SGB LAE VLX A-Ex Series Operator's manual

Documentation
Leak indicating unit LAE
• for VLX .. A-Ex
• for DL .. ELC FCM
• for one or more leak detectors or leak detection probes
• for residual pressure monitoring of gas cylinders
Please read instructions before commencing any work
Last updated: 02/2020
Art. No.: 605 602

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Table of Contents
1.General........................................................................................3
1.1Information ..........................................................................3
1.2Explanation of Symbols ......................................................3
1.3Limitation of Liability............................................................3
1.4Copyright.............................................................................3
1.5Warranty Conditions ...........................................................4
1.6Customer Service ...............................................................4
2.Safety...........................................................................................5
2.1Intended Use.......................................................................5
2.2Obligation of the Operating Company.................................5
2.3Qualification ........................................................................5
2.4Personal protective equipment (PPE).................................6
2.5Fundamental Hazards.........................................................6
3.Technical Data of the Leak Indicating Unit ..............................7
3.1General Data.......................................................................7
3.2Electrical Data.....................................................................7
3.3Field of Application..............................................................7
4.Design and Function................................................................10
4.1Design...............................................................................10
4.2Displays and Controls .......................................................11
5.Mounting the System...............................................................12
5.1Basic Instructions..............................................................12
5.2Mounting the Leak indicating unit......................................12
5.3Electrical Cables ...............................................................12
5.4Electrical Wiring Diagram..................................................12
5.5Installation examples ........................................................20
6.Commissioning, Functional Check, and Maintenance .........24
6.1Commissioning of the leak indicating unit.........................24
6.2Functional Check and Maintenance..................................24
6.3Test routine/Alarm Test.....................................................25
7.Dimensions and Drilling Pattern.............................................25
8.EU Declaration of Conformity .................................................26
9.Manufacturer’s declaration of compliance ............................26
10.TÜV-Nord certification .............................................................27
Table of Contents

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1. General
1.1 Information
These instructions provide important information on how to use the
LAE leak indicating unit. The pre-requisite for workplace safety is the
adherence to all safety and handling instructions specified in this
manual.
Furthermore, any local regulations for prevention of accidents that are
applicable at the site of use of the leak indicating unit and general
safety instructions must be complied with.
1.2 Explanation of Symbols
In these instructions, warnings are marked with the adjacent symbol.
The signal word expresses the level of hazard.
DANGER:
Imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING:
Potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION:
Potentially hazardous situation which, if not avoided, could result in
minor or moderate injury.
Information:
Highlights useful tips, recommendations, and information.
1.3 Limitation of Liability
All information and instructions in this documentation have been
compiled considering the applicable standards and regulations, the
state of the art, and our longstanding experience.
SGB does not assume any liability in the case of:
Noncompliance with these instructions
Improper use
Use by unqualified personnel
Unauthorized modifications
Connection to systems not approved by SGB
1.4 Copyright
The contents, texts, drawings, images, and other representations are
copyrighted and subject to industrial property rights. Any misuse is
punishable.
General



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1.5 Warranty Conditions
We provide warranty for the LAE leak indicating unit for a period of 24
months from the day of installation on site in accordance with our
General Terms & Conditions.
The maximum warranty period is 27 months from the date of sale.
The obligation of warranty shall cease to exist in the case of
- inadequate or improper installation,
- improper use,
- modifications/repairs without consent of the manufacturer.
Our warranty does not include parts, which may be perished prema-
ture due to their consistence or category of usage (e.g. pumps,
valves, gaskets, etc.). Furthermore, we are not liable for defects or
corrosion damages caused by humid or inappropriate installation en-
vironments.
1.6 Customer Service
Our customer service is available for any inquiries.
For information on contacts, please refer to our website www.sgb.de
or the label of the leak indicating unit.
General

