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Eaton Layout 1 Technical Manual
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Eaton DB1 is a device designed for use in harsh and potentially explosive environments, such as offshore or onshore industrial settings. It is made of marine grade alloy or stainless steel and is resistant to corrosion and impacts. The device is suitable for hazardous location fire alarm applications and provides a pre-determined audible warning sound when required. It can operate on both AC and DC power sources, which makes it versatile and adaptable to different electrical systems.
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Technical Manual for the
Horn - DB1PUL
DB1HP UL
Please note that every care has been taken to ensure the accuracy of our technical manual. We do not, however, accept responsibility for damage, loss or expense resulting from any error or omission. We reserve the right to make alterations in line with technical advances and industry standards.
© Eaton MEDC Ltd 2017 07/17
1.
INTRODUCTION
These horn units have been designed for use in harsh environmental conditions.
2. INSTALLATION
General
When installing and operating explosion-protected electrical equipment, requirements for selection, installation and operation should be referred to eg. IEC
60079-14 worldwide and the ‘National Electrical Code’ in North America.
Additional national and/or local requirements may apply.
Ensure that all nuts, bolts and fixings are secure.
Ensure that only the correct UL listed stopping plugs are used to blank off unused gland entry points and that the NEMA/IP rating of the unit is maintained.
The unit is mounted via 2 x Ø 0.31” (8 mm) fixing holes in the base. The fixing holes have been designed to accept an M6 screw or bolt. MEDC recommend the use of stainless steel screws.
Cable Termination
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Unscrew and remove the 4 off screws holding the cover assembly to the base.
Keep in a safe, accessible location.
Twist the cover gently clockwise and anti-clockwise, whilst pulling it away from the unit. Remove to gain access to the interior of the base.
Cable termination should be in accordance with specifications applying to the application. MEDC recommend that all cables and cores should be fully identified.
Ensure that only correct UL Listed cable glands are used and that the assembly is shrouded and correctly earthed.
All cable glands should be of an equivalent NEMA/IP rating to that of the unit and integrated with the unit such that this rating is maintained.
The internal earth terminal (where fitted), must be used for the equipment grounding connection and the external terminal is for a supplementary bonding connection where local codes or authorities permit or require such a connection.
Once termination is complete, carefully push the cover back onto the unit, avoiding damage to the mating surfaces. Replace & tighten the 4 off cover screws evenly, to ensure maintenance of the required gap between the cover and enclosure.
07/17 © Eaton MEDC Ltd 2017
GENERAL ARRANGEMENT
2 - HOLES 5 /
16
" / 8mm
5 1 /
2
" / 140mm FIXING CRS
3 1 /
8
" / 79mm
6 7 /
8
" / 175mm DIA
6 3 /
4
" / 171mm DIA
ALL DIMENSIONS IN INCHES AND MILLIMETERS
© Eaton MEDC Ltd 2017 07/17
TONE FREQ/DESCRIPTION
1 Alt Tones 800/970 Hz at 1/4 sec
2 Sweeping 800/970 Hz at 7Hz
3 Sweeping 800/970 Hz at 1 Hz
5 Sweeping 2400-2850 Hz at 7 Hz
6 Sweeping 2400-2850 Hz at 1 Hz
7 Slow Whoop
8 Sweep 1200-500 Hz at 1 Hz
9 Alt Tones 2400/2850 Hz at 2 Hz
10 Int Tone of 970 Hz at 1 Hz
11 Alt Tones 800/970 Hz at 7/8 Hz
12 Int Tone at 2850 Hz at 1Hz
13 970Hz at 1/4 sec on 1 sec off
15 554Hz for 100mS / 440 Hz for 400mS
16 Int 660 Hz 150 mS on 150 mS off
17 Int 660 Hz 1.8 sec on 1.8 sec off
18 Int 660 Hz 6.5 sec on 13 sec off
20 Alt 554/440 Hz at 1 Hz
21 Int 660 Hz at 7/8 Hz
22 Int 2850 Hz 150 mS on 100 mS off
23 Sweep 800-970 Hz at 50 Hz
24 Sweep 2400-2850 Hz at 50 Hz
25 3 970Hz pulses 0.5on/0.5off, 1.5 off
26 3 2850Hz pulses 0.5on/0.5off, 1.5 off
27 Int 3100 Hz 0.32s on / 0.68s off
28 Spare/Customer Tone
29 Spare/Customer Tone
30 Spare/Customer Tone
31 Spare/Customer Tone
32 Spare/Customer Tone
SWITCH
SETTING
12345
11111
11110
11101
11100
11011
11010
11001
11000
10111
10110
10101
10100
10011
10010
10001
10000
01111
01110
01101
01100
01011
01010
01001
01000
00111
00110
00101
00100
00011
00010
00001
00000
TONE
DESCRIPTION
Fast Sweep(LF)
Med Sweep(LF)
Fast Sweep
Slow Whoop
Din Tone
Back-Up Alarm(LF)
Back Up Alarm(HF)
French Fire Sound
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Swedish Fire Alarm
Pelican Crossing
Low Freq Buzz
High Freq Buzz
* DB1P Tone 4 is acceptable for Public mode use. DB1P Tones 14 & 19 are acceptable for
Private mode use. DB1HP Tones 4 & 14 are acceptable for Public mode use.
DB1HP Tone 19 is acceptable for Private mode use
07/17 © Eaton MEDC Ltd 2017
3. OPERATION
3.1 The unit is initiated directly from the power source.
The DB1P & DB1HP units include two 5-way DIL switches to select any two tones from the list. Use SW2 to select tone 1 & SW1 to select tone 2.
