SYSTEM 3000 / 4000
FLAME AMPLIFIER MODULE
3001
TECHNICAL DESCRIPTION
EDITION TB 3001- REV 2
BFI – Automation Dipl.-Ing. K.-H. Mindermann GmbH, Eggerscheidter Str. 57, D-40883 Ratingen
Phone +49 (0) 2102 96 82 – 0, Fax +49 (0) 2102 9682 – 42
Email: info@bfi-automation.de
1
Flame amplifier module
3001
- Precise display of intensity
- Fault diagnosis
- Setting of threshold value
- Variable closing delay time
- Variable OFF delay time
- Relay signal output
- Pre-alarm
Application
The flame scanner 3001 is a system plug-in unit
of the 3000 line, which, in connection with the
flame detectors of the system, is providing fullscale flame monitoring for any burner output,
fuel, and combustion process.
The flame monitoring system 3000/4000 is
tested by TÜV in accordance with EN 230 and
EN 298 and approved according to DIN DVGW.
It meets the requirements of TRD 411 to 414.
The plug-in unit is approved for continuous operation because of continuous fully electronic
fail-safe checking of its function.
Front view
70,78
(14TE - 0,34 )
BFI
8
1: LED time I
Sensitivity
78
456
45 6
x 10
1
x1
Flame Signal
78
901
23
78
90 1
456
Sensitivity
7: LED MA – M-alarm
8: sensitivity I
II
456
78
90 1
3
23
x1
5: sensitivity II
6: threshold value (MT)
RM
x 10
23
5
2
Flame
45 6
128,70
RF
M-Alarm
MT
3: LED RM – monitoring channel
4: LED time II
MA
6
2: LED RF – evaluation channel
I
I
23
78
90 1
23
901
7
Time
Time
4
3001
2
Function
The self-checking and fail-safe flame scanner
3001 contains two separate signal processing
channels of differing layout, which are being synchronised by a processor. Internal and external
faults of any kind trigger automatically immediate
actuation of the safety devices.
c) Defects in the electronic system of the flame
detector.
EVALUATION CHANNEL (RF)
The evaluation channel contains all the necessary precision components which are providing
the sign-off times differing per level. The sign-off
times are selected per DIP switches (S2/S3).
Further, the evaluation channel supports the setting of the hysteresis for pre-selecting the switching threshold "Flame on" (DIP switch S1). In
connection with the monitoring channel the
evaluation channel addresses the output relay K
101.
Two independent monitoring levels (time level I,
time level II) can freely be selected by means of
an external control signal. Each level is described by its sensitivity setting and sign-off time.
In this way a fuel- and load-related optimisation
of flame monitoring is easy to implement. The
connection of a second flame detector in parallel
or alternating operation is possible.
The output signal of the flame detector is transmitted as a pulse message via a filter and pulse
shaper stage to the sensitive controllers. Two rotary switches are available per time level for setting the desired signal amplification. This flame
signal is distributed on three further function
channels:
1. Measuring channel
2. Monitoring channel
3. Evaluation channel
After satisfactory start-up of the monitoring system 3000 the LED RM lights up immediately at
flame signal, whereas the LED RF switches timedelayed depending on selected sensitivity and
hysteresis stage. The important floating relay
contact K 101 "Flame on", assigned to the external safety circuit, is fused inside the device, thus
excluding any contact welding. In addition, a further non-fused auxiliary circuit is available.
The adjustable pre-alarm (MT) signals unfavourable combustion processes depending on flame
intensity, before a final switching off happens.
Indication is by LED MA. For external processing
an output 24 V / 100 mA is available.
(M)
(RM)
(RF)
MEASURING CHANNEL (M)
The analogue measuring channel is designed as
a attenuation filter with signal contractor followed
by a voltage-current transformer. The output of
the transformer supplies the internal analogue intensity indicator and through output terminals the
remote display instruments with 0 - 20 mA resp.
4 - 20 mA.
MONITORING CHANNEL (RM)
The monitoring channel contains all the periodical self-monitoring checks of the system required
for continuous operation. In case of malfunction
of the flame monitoring system 3000 the processor-based control logic reacts immediately and
the relay assigned to LED RM drops and interrupts burner operation within the safety switch off
time set for the monitoring channel (S4/S5).
