OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
Main features
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Omni Directional high output sounder 110dB max @ 1 mtr
nd
2 stage alarm, independently selectable 2 stage
All units share a common explosion proof housing
Meets UL, CSA, GOST, ATEX and IECEx Approvals
ATEX / IECEx Approved for Gas & Dust Zone 1 & 2, 21 & 22.
Dual cable entry, cable in - cable out: c/w ATEX certified plugand dustcover as standard on ATEX models; UL
models supplied with 2 x 1/2 inch NPT adaptors.
Aluminium enclosure with stainless steel fasteners.
Lens guard provided as standard
Flash rate 1 per second.
Weather proof flame retardant ABS horn
7 Lens colours in flame retardant polycarbonate, Clear (C), Opal (O), Yellow (Y), Red (R), Amber (A), Blue (B),
Green (G).
Telephone Initiate option available - contact Sales Office
32 selectable tones meeting international regulations
Sound selection via DIL switches.
Temperature class T4 Standard, Class T6 Optional
R. STAHL Schaltgeräte GmbH
Kompetenzcenter Licht
Nordstraße 10, D-99427 Weimar
Telefon: +49 3643 4324
Telefax: +49 3643 422176
E-Mail: info.leuchten@stahl.de
www.stahl-ex.com
The production is carried out in a manufacturing facility which is
listed in a communication about the recognition of quality insurance or in the Quality Assessment Report.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
Technical Specifiation
IP66 NEMA 4X
Sounder/Strobe
Sounder
Strobe
•
Sounder
Strobe
Sounder/Strobe
Sounder
Strobe
24Vdc
24Vdc
24Vdc
24Vdc
24Vdc
48Vdc
48Vdc
48Vdc
115Vac
115Vac
115Vac
115Vac
115Vac
230Vac
230Vac
230Vac
230Vac
(YL6)
(YO6)
(V6) 5 J
(V6) 10J
(V6) 20J
(V6) 5J
(V6)10J
(V6) 20J
(YO6)
(V6) 5 J
(V6) 10J
(V6) 20J
(YL6) 5J
(YO6)
(V6) 5J
(V6) 10J
(V6) 20J
(UL, ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(UL, ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
(ATEX, GOST, IECEx)
570mA
350mA
220mA
500mA
1.1A
135mA
300mA
560mA
110mA
90mA
105mA
260mA
200mA
55mA
45mA
53mA
170mA
Operating temperatures
Gas Group IIB
T4(-35 ºC to +60ºC) T6(-35 ºC to +40ºC)
Gas Group IIB+H2
T4(-20 ºC to +60ºC) T6(-20 ºC to +40ºC)
(For European [T6]Class refer to Sales Office)
(-35 ºC to +40ºC)
(-25 ºC to +40ºC)
Approval specification
Underwriters Laboratories UL Standards
UL 464, UL 1203, UL 1638
Control No.8N30 (Sounder YO6 and Combined Unit YL6)
Control No.13JM (Strobe V6 only)
UL Classifications
Class I Division 1, Gas Group BCD
Class II Division 1, Gas Group EFG (Strobe V6 only)
CUL Canada
CSA C22.2 No.25-M1966, CSA C22.2 No. 30-M1986
European Standards
EN60079-0:2004 (EN50014:1997+ Amendments 1 and 2)
EN60079-1:2004 (EN50018:2000) EN50281-1-1:1998.
ATEX Directive 94/9/EC
Baseefa02ATEX0212X
II2 GD Ex d IIB T4 (or T6 see above)
Baseefa02ATEX0222X
II2 GD Ex d IIB+H2T4 (or T6 see above)
Russian Approval
GOST-R
International Certification
IECEx
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE CARRYING OUT ANY WORK ON THE
ALARM.
Do not discard any packing material until installation is complete.