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2. Safety
2.1 Intended Use
Install leak indicating unit outside of the Ex area
Install inside a closed and dry room in buildings or alternatively in
an outdoor protective box
Do not install near strong heat sources
At least 1 m lateral distance from the tool (with VLX .. A-Ex)
Do not mount above or below the leak detector
Conditions from Chap. 3.3 “Field of Application” must be adhered
to.
The power supply cannot be disconnected
Any claims arising from misuse are excluded.
2.2 Obligation of the Operating Company
The leak indicating unit is used in the commercial sector. The operat-
ing company is therefore subject to statutory occupational safety obli-
gations.
In addition to the safety instructions in this documentation, all appli-
cable safety, accident prevention, and environmental regulations
must be adhered to. In particular:
- Compiling a risk assessment and implementing its results in a di-
rective
- Performing regular checks as to whether the directive is in compli-
ance with the current standards
- The directive includes, among others, how to react to an alarm that
might arise
- Arranging for an annual functional check
2.3 Qualification
The personnel must be capable of independently recognizing and
avoiding potential risks based on their qualifications.
Companies commissioning leak detectors or leak indicating units
should have completed respective training with SGB, through SGB, or
its authorized representative.
National guidelines must be adhered to.
For Germany: Technical service qualification for assembly, commis-
sioning, and maintenance of leak detection systems.
WARNING!
Danger from
misuse
WARNING!
Danger to hu-
mans and the
environment in
the case of in-
adequate quali-
fication
WARNING!
Danger in case
of incomplete
documentation
Safety

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2.4 Personal protective equipment (PPE)
Personal protective equipment must be worn during work.
- Wear necessary protective equipment for the relevant work
- Note and comply with existing PPE signs
Entry in the "Safety Book"
Wear HV vest
Wear safety footwear
Wear hard hat
Wear gloves – where necessary
Wear safety goggles – where necessary
2.5 Fundamental Hazards
DANGER:
from electric current
When working on an open leak indicating unit, it must be disconnect-
ed from the power supply.
Comply with relevant regulations regarding electric installation and
regulations for prevention of accidents.
DANGER:
from explosive vapor-air mixtures
Comply with explosion regulations, e.g., BetrSichV (and/or directive
1999/92/EC and the laws of the respective member states resulting
therefrom) and/or others.
Safety

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3. Technical Data of the Leak Indicating Unit
3.1 General Data
Dimension and drilling pattern see Chap. 7
Weight 0.5 kg
Storage temperature range -30°C to +70°C
Operating temperature range 0°C to +60°C
Buzzer volume >70 dB(A) in 1 m
Housing protection class IP 40
3.2 Electrical Data
Power supply 100…240 V AC, 50-60 Hz op-
tionally: 24 V DC
Power input 5.5 W
Terminals 5/6, external signal max. 24 V DC; max. 200 mA
Terminals 60(27)/61(28)/62,
63(23)/64(24)/65,
66(25)/67(26)/68,
Potential-free outputs max. 1.5 A for 220 V DC/250 V AC
3.3 Field of Application
3.3.1 General use
The leak indicating unit has three input channels.
Each channel has two terminals. When connected, a signal circuit is
closed between the terminals.
If the signal circuit of the respective channel is closed, the leak indi-
cating units is in good state. If the signal circuit is interrupted, the
alarm is triggered at the LAE.
Note:
Unused channels in the leak indicating unit must be bridged.
The connection devices with their potential-free relay contacts are
connected to the terminals of a channel. It is also possible to connect
several devices in series to one and the same channel.
If a connected device leaves its (good) operating state, its potential-
free contact opens and the signal circuit is interrupted. In this way,
both alarms and cable breaks are detected.
In the event of an alarm, the internal buzzer sounds on the leak indi-
cating unit and indicator lights on the keypad light up.
The following applies to the alarm display on the keypad:
Alarm on channel 1: Red LED (high priority)
Alarm on channel 2: Yellow LED (medium priority)
Alarm on channel 3 red + yellow LED (low priority)
Technical Data