3.2 Single Stage Alarm (d.c. version only)
To operate as a single stage alarm, set the appropriate tone using SW1 and connect input wires to TB1 (+ve) (red) and TB5 (–ve) (blue). Loop in and loop out is then TB2 and TB6.
To operate in supervisory mode, reverse the voltage between TB1 and TB5
(such that TB1 is -ve and TB5 +ve).
Note that there is a diode mounted on the PCB which will inhibit the operation of the sounder in the supervisory (reverse voltage) mode.
3.3 Two Stage alarm (d.c. version only)
To operate as a two stage alarm, set the required tones using SW2 for tone 1 and SW1 for tone 2.
3.3.1 Reverse Polarity Set Up
Connect input wires to TB1 (+ve) (red) and TB3 (–ve) (black), tone 1 will sound. Reverse the voltage so that TB3 is +ve and TB1 is –ve, tone
2 will sound.
3.3.2 Common +ve Set Up
Connect input wires to TB1 (+ve) and separate –ve’s to TB3 and TB5.
When TB3 is –ve tone 1 will sound, when TB5 is –ve tone 2 will sound.
3.4 Single Stage Alarm (a.c. version)
When the unit is powered with a.c. only a single stage alarm is available.
Tones should be selected using SW1. Connect input wires between TB1 and
TB3.
Note: In all set ups, loop in and loop out is facilitated by TB2, TB4 and TB6 as appropriate.
4. MAINTENANCE
During the working life of the unit, little or no maintenance is required. However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc., then visual inspection is recommended.
If a fault should occur, it is recommended that the unit be returned to MEDC for repair. All parts are replaceable.
If you have acquired a significant quantity of units, it is recommended that spares are also made available. Please discuss your requirements with the Technical
Sales Engineers at MEDC.
© Eaton MEDC Ltd 2017 07/17
5. CERTIFICATION/APPROVALS
Please refer to marking on the unit for specific approval details.
s 5,LISTEDFORUSEIN
USA (USL)
#LASS$IVISION'ROUPS#$
Class 1, Zone 1, Groups IIA & IIB.
s 5,3TANDARDS 5,5, s 3UITABLEFORHAZARDOUSLOCATIONlREALARMAPPLICATIONS
6. CERTIFIED TEMPERATURE
–25°C to +55°C
–13°F to +131°F
7. FUNCTIONAL SAFETY - DB1H
Introduction
The DB1H Sounder has been designed for use in potentially explosive atmospheres and harsh environmental conditions. The marine grade alloy or stainless enclosures are for use offshore or onshore, where light weight combined with corrosion resistance and strength is required.
The safety function of the Sounder is to provide a pre-determined audible warning sound when required if the correct voltage is applied to the unit. The DC version of the Sounder is designed to operate on a supply voltage tolerance of +/- 20%,
07/17
Under No fault (Normal) Operating conditions the DB1 Sounder will provide an audible warning sound when required by the system.
Under fault conditions the failure mode of the Sounder is a failure to provide an audible warning sound. For the failure rate associated with this failure mode please refer to the table below.
Assessment of Functional Safety
This Sounder is intended for use in a safety system conforming to the requirements of IEC61508.
UL has conducted a Failure Modes Effect and Diagnostic Analysis (FMEDA) of the DC version of DB1H
Sounder against the requirements of IEC 61508-2 using a Proof Test Interval of 8760hrs.
The results are shown below and are based on Route 1
H
The Sounder is classed as a Type B device
© Eaton MEDC Ltd 2017
DB1H SOUNDER
Safety Function of DB1H Sounder:
To provide a pre-described audible warning sound when required ’
DB1H Sounder DB1H Sounder
Summary of Clauses
2/7.4.2
and 2/7.4.4
Single Mode (1oo1) Redundant Mode (1oo2)
Architectural constraints
Safe Failure Fraction (SFF)
Random hardware failures: [h -1 ]
Random hardware failures: [h -1 ]
!
DD
!
DU
!
SD
!
SU
PFD @ PTI = 8760Hrs
MTTR = 8 Hrs
Average freq. of dangerous failure (high demand-PFH)[h -1 ]
Hardware safety integrity compliance
Systematic safety integrity compliance
Systematic Capability
(SC1, SC2, SC3, SC4)
Hardware safety integrity achieved
HFT=0
65%
6.45E+09
8.87E-08
0.00E+00
1.59E-07
3.89E-04
8.86E-08
HFT=1
65%
6.45E+10
8.87E-09
0.00E+00
1.59E-08
3.89E-05
8.86E-09
Route 1
H
Route 1 s
Verdict
Type B
SIL 1(1oo1)
SIL 2 (1oo2)
SIL 3(1oo1)
SIL 3(1oo1)
SC2
Limited to: SIL 1 (1oo1) & SIL 2 (1oo2) due to SFF value.
© Eaton MEDC Ltd 2017 07/17
Manual and Technical manual) in regard to all relevant fun etc; e assessed equipment:
2.
installation, configuration, overall validation, conditions and recommendations in the user documentation.
r
3.
All information associated with any field failures of th dependability management process (e.g., IEC 60300-3-2) an t .
4.
manual. t t it t such as to ensure sufficient protection against common cause failures and independence from cascading fail lures.
Eaton MEDC Ltd, Unit B, Sutton Parkway, Oddicroft Lane,
Sutton in Ashfield, United Kingdom NG17 5FB
Tel: +44 (0)1623 444444 Fax: +44 (0)1623 444531
Email: [email protected] [email protected]
Web: www.medc.com
07/17
MEDC Stock No:
TM107-ISS.D
© Eaton MEDC Ltd 2017
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