RTK LN1000 User manual

REVISION DATED DESCRIPTION AUTHOR APPROVED
3 01/11/04 Change to new format PC TMcL
4 12/12/06 Section 16 Revised PC TMcL
5 14/06/07 WIS 1211 Corrected PC TMcL
6 21/09/07 Updated Sequences PC DF
7 08/02/08 Table of Contents Added PC DF
8 05/08/08 EC Declaration added KU TMcL
9 15/05/09 Fig 13.4 Corrected PC DA
10 26/05/09 Fig 6.1, 6.2 & 13.3 Corrected PC DA
11 1/12/09
Baseefa notified body number
added and declaration updated WF PH
12 24/04/12
D of C updated in line with
current standards BC WF
13 06/09/2012 Date error in D of C corrected NG WF
14 12/11/2012
D of C updated in line with
current standards WF PH
15 11/12/2012
Input connection drawings
updated DF BC
LN1000 Intrinsically Safe Annunciator

2
© RTK Instruments LTD 2004
The copyright in this work is vested in RTK Instruments Ltd and this document is issued for
the purpose only for which it is supplied. No licence is implied for the use of any patented
feature. It must not be reproduced in whole or in part, or used for tendering or manufacturing
purposes except under an agreement or with the consent in writing of RTK Instruments Ltd
and then only on the condition that this notice is included in any such reproduction.
Information furnished is believed to be accurate but no liability in respect of any use of it is
accepted by RTK Instruments Ltd.

LN1000 IS Annunciator
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TABLE OF CONTENTS
TABLE OF CONTENTS..............................................................................................3
SECTION 1 INTRODUCTION.....................................................................................6
SECTION 2 SYSTEM DESCRIPTION & FEATURES ................................................7
GENERAL .............................................................................................................................. 7
CERTIFICATION...................................................................................................................... 7
SYSTEM SIZES....................................................................................................................... 7
COMPLETE SYSTEM............................................................................................................... 7
PROGRAMMABILITY................................................................................................................ 7
MOUNTING ............................................................................................................................ 7
SERVICING ............................................................................................................................ 8
LIGHTWEIGHT........................................................................................................................ 8
GROUP OUTPUTS.................................................................................................................. 8
INPUTS.................................................................................................................................. 8
SECTION 3 INPUTS & OUTPUTS............................................................................10
TERMINATIONS AND INTERCONNECTIONS.............................................................................. 10
LN1000-AC ALARM CARD................................................................................................... 10
LN1000-SC SEQUENCE CARD............................................................................................. 10
SECTION 4 TECHNICAL SPECIFICATION.............................................................11
LOCATION ........................................................................................................................... 11
POWER REQUIREMENTS ...................................................................................................... 11
TERMINALS.......................................................................................................................... 11
EMC COMPLIANCE............................................................................................................... 11
ENVIRONMENT..................................................................................................................... 11
ENVIRONMENTAL PROTECTION ............................................................................................ 11
CONSTRUCTION................................................................................................................... 11
PANEL CUT OUT.................................................................................................................. 11
WEIGHT .............................................................................................................................. 11
ALARM INPUTS .................................................................................................................... 12
INHIBIT INPUTS .................................................................................................................... 12
ALARM OUTPUTS................................................................................................................. 12
PROGRAMMABLE FEATURES ................................................................................................ 13
LN1000-SC SEQUENCE CARD............................................................................................. 13
INPUT.................................................................................................................................. 13
OUTPUTS ............................................................................................................................ 13
PUSH BUTTONS................................................................................................................... 14
OTHER FEATURES............................................................................................................... 14
SECTION 5 MECHANICAL DETAILS......................................................................15
ALARM CHASSIS.................................................................................................................. 15
FASCIA PANEL..................................................................................................................... 15
ALARM CARDS..................................................................................................................... 15
SEQUENCE CARD ................................................................................................................ 15
PANEL MOUNTING ............................................................................................................... 15
WALL MOUNTING................................................................................................................. 16