Should the LED RM not be lit during burner start
operation or extinguish during operation the following malfunctions may exist:
a) Module defect in flame scanner 3001 for inst.
failure of clock signal.
b) Disturbing pulse effects on not correctly connected or installed flame detector lines (induced
voltage).
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connection diagram 3001
3001
back
panel
F101
+24V
M0.8A
G
a2
supply
24V DC +-20%/0,5Amax.
c2
01
a4
02
c4
03
a6
04
c6
05
a8
06
c8
07
a10
08
c10
09
a12
10
c12
11
a14
13
c14
14
a16
12
c16
15
a18
16
time. II "ON"
c18
17
measurement channel
c20
18
subsidiary circuit flame "OFF"
24V DC/1A max.
a22
19
subsidiary circuit flame "ON"
c22
20
subsidiary circuit lead
c26
21
a28
22
c30
23
safety circuit lead
safety circuit lead flame "OFF"'
must be included actively
in the start monitoring!
safety circuit lead flame "ON"
a32
24
ground lead
pulse
USig
connection of flame scanner
K1
+24V
V110
K1
supply
0V Masse (GND)
time. I 0V
time. II 24V DC/40mA max.
early warning "MA"
24V DC/100mA max.
switchover
3
X3
1 2
+15V
K2
X3
X4
K101
F102
M1A
G
K101
connection diagram flame scanner
BFI-special cable KW5
3001
back
panel
a4
a6
a8
2
4
6
a10
8
a12
10
a16
12
power supply 24V DC
green
4
4
pulse
brown
2
2
signal
white
1
1
signal ground
pink
3
3
power supply 0V ground
yellow
5
5
sensitivity switch-over (option)
grey
6
6
power supply 24V DC
green
4
4
pulse
brown
2
2
signal
white
1
1
signal ground
pink
3
3
power supply 0V ground
yellow
5
5
sensitivity switch-over (option)
grey
6
6
flamescanner
I
outer braided shield
BFI-special cable KW5
c4
c6
c8
3
5
7
c10
9
c12
11
c16
12
outer braided shield
4
flamescanner
II
ATTENTION:
The outer braided shield shall be clamped between the
plastic insert and the srewed coupler in the compression
gland on the scanner side.
The inner screening shall be cut on the scanner side and
connected to ground at the flame controller.
Technical data
The flame amplifier is self-monitoring for the fail-safe function control accordance to EN 230, EN 298.
Conform to the requirement of DIN VDE0116 and TRD 411 to 414, approved accordance to DIN
DVGW.
Two safety times
Two sensitivity ranges
Hysteresis:
Switching point flame „ON“
Switching point flame „OFF“
set in 1 - 6 steps (1 –6 seconds), longer times on request
set by digital switches, ratio 1:99
adjustable in 64 steps, 5 - 15 mA
< 5 mA
Flame relay:
2 changeover contacts, floating
(1 safety circuit, 1 subsidiary circuit)
Flame intensity display:
Current output 0-20 or 4-20 mA:
0-100 % (Built-in luminous bar indicator)
selection-jumper shunt resistance max. 300 Ω
Pre-alarm:
Pre-alarm output:
set by 10 steps / 2 mA
24 V, 100 mA, short circuit proof
Channel selection:
Quantization switchover:
Locked range switchover
or monitoring channel „off“
24 V, 40 mA
plug-in bridges
Status indication on LEDs:
channel I or channel II 'on' = green
evaluation channel (RF) and monitoring channel (RM) 'on' = yellow
Pre-alarm signal (MA) 'on' = yellow
Supply:
Current consumption:
Ambient temperature:
Protection:
Weight:
Part-no.:
24V DC, 500 mA
approximate 150 mA
-20°C to +70°C
IP 00
700 g
G 601
message 15 V/10 mA
The following applies to the safety circuit:
VDE 0110, class C 250 V
max. switching voltage:
250 V ohmic load
max. switching current:
1 A, ohmic load
max. switching power:
300 VA
All modules of the series 3000 are plug-in types for using in 19“-magazines accordance to
DIN 41494 (19“-norm).
The dimensions of all modules are:
Width
Height
Depth
Edition: Rev 2
70.78 mm = 14 DIV
128.70 mm = 3 DIV
188.00 mm
Right of technical modifications reserved
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© BFI Automation 2012