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Note:
Due to the lower alarm priority for channel 3, it is recommended that
service equipment such as the dry filter monitoring be connected
here.
In addition, potential-free relay contacts are available on the leak indi-
cating unit itself for forwarding all three channels.
3.3.2 Use as an leak indicating unit for VLX .. A-Ex tools
VLX .. A-Ex type tools can be mounted within the Ex area and are
electrically connected to the leak indicating unit mounted outside the
Ex area.
A tool is connected to one leak indicating unit at a time. The leak indi-
cating unit is connected to the potential-free contacts of the tool via
the signal circuit, and the leak indicating unit additionally provides the
230 V AC power supply for the tool.
Note:
In general, it should be noted that VLX .. A-Ex tools are only connect-
ed to channel 1.
The other channels, 2 and 3, of the leak indicating unit remain un-
used.
For a connection diagram, the circuit diagram, and an installation ex-
ample, see Chap. 5.4 and 5.5.1.
3.3.3 Use as leak indicating unit for DL .. ELC FCM
At the leak detector DL .. ELC FCM, the alarm of the tank, the pipe-
line, and the service message are displayed when the dry filter is
used, which can also be transmitted potential-free by the leak detec-
tor.
The connection constellation to the leak indicating unit is:
Alarm of the tank potential-free on channel 1, alarm of the pipeline
potential-free on channel 2, and service message potential-free on
channel 3.
For a connection diagram, the circuit diagram, and an installation ex-
ample, see Chap. 5.4 and 5.5.2.
3.3.4 Use as central leak indicating unit for one or more leak detectors or leak detection probes
The leak indicating unit is used centrally for the connection of any
number of leak detectors and/or leak detection probes. For this pur-
pose, the potential-free contacts of the connected devices are con-
nected in series.
The connection is usually made on channel 1.
For a connection diagram, the circuit diagram, and an installation ex-
ample, see Chap. 5.4 and 5.5.3.
Technical Data

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3.3.5 Use as a leak indicating unit for residual pressure monitoring of pressurized gas cylinders
In the case of leak detectors that work with compressed gas such as
nitrogen, a residual pressure message can be useful in order to be
able to prepare a replacement of the cylinder in good time. For this
purpose, a contact manometer attached to the pressure reducer with
a set limit value triggers the alarm or the message on the leak indicat-
ing unit as soon as the residual pressure falls below the set limit val-
ue.
The connection is usually made on channel 1.
For a connection diagram, the circuit diagram, and an installation ex-
ample, see Chap. 5.4 and 5.5.4.
Technical Data

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4. Design and Function
4.1 Design
Interior view with:
31.1 Terminal strip mains, power supply 100-240 V AC
31.2 Terminal strip mains, power supply 24 V DC
31.3 Terminal strip signal circuit 1 to 3 and external signal
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
31.5 Protective conductor terminal
69 Buzzer
76 Main board
141 Terminal strip keypad
Design and Function
69
76
141
31.4
31.2
31.1
31.3
31.5

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4.2 Displays and Controls
4.2.1 Display
Note:
The light signals are displayed on the keypad as follows:
Individual alarm on channel 1: red LED lights up; if the audible
alarm is acknowledged, the red LED flashes.
Individual alarm on channel 2: yellow LED lights up; if the audible
alarm acknowledged, the yellow LED flashes.
Alarm on channel 1+2: red and yellow LEDs light up; if the audible
alarm is acknowledged, the red and yellow LEDs flash simultane-
ously.
Alarm on channel 3: red + yellow LEDs light up alternately, no dis-
tinction between pending alarm and acknowledgment.
4.2.2 Function "Turn off audible alarm signal"
Press the “mute" button briefly once, the audible signal switches off,
the respective LED (red for channel 1, yellow for channel 2, and flash-
ing red and yellow for channel 3) lights up.
This function is not available during normal operating conditions.
4.2.3 Alarm
In the event of an alarm, acknowledge the audible signal and check
which connected device triggered the alarm. In the event of alarms
from connected leak detection systems, inform the responsible ser-
vice company immediately. In the case of service notifications, have
the necessary measures carried out within the required time frame.
Indicator
lights
Operating condition Alarm channel 1 Alarm channel 2 Alarm channel 3 Audible alarm acknowledged
OPERA-
TION:
green ON ON ON ON ON
ALARM: red OFF ON OFF ON
(flashing) ON (flashing)
ALARM 2:
yellow OFF OFF ON ON
(flashing) ON (flashing)
Design and Function