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CHANNEL NUMBERING ......................................................................................................... 16
SECTION 6 ALARM SEQUENCES..........................................................................21
SUMMARY ........................................................................................................................... 21
FIRST-UP SEQUENCE ........................................................................................................... 21
AUTO RESET SEQUENCE ...................................................................................................... 22
RINGBACK SEQUENCE.......................................................................................................... 22
SECTION 7 SEQUENCE TABLES...........................................................................23
ISA –MMANUAL RESET...................................................................................................... 23
ISA –AAUTO RESET .......................................................................................................... 24
ISA –RRINGBACK.............................................................................................................. 25
ISA –F1A FIRST-UP AUTOMATIC RESET.............................................................................. 26
ISA –F2M-1 FIRST-UP WITH MANUAL RESET....................................................................... 27
ISA –F3A FIRST-UP WITH AUTOMATIC RESET...................................................................... 29
SECTION 8 MOUNTING...........................................................................................31
PANEL MOUNTING VERSION.................................................................................................. 31
REMOVAL............................................................................................................................ 31
REMOVAL /REPLACEMENT OF SEQUENCE AND ALARM CARDS .............................................. 33
IDENTIFICATION LEGENDS.................................................................................................... 35
SECTION 9 FIELD WIRING......................................................................................36
CERTIFICATION.................................................................................................................... 36
GENERAL ............................................................................................................................ 36
SECTION 10 TERMINAL NUMBERS.......................................................................38
SEQUENCE CARD TERMINAL NUMBERING:............................................................................ 38
ALARM CARD TERMINAL NUMBERING: .................................................................................. 38
SECTION 11 SYSTEM SUPPLY CONNECTIONS...................................................39
POWER SUPPLY .................................................................................................................. 39
SECTION 12 SYSTEM INPUT CONNECTIONS.......................................................40
ALARM INPUTS -HAZARDOUS AREAS.................................................................................... 40
INHIBIT INPUTS .................................................................................................................... 44
EXTERNAL PUSHBUTTON INPUTS .......................................................................................... 44
SECTION 13 SYSTEM OUTPUT CONNECTIONS...................................................45
GENERAL ............................................................................................................................ 45
AUDIBLE OUTPUTS............................................................................................................... 45
COMMON OUTPUTS.............................................................................................................. 47
B1 OUTPUT ......................................................................................................................... 47
B2 OUTPUT ......................................................................................................................... 47
ALARM OUTPUTS................................................................................................................. 48
ALARM CONTACT REPEAT OUTPUTS...................................................................................... 49
SECTION 14 SYSTEM CONFIGURATION & PROGRAMMING..............................50
GENERAL ............................................................................................................................ 50
COMMONS CARD DIL SWITCH SETTINGS.............................................................................. 50
B1 OUTPUT......................................................................................................................... 51
AUDIBLE RE-SOUND............................................................................................................. 51

LN1000 IS Annunciator
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AUDIBLE RE-SOUND TABLE................................................................................................... 51
INTEGRAL PUSHBUTTON LINKS............................................................................................. 51
ALARM CARD DIL SWITCH SETTINGS ................................................................................... 52
GROUP TRIP OUTPUTS ........................................................................................................ 53
GROUP TRIP A .................................................................................................................... 53
GROUP TRIP B .................................................................................................................... 53
B1 FIELD CONTACT GROUP ................................................................................................. 53
ALARM INPUT DELAY ........................................................................................................... 54
FIELD CONTACT MODE ........................................................................................................ 54
FIRST-UP GROUP ................................................................................................................ 54
FIRST UP GROUP TABLE ....................................................................................................... 54
ALARM SEQUENCE .............................................................................................................. 54
ALARM SEQUENCE TABLE..................................................................................................... 55
SECTION 15 COMMISSIONING...............................................................................56
TOOLS REQUIRED................................................................................................................ 56
COMMISSIONING.................................................................................................................. 56
SECTION 16 TROUBLE SHOOTING.......................................................................57
THERE IS NO DISPLAYS VISIBLE ON EITHER LCD OR LED -CHECK......................................... 57
DISPLAYS DO NOT OPERATE WHEN TEST PUSHBUTTON PRESSED -CHECK............................. 57
ALL ALARM CHANNELS FUNCTION INCORRECTLY -CHECK...................................................... 57
ONE CHANNEL FUNCTIONS INCORRECTLY -CHECK................................................................ 57
THE DIL SWITCH PROGRAMMING DOES NOT FUNCTION -CHECK............................................ 57
THE AUDIBLE IS NOT WORKING CORRECTLY -CHECK............................................................. 57
THE IS RELAYS ARE NOT SWITCHING CORRECTLY -CHECK ................................................... 58
ROUTINE MAINTENANCE....................................................................................................... 58
RECOMMENDED SPARES ..................................................................................................... 58
SECTION 17 APPENDIX A.......................................................................................59
CABLE PARAMETERS ........................................................................................................... 59
A1: SAFE AREA APPARATUS........................................................................................... 59
A2: COMMONS CARD B1, B2, AND EXT.SOUND OUTPUTS............................................... 59
A3: COMMONS CARD IS HORN OUTPUT.......................................................................... 59
A4: COMMONS CARD REMOTE PUSHBUTTON STATION.................................................... 60
A5: ALARM CARD CONNECTIONS.................................................................................... 60
LN1000 ANTI-STATIC PRECAUTIONS...................................................................61
EC DECLARATION OF CONFORMITY ...................................................................62
OTHER RTK PRODUCTS ........................................................................................63