THESE ALARMS SHOULD ONLY BE INSTALLED BY COMPETENT PERSONNEL
These alarms are certified in accordance with the ATEX Directive 94/9/EC. The certificate numbers and their
associated marking are as follows:
Baseefa02ATEX0212X
CE0158
II 2 GD - Ex d IIB T 135C (Tamb –35 C to +60 C)
II 2 GD - Ex d IIB T 85C (Tamb –35 C to +40 C)
Baseefa02ATEX0222X
CE0158
II 2 GD - Ex d IIB+H2 T 135C (Tamb –20 C to +60 C)
II 2 GD - Ex d IIB+H2 T 85C (Tamb –20 C to +40 C)
These alarms are certified in accordance with the IEC60079-0:2004 Edition 4 and IEC60079-1:2003 Edition 5.
The certificate numbers and their associated marking are as follows:
IECEx BAS05.0086X
Ex d IIB T4 (Tamb –35 C to +60 C)
Ex d IIB T6 (Tamb –35 C to +40 C)
IECEx BAS05.0087X
Ex d IIB+H2 T4 (Tamb –20 C to +60 C)
Ex d IIB+H2 T6 (Tamb –20 C to +40 C)
No alteration to the unit is allowed. In case the unit becomes faulty, It must be returned to the factory.
‘This equipment is designed and manufactured to protect against other hazards as defined in paragraph 1.2.7
of Annex II of the ATEX Directive 94/9/EC.’
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
INSTALLATION AND OPERATING INSTRUCTIONS
These instructions apply to the following Alarm models:
Flameproof audible range, sounder type YO6
Flameproof visual range, strobe type V6 5J
10J
20J
Combined audible & visual range, type YL6
YA60BD, YA60BF, YA60BL, YA60BN
YA60CD, YA60CF, YA60CL, YA60CN
FL60BD50, FL60BF50, FL60BL50, FL60BN50
FL60CD50, FL60CF50, FL60CL50, FL60CN50
FL60BD100, FL60BF100, FL60BL100, FL60BN100
FL60CD100, FL60CF100, FL60CL100, FL60CN100
FL60BD200, FL60BF200, FL60BL200, FL60BN200
FL60CD200, FL60CF200, FL60CL200, FL60CN200
YL60BD50, YL60BF50, YL60BL50, YL60BN50
YL60CD50, YL60CF50, YL60CL50, YL60CN50
These products are a range of audible and visual alarms approved for use in potentially explosive atmospheres, and
have been ATEX and IECEx certified by Baseefa Ltd using EN60079-0 and EN60079-1:2004 standards.
Models are available for use in hazardous areas with the following classifications: Group IIB and IIB+H2.
An alarm approved for use in a particular gas group may be used in areas where the gas group is of a lower hazard.
i.e.
IIB+H2 equipment is suitable for Gas groups IIB and IIA, also
IIB equipment is suitable for Gas group IIA also.
The alarms are suitable for outdoor use.
ALL INSTALLERS MUST PROVIDE SUPPLY LINE FUSES
The Yodalex alarms meet the requirements of standards BS EN60529:1992, Degree of protection IP66
General
The alarms must be installed in accordance with these instructions.
The alarms must also be installed in accordance with local codes and/or special requirements of any authority having
jurisdiction.
Models for connection to DC supplies have a DC lines status monitoring facility.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
PREPARATION
ENSURE THE SUPPLY IS OFF BEFORE COMMENCING INSTALLATION.
A.
Check that you have the correct alarm to satisfy the system specification.
Gas group and temperature?
Audible or Visual alarm or both?
Supply voltage?
Sound signal selected ?
Strobe lens colour correct ?
Suitable mounting location ?
Cable connection and installation method ?
B.
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Location
Select a suitable location for the alarm with regard to the area to be covered by the
sound or flash signal.
The surface should be flat in the area of the fixings and the material suitable to carry the weight of the alarm.
For a sounder, the sound signal pattern is omni-directional and the sounder should be mounted with the Horn at the
top.
 For a strobe, the alarm should be mounted with the lens at the bottom and out of direct sunlight.
 In exceptional circumstances, the alarms can be mounted horizontally or for the strobe, with the lens uppermost.
Do not mount the sounder with the Horn downwards.
 The cable must be connected to the alarm via a sealed component and this must be located adjacent to the cable
entries in the alarm body.
 Suitable sealing devices are a sealed threaded nipple or a sealed gland; the choice of device depends upon the gas
group applicable to the installation and on the chosen installation method.
