5 µA
Switching off (flame OFF) (DC ammeter Ri ′5 kς)
′DC 0.5 µA
′DC 0.5 µA
Detector current required for reliable operation
″DC 3 µA
″DC 3 µA
Switching threshold in the event of poor flame during operation
Approx. DC 2 µA
Approx. DC 2 µA
(LED flashes green)
Possible detector current with flame (typical)
20 µA DC
20 µA DC
Flame supervision with UV flame detector QRA2 / QRA2M /
At mains voltage
QRA4 / QRA4M / QRA10 / QRA10M
Values apply to factory setting of parameters 182 = 0
120 V AC
230 V AC
Detector voltage at QRA2 / QRA2M / QRA4 / QRA4M / QRA10 /
QRA10M (with no load)
Terminal 6 OFF (test mode)
Approx. 290 V AC
Approx. 290 V AC
Terminal 6 ON (operating mode)
Approx. 250 V AC
Approx. 250 V AC
Switching threshold (limit values):
Switching on (flame ON)
″20 µA DC
″20 µA DC
Switching off (flame OFF)
′5 µA DC
′5 µA DC
Detector current required for reliable operation
″24 µA DC
″24 µA DC
Switching threshold in the event of poor flame during operation
Approx. 24 µA DC
Approx. 24 µA DC
(LED flashes green)
Possible detector current with flame (typical):
Test mode
700 µA
700 µA
Operating mode
550 µA
550 µA
Flame supervision with photocell detector RAR9
At mains voltage
Values apply to factory setting of parameters 182 = 0
120 V AC
230 V AC
Switching threshold (limit values):
- Switching on (flame ON)
″6.5 µA DC
″6.5
µA DC
- Switching off (flame OFF)
′3.5 µA DC
′3.5
µA DC
Detector current required for reliable operation
″10 µA DC
″10 µA DC
Switching threshold in the event of poor flame during operation
Approx. 10 µA DC
Approx.
10 µA DC
(LED flashes green)
Possible detector current with flame (typical)
65 µA DC
65 µA DC
Possible detector current in the event of glare, e.g., with artificial
70 µA DC
70 µA DC
light (leads to lockout with error message LOC10)
The detector current values specified in the table only apply to the factory settings and under the
following conditions:
- Mains voltage 120 V AC / 60 Hz or 230 V AC / 50 Hz, depending on type
- Ambient temperature 23 °C
- Parameter 182 in accordance with the factory setting from the following table
20/40
Building Technologies CC1N7782en 18.04.2018