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SECTION 1 INTRODUCTION
The LN1000 annunciator is an intrinsically safe process alarm system certified for installation
in Zones 0, 1, 2 IIB and IIC hazardous areas.
The annunciator is a totally unique product which provides an ideal solution to alarm
monitoring problems where an operator needs additional information on the plant status and
control over external parts of the plant.
Being certified to Ex ia means there are no restrictions with regard to maintenance whilst the
power is applied as there are with Ex d, Ex p or Ex N equipment.
The annunciator system consists of three parts; the Chassis (12 way or 32 way), the
Sequence Card and the Alarm Card.
Each system will consist of the chassis complete with the Sequence Card, which controls the
common functions, and as many Alarm Cards as necessary to cover all the alarm points to
be monitored.
The power for the annunciator is supplied from the safe area through a single certified
isolating interface, which avoids the requirement for a high integrity earth. This single IS
interface is sufficient to drive up to 32 alarm channels.
The annunciator functions in a similar manner to a conventional, safe area annunciator, but
because of the limited power available the information is displayed using a combination of
high efficiency LED's and LCD’s in the place of incandescent lamps.
The system is fully programmable, via DIL switches, for a range of commonly used functions
and features. The alarm sequences are based on the sequences listed in the ISA publication
"Annunciator Sequences and Specifications" S18.1 -1979.
The operator can respond to alarms using either integral or remote pushbuttons.
The standard system is panel mounting to allow customers to incorporate it into their control
systems but if a stand-alone alarm system is required RTK can offer a wall mounting version
which is fully self contained in a stainless steel enclosure.
The LN1000 annunciator is available with a range of complementary products, manufactured
by RTK; these will allow signal transfer between hazardous to safe areas (DA-149 IS
Relays), provide higher volume audibles (DB-5 and DB-7 IS Sounders) and flashing beacons
(DA-135 IS LED Beacon).
With this range of products it is very easy to design and configure a comprehensive alarm
monitoring package for any hazardous area.

LN1000 IS Annunciator
7
SECTION 2 SYSTEM DESCRIPTION & FEATURES
General
The LN1000 intrinsically safe annunciator is a totally unique product which allows operators
to monitor the alarm status of critical parameters in any hazardous area. Not only will the
LN1000 give detailed information of the plant alarm status but it can also be used to control
sections of the plant both in the hazardous area and, via isolating relays, in the safe area.
Certification
The LN1000 is certified by BASEEFA to Ex ia IIB T4, with the 8 way version being certified
by BASEEFA to Ex ia IIC T4. This certification is suitable for use in zones 0, 1 and 2.
BASEEFA certify that the product complies to EN60079-0 and EN60079-11
System Sizes
Two chassis sizes are available as standard, a 12 way (size used for 8 way and 12 way
units) and a 32 way.
The chassis always contains the Sequence Card which controls the common functions and
group outputs.
Each Alarm Card monitors two alarm channels, these are simply added to the chassis to
make up the alarm system of the required size.
Complete System
Figure 2.1 on the following page shows a typical system, those parts shown shaded illustrate
an alarm system in its simplest form.
All the complementary parts needed to design a more complex system are manufactured by
RTK and can be supplied together with interconnection diagrams.
RTK Instruments will help in designing systems and providing all components and details of
how the separate products interconnect.
Programmability
The annunciator alarm sequences, functions and features are programmable via the on-
board DIL switches.
This covers different alarm sequences, normally open or normally closed alarm contacts,
first-up groups, output functions and time delays.
Most features are programmable down to each individual alarm way.
Mounting
The standard system is supplied suitable for panel mounting for customers to incorporate
into their control systems.
A wall mounting version is also available for stand-alone systems, these are mounted in IP65
stainless steel enclosures and fully wired to terminals ready for on-site connection via the
bottom gland plate.

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Servicing
As the LN1000 is certified as intrinsically safe, live inspection and maintenance procedures
can be carried out at any time.
All configuration and maintenance is carried out from the front by simply removing the front
fascia and withdrawing the cards.
Lightweight
Being constructed from stainless steel and polyurethane mouldings make the LN1000
extremely lightweight in comparison to conventional flameproof and Type 'N' systems. This
gives great benefits when space and