 There are two entries to the alarm body and one or both may be used depending upon the number of cable cores
required by the system arrangement.
 It is preferable that the cable and its seal be fitted at the factory or approved workshop; however the method for
assembling the cable and sealed components is described below.
IMPORTANT
THE ALARM IS A PRECISION INSTRUMENT. TAKE EXTREME CARE WHEN HANDLING.
 Particular care is needed when removing or replacing components which form part of the flameproof enclosure.
 Exposed joint surfaces must be protected and not have contact with dust or dirt, or be knocked against any object.
 The end flanges must be fitted squarely and on no account is force to be used. The flange must not be hammered,
levered with a metal instrument or the fixing screws used to pull down the flange.
 With care and patience, it will be found that the flange enters the body without difficulty.
I. Combined Sounder/Strobe
It is recommended that the unit be stood upright in a cup-shaped base holding the strobe section.
Remove the Horn from the sounder flange by unscrewing the three self-tapping screws (pozi drive head) in the dome
of the Horn.
Unscrew the four socket headed screws, two washers and 'O' ring in the flange. (Socket head wrench 4mm (5/32")
across flats). These screws will not be fully tightened if the alarm is not a factory-sealed unit.
IMPORTANT: TAKE EXTREME CARE WHEN REMOVING THE SOUNDER FLANGE FROM THE MAIN BODY.
DO NOT USE THE TRUMPET AS A LEVER.
 Unplug the pressure unit cable from the PCB assembly.
 The exposed joints must be kept clean of dirt and not damaged in handling.
 Lay down the sounder flange assembly to one side on a clean piece of the packing material.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
CABLE CONNECTION (ATEX ONLY)
 Cable entry hole(s) to accommodate any suitable ATEX certified flameproof cable entry device for gas group IIB or
IIC with or without the interposition of a suitable ATEX certified flameproof thread adaptor and for which the cable is
appropriate and suitable for the conditions of use.
Cable entry temperature may reach 70C.
Cable entry devices must be ATEX certified suitable for either IIB for IIB gas group or IIC for IIB+H2 gas group. Any
unused entry hole is to be closed using a suitable ATEX certified flameproof stopping plug for gas group IIB or IIC
with or without the interposition of a suitable certified flameproof adaptor for gas group IIC (one Baseefa ATEX certified stopping plug is fitted by manufacturer as standard).
Suitable ATEX flameproof cable entry devices, thread adaptors and stopping plugs certified as Equipment (not a
Component) under an EC-Type Examination Certificate to Directive 94/9/EC may also be used in the manner indicated above.
The terminals accept wires of 2.5 mm².
The PCB assembly may be lifted in its slide channels to give easier access to the terminals.
CABLE CONNECTION (IECEx)
 Cable entry hole(s) to accommodate any suitable certified flameproof cable entry device for gas group IIB or IIC with
or without the interposition of a suitable certified flameproof thread adaptor and for which the cable is appropriate
and suitable for the conditions of use.
Cable entry temperature may reach 70C.
Cable entry devices must be certified suitable for either IIB for IIB gas group or IIC for IIB+H2 gas group. Any unused entry hole is to be closed using a suitable certified flameproof stopping plug for gas group IIB or IIC with or
without the interposition of a suitable certified flameproof adaptor for gas group IIC (one certified stopping plug is fitted by manufacturer as standard).
The terminals accept wires of 2.5 mm².
The PCB assembly may be lifted in its slide channels to give easier access to the terminals.
SOUND SIGNAL SELECTION
 It is preferable if the sound signal selection is set at the factory or at an approved workshop.
 To make the sound signal selection, refer to the table of sound signals and the switch positions for the chosen
sounds (Page 8).
 Double check you have selected the correct switch positions for your chosen stage 1 alarm signal and for your chosen stage 2 alarm signal.
 Check again before re-assembly of the alarm.
RE-ASSEMBLY OF THE ALARM
 Reconnect the pressure unit cable connection; make sure this is secure.
 Make sure the PCB assembly is correctly located in the slides in the body. Check that the flash tube is clearly visible and centrally located in the glass dome.
 Re-assemble the sounder flange to the main body but take care that the pressure unit wire is not trapped in the
joint, across the edge of the PCB assembly or between the head of the earth screw and the pressure unit.