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5. Mounting the System
5.1 Basic Instructions
- Prior to commencing work, the documentation must be read and
understood. In case of ambiguities, please refer to the manufac-
turer.
- The safety instructions in this documentation must be adhered to.
- Only qualified service companies may be used for assembly and
commissioning1.
- Leadthroughs for connection lines through which the explosion
atmosphere can carry over must be sealed gas-tight.
- Comply with relevant regulations regarding electric installation, ex-
plosion protection (e.g. EN 60 079-14, -17), and accident preven-
tion.
5.2 Mounting the Leak indicating unit
- Wall mounting usually with dowels and screws in a dry room
- NOT in potentially explosive areas.
- For housing dimensions and hole pattern, see Chap. 7.
5.3 Electrical Cables
Mains connection LAE and power supply for VLX .. A-Ex tool (5-wire):
- 1.5 mm2without ferrule or with ferrule without plastic collar
Potential-free relay contacts (6-wire):
- 1.5 mm2without ferrule or with ferrule without plastic collar
- 0.75 mm2with ferrule and plastic collar or with ferrule without plastic
collar
External signal (2-wire):
- 1.5 mm2without ferrule or with ferrule without plastic collar
- 0.75 mm2with ferrule and plastic collar or with ferrule without plastic
collar
Must be resistant to stored/pumped liquids.
5.4 Electrical Wiring Diagram
(1) Install the electrical connection securely, without plug or switch-
ing connections.
(2) Observe the requirements for electric installations, if necessary,
also those of the electric companies.
(3) Terminal layout: (see also block diagrams in Chap. 5.4.2 to 5.4.4)
1For Germany: Specialist service companies per Water Law that have documented qualifications to install
leak detection systems.
Assembly

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1/2 Power connection (100…240 V AC)
54/53 Power supply (230 V AC) for VLX .. A-Ex tool
40/41 24 V DC supply connection (+: 40, -: 41)
5/6 External signal 24 V DC (+: 5, -: 6)
11/12 Signal circuit for channel 1
51/52 Signal circuit for VLX .. A-Ex tool
21/22 Signal circuit for channel 2
31/32 Signal circuit for channel 2
Potential-free relay contacts:
60(27)/61(28) Channel 1 open in the case of alarm and power
failure
61/62 As above, but contacts closed
63(23)/64(24) Channel 2 open in the case of alarm and power
failure
64/65 As above, but contacts closed
66(27)/67(28) Channel 3 open in the case of alarm and power
failure
67/68 As above, but contacts closed
(4) Do not apply voltage until all electrical cables have been con-
nected and the housing cover has been closed.
Assembly

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5.4.1 Connecting the wires
(1) Press down the orange point with a screwdriver. This opens the
tension spring of the terminal.
(2) Insert cable into the open terminal.
(3) Hold cable and remove screwdriver.
(4) Check cable for a tight fit and install more cables to the terminals
using the same process.
Assembly

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5.4.2 LAE block diagram
01.1 Signal lamp Alarm I, red
01.2 Signal lamp Alarm II, yellow
09 Signal lamp "Operation", green
24.1 Fuse F1 (1 A), external signal
24.2 Fuse F2 (1 A), forwarding power supply 54
24.3 Fuse F3 (100 mA), fuse for switching power supply
31.1 Terminal strip mains, power supply 230 V AC
31.2 Terminal strip mains, power supply 24 V DC
31.3 Terminal strip signal circuit 1 to 3 and external signal
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
59 Relay (here for forwarding)
69 Buzzer
71 “Mute” button
116 24 V DC power supply unit
139 Keypad
140 Contact for serial data transfer
141 Terminal strip keypad
69
09
71
11 12 21 22 31 32 05 06 41 40
51 52
1L 1L 2N 2N
54 53
63 64 65
60 61 62 66 67 68
116
24.2
24.1
59
59
59
7
31.3
31.4
31.2
31.1
141
140
24.3
100 - 240 V AC
24 V DC
139
01.2
01.1
Assembly

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5.4.3 Block diagram/connection diagram – Connection as LAE for VLX .. A-Ex tools
01.1 Signal lamp Alarm I, red
01.2 Signal lamp Alarm II, yellow
09 Signal lamp "Operation", green
24.1 Fuse F1 (1 A), external signal
24.2 Fuse F2 (1 A), forwarding power supply 54
24.3 Fuse F3 (100 mA), fuse for switching power supply
31.1 Terminal strip mains, power supply 230 V AC
31.2 Terminal strip mains, power supply 24 V DC
31.3 Terminal strip signal circuit 1 to 3 and external signal
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
41 Alarm switch
42 Pump switch
59 Relay
60 Vacuum pump
69 Buzzer
71 ”Mute” button
86 Leak indicating unit
87 Leak detector
139 Keypad connection
N
L
51 52
53 54
11
60
60
7
62
62
61
61
1L1L2N2N
54 53
12
41
A
M
~
60
42
P
87654321
PE
PE
100 - 240 V AC
24 V DC
66/67/68
63/64/65
31/32
05/06
21/22
51/52 40/41
116
69
87
86
139
01.2
01.1
24.3 24.2
24.1
59
59
59
31.4
31.1
31.2
31.3
09
71
Assembly