 Check that the 'O' ring is properly fitted in the groove in the body.
 Take care when fitting the flange. This must be inserted squarely into the main body. Force must not be used, with
patience it will be found that the flange enters without difficulty.
 The screws must not be used to pull down the flange to the body.
 Each socket screw should be fitted with a lock washer, flat washer and an 'O' ring. The 'O' ring must locate in the
groove at the base of the counter bore. Screw down the socket screws tightly.
Note:
 If the alarm has been in service and/or the socket headed screws in the flange have been previously tightened, it is
advisable to replace the o-rings (Part No. GR0192) before retightening the screws.
 Refit the Horn to the Trumpet using the three self-tapping screws.
II. Sounder only
 The alarm may be stood on a clean surface on the flat base.
 The procedure should be followed as described for the Sounder/Strobe alarm above.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
III. Strobe only
 The alarm should be stood upright in a cup-shaped base, which holds the strobe lens steady.
 Remove the fixing screws, washers and o-rings in the base plate.
 Connect the cable via the entries in the enclosure to the PCB assembly using the method described for the sounder/strobe alarm.
 Ensure that the 'O' ring is properly fitted in the groove of the body.
 Refit the base plate carefully, ensure the flange is squarely located in the enclosure and there is a minimum gap
between flange and body.
 Ensure each socket screw is fitted with a lock washer, flat washer and 'O' ring.
 Screw down socket screws tightly.
Lens Colour Change
 If it is required to change the lens colour of the strobe, it is necessary to purchase the required colour’s strobe
flange assembly from your supplier.
INSTALLATION
 Ensure that the mounting surface at the installed location is flat and suitable for carrying the weight of the alarm.
 Remove the bracket, fixing screws and washers from the bag in the carton. Assemble the bracket to the alarm body
enclosure using two off hexagon head set screws(M6 X 16mm long), lock washers and flat washers.
 Check that the bracket is tightly secured to the alarm enclosure. The fixings for the alarm to the mounting surface
are two holes (8.5mm (0.33in) on 75mm. (2.95in) centres.
 Suitable bolts (not supplied) for securing should be used.
INTERCONNECTION OF ALARMS
Alarms may be connected in parallel, that is, up to ten alarms with common supplies may be connected as a single
system loop. Both sets of terminals should be used to provide an 'in' and 'out' connection.
SYSTEM OPTIONS
Operating supply voltage
Sound signal selections
Alarm stages
Strobe
Lens colours
Cable cores
24Vdc, 48Vdc, 115Vac or 230Vac
32 (see table)
Single or Two from all sounders
Separate LIVE terminals for independent supply
Note: NEUTRAL is common
Live terminals labelled L1 and L2 should be linked
together with a suitable wire link on the mains PCB
Clear; opal; red; amber; blue; green; yellow
The number fitted depends upon the system requirements
EARTHING
 The alarm must be connected to a good quality earth.
 EARTHING points are provided both inside and outside the alarm enclosure. These EARTHING points are identified with the Ground Symbol.
 The internal earth connection must be used. The external terminal is for a supplementary bonding connection and
is used where local code or authorities permit or require such connection.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
MISCELLANEOUS DATA
Combined
Sounder
Strobe
{dc}
5.0
4.4
4.1
{ac}
5.6
4.7
4.4
All metal castings are of LM6 aluminium alloy, corrosion resistant, anodised and outside surfaces finished with a
polyester paint coating.
The strobe dome is of clear borosilicate glass.
The sound-shaping components are of flame retardant ABS.
The coloured lens is of flame retardant polycarbonate.
All external fasteners are of stainless steel.
All sounders have 32 sound signal selections. From the 32 sound signals, any signal may be chosen as the first
stage alarm and any signal for the second stage alarm.
Sound output level and current consumption depends upon the signal selected. Typical sound output level at 1 metre is 110dB(A) and typical current consumption is 350 mA for 24VDC, 110 mA for 115 VAC and 55 mA for 230 VAC
depending upon sound signal selected. These values apply for Gas Group IIB; for Gas Group IIB+H2, sound output
is reduced by typically 3dB.
All strobes have a xenon flash rate of 1Hz, one flash per second. The flash energy is 5 joules with a typical current
consumption of 220 mA for 24VDC, 135mA for 48VDC, 90 mA for 115 VAC and 45 mA for 230 VAC.
 Weight (kg).
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5 JOULES
10 JOULES
20 JOULES
24VDC
220mA
500Ma
1.1A
48VDC
130mA
300mA
500mA
115VAC
90mA
105mA
260mA
230VAC
45mA
53mA
170mA
WARNING: POSSIBLE ELECTROSTATIC RISK
The Horn and Lens may become electro-statically charged and should not be touched or rubbed when in operational
service. If cleaning is required follow the warning given on the equipment label and clean only with a suitable damp
cloth.
THREADED CABLE ENTRIES
All threaded cable entries to be fitted with an ATEX certified component and the thread sealed with a suitable nonsetting thread sealant to maintain IP66 rating.
SPECIAL CONDITIONS FOR SAFE USE (BASEEFA CERTIFIED)
 The equipment incorporates flameproof joints which have a maximum gap less than that stated in the standard
EN50018:2000 to which it is certified.
(Note: EN60079-1 replaces EN50018)
The user must ensure that the diametric clearance associated with the spigot joint at each end cover does not exceed 0.064mm and the gap between the face of each end cover and the body does not exceeed 0.038mm.
 For replacement purposes the end cover fixing screws shall be of minimum grade A4-80 stainless steel.
 The cable entry device shall be suitably sealed to maintain IP66 rating.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
SOUND SIGNALS
sound
Signal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Freq.
Alternate two-tone
Alternate two-tone
Alternate fast two-tone
Alternate fast two-tone
Alternate two-tone
Alternate two-tone
Alternate v.fast two-tone
Alternate v.fast two-tone
Alternate two-tone
Continuous note
Continuous note
Continuous note
Continuous note
Continuous note
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Interrupted tone
Int,fast,rising volume
Fast siren
Rising constant,fall
ISO 8201 Evacuation
Fast whoop
Slow whoop
Reverse sweep
Siren
800-1000
2500-3100
800-1000
2500-3100
440-554
430-470
800-1000
2500-3200
440-554
700
1000
1000
2300
440
1000
420
1000
2500
2500
700
1000
700
700
720
1400
250-1200
1000
800-1000
500-1000
500-1200
1200-500
500-1200
rept.
rate
sound switches
12345
SW1, SW2
special applications
0.5
11111
Fire Alarms
0.5
01111
Security Alarms
0.25
10111
Increased Urgency
0.25
00111
Security Deterrent
0.4/0.1 1 1 0 1 1
Evacuation Alarm, FRANCE
1.0
01011
0.13
10011
0.07
00011
2.0
11101
Turn-out, SWEDEN
01101
All Clear, SWEDEN
10101
00101
11001
01001
2.0
10001
1.25
00001
0.5
11110
0.25
01110
0.5
10110
6/12
00110
Pre-vital Message, SWEDEN
1.0
11010
4.0
01010
Air-raid Alarm, SWEDEN
0.25
10010
Local Warning, SWEDEN
0.7/0.3 0 0 0 1 0
Industrial Alarm, GERMANY
0.25
11100
0.085
01100
10/40/10 1 0 1 0 0
Industrial Alarm, GERMANY
as std
00100
International Evacuation Alarm
0.15
11000
4.5
01000
Evacuation Alarm, Netherlands
1
10000
Evacuation Alarm, GERMANY
3.0
00000
switch settings: ON=1 and OFF=0
The PFEER sound signals recommended by UKOOA are:General Alarm
Sound Signal 15
Interrupted tone 1000 Hz
PAPA
Sound Signal 31
Reverse Sweep 1200-500 Hz
Toxic Gas
Sound Signal 11
Continuous Tone 1000 Hz.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
AC ALARM CONNECTION AND SOUND SIGNAL SELECTION
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
ALARM CONNECTION FOR TELEPHONE INITIATE
Connection is as per the diagram above. The supply is on all the time with the Sounder and/or Flasher only working
when a ring tone is detected on the telephone input.