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5.4.4 Block diagram/connection diagram – Connection as LAE for DL .. ELC FCM
01.1 Signal lamp Alarm I, red 59 Relay
01.2 Signal lamp Alarm II, yellow 69 Buzzer
09 Signal lamp "Operation", green 71 “Mute” button
24.1 Fuse F1 (1 A), external signal 87 Leak detector DL .. ELC FCM
24.2 Fuse F2 (1 A), forwarding power supply 54 87.1 Pipeline leak detector
24.3 Fuse F3 (100 mA), fuse for switching power supply 116 24 V DC power supply
31.1 Terminal strip mains, power supply 230 V AC 139 Keypad
31.2 Terminal strip mains, power supply 24 V DC 140 Contact for serial data transmission
31.3 Terminal strip signal circuit 1 to 3 and external signal 141 Terminal strip keypad
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
81079654321
L
N
69
87
116
87.1
24.2
24.1
59
59
59
31.2
31.1
31.3
31.4
01.2
01.1
140 141
24.3
139
100 - 240 V AC
24 V DC
7
09
71
L N PE 11 12 11 12 L N
21 22 31 32
11/12 21/22 31/32
PE
Assembly

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5.4.5 Block diagram/terminal diagram – Connection of any potential-free contacts
(channels 1 to 3), power supply of the LAE with 24 V DC
01.1 Signal lamp Alarm I, red 59 Relay (here for forwarding)
01.2 Signal lamp Alarm II, yellow 69 Buzzer
09 Signal lamp "Operation", green 71 “Mute” button
24.1 Fuse F1 (1 A), external signal 116 24 V DC power supply unit
24.2 Fuse F2 (1 A), forwarding power supply 54 140 Contact for serial data transfer
24.3 Fuse F3 (100 mA), fuse for switching power supply 141 Terminal strip keypad
31.1 Terminal strip mains, power supply 230 V AC
31.2 Terminal strip mains, power supply 24 V DC
31.3 Terminal strip signal circuit 1 to 3 and external signal
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
87654321
24 V DC +
GND
69
116
24.2
24.1
59
59
59
31.2
31.1
31.3
31.3
01.2
01.1
140
141
140
24.3
139
11
7
12
A1
21 22
A2
31 32
A3
100 - 240 V AC
24 V DC
09
71
Assembly

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5.4.6 Block diagram/terminal diagram - Connection of any potential-free contacts
(channels 1 to 3), voltage supply of the LAE with 230 V AC
01.1 Signal lamp Alarm I, red 59 Relay (here for forwarding)
01.2 Signal lamp Alarm II, yellow 69 Buzzer
09 Signal lamp “Operation”, green 71 “Mute” button
24.1 Fuse F1 (1 A), external signal 116 24 V DC power supply unit
24.2 Fuse F2 (1 A), forwarding power supply 54 140 Serial data transmission port
24.3 Fuse F3 (100 mA), fuse for switching power supply 141 Keypad connection
31.1 Terminal strip mains, power supply 230 V AC
31.2 Terminal strip mains, power supply 24 V DC
31.3 Terminal strip signal circuit 1 to 3 and external signal
31.4 Terminal strip potential-free contacts for signal circuit 1 to 3
87654321
230 V AC
N
69
116
24.2
24.1
59
59
59
31.2
31.1
31.3
31.3
140
141
140
24.3
139
11
7
12
A1
21 22
A2
31 32
A3
100 - 240 V AC
24 V DC
09
01.2
71
01.1
PE
Assembly

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5.5 Installation examples
5.5.1 As a leak indicating unit for VLX .. A-Ex tools
01.1 Signal lamp Alarm I, red
01.2 Signal lamp Alarm II, yellow
09 Signal lamp "Operation", green
69 Buzzer
71 “Mute” button
86 Leak indicating unit
87 Tool (here "Ex" version)
87
Ex
230 V AC / 50 Hz
86
69
09
71
Ex
Ex
/
pot.frei (51/52)
51/52 54/53
VLX ../A-Ex
230 V AC (53/54)
01.2
01.1
Assembly