Note: The Sounder will follow the ring tone whilst the the Flasher will remain flashing only switching Off 4 seconds after
the Telephone has been answered.
Not suitable for UL applications.
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
AC ALARM CONNECTION FOR 10/20J BEACONS
DC ALARM CONNECTION FOR 10/20J BEACONS
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
DC ALARM CONNECTION AND SOUND SIGNAL SELECTION
Line monitoring by supply reversal
Single Stage Alarm, Sounder and Strobe
operate together
Sounder
+24v dc
Strobe
0v
Earth
3
2
TB1
1
x
4
LK1 (link 0v)
1
4
3
2
TB2
1
LK2 (link 24v dc)
3
Earth
Connection
4
Pressure Unit Connector
(On other side of PCB)
TB3
2
resistor (E.O.L)
Sound Selection
(On other side of PCB)
l
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OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
Strobe
0v +24vdc
Line monitoring by supply reversal
Single Stage Alarm, Sounder and Strobe
operate separately
Sounder
0v +24vdc
Earth
3
2
TB1
1
x
resistor (E.O.L)
4
LK1 removed
(link 0v)
1
4
3
2
TB2
1
LK2 removed
(link +24v dc)
3
Earth
Connection
4
Pressure Unit Connector
(On other side of PCB)
TB3
2
resistor (E.O.L)
Sound Selection
(On other side of PCB)
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ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
A. Two stage alarm by third core
Strobe shown with common 0v,
with sounder
Line monitoring by supply reversal
Select alarm stage 1 on SW1
Select alarm stage 2 on SW2
Strobe
+24v dc
0v
Sounder
& Strobe
Sounder
+24v dc
Earth
2
TB1
1
x
3
y
4
LK1 (link 0v)
LK2 removed (link 24v dc)
3
Earth
Connection
4
Pressure Unit Connector
(On other side of PCB)
TB3
2
1
4
3
2
TB2
1
to next strobe
Sound Selection
(On other side of PCB)
To Next Sounder
NOTE: That the two stage control always operates as follows:The first stage sounds by supplying volts to a unit via control switch ‘x’,
This switch remains on and the second stage signal is controlled by switching volts to the third terminal via
switch ‘y’.
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ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
DC ALARM CONNECTION AND SOUND SIGNAL SELECTION
B. Two stage alarm by Supply reversal
Line monitoring by threshold method <1V)
Select alarm stage 1 on SW1
Select alarm stage 2 on SW2
Strobe operated from separate supply.
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ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
DC ALARM CONNECTION AND SOUND SIGNAL SELECTION
C. Two stage alarm by third core
st
nd
Strobe flashes for both 1 and 2
stages of sound alarm.
Line monitoring by supply reversal
Select alarm stage 1 on SW1
Select alarm stage 2 on SW2
Common supply to Sounder and
Strobe
NOTE: That the two stage control always operates as follows:The first stage sounds by supplying volts to a unit via control switch ‘x’, This switch remains on and the second
stage signal is controlled by switching volts to the third terminal via switch ‘y’.
18
ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
DC ALARM CONNECTION AND SOUND SIGNAL SELECTION
D. Two stage alarm by Third core
nd
Strobe flashes for 2 stage of
sound alarm, link TB2/3 to TB1/2
Line monitoring by supply reversal
Select alarm stage 1 on SW1
Select alarm stage 2 on SW2
Common supply to Sounder and
Strobe.
19
ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
DC ALARM CONNECTION AND SOUND SIGNAL SELECTION
E. Single stage alarm
Line monitoring by supply reversal
Select alarm stage 1 on SW1
Strobe shown with common 0v,
with Sounder
NOTE: That the two stage control always operates as follows:The first stage sounds by supplying volts to a unit via control switch ‘x’, This switch remains on and the second
stage signal is controlled by switching volts to the third terminal via switch ‘y’.
20
ID: 205571/D72922/R. STAHL/2011-06-07/en-15
OPERATING AND INSTALLATION INSTRUCTIONS FOR ATEX AND IECEX YODALEX FLAMEPROOF AUDIBLE AND VISUAL ALARMS
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ID: 205571/D72922/R. STAHL/2011-06-07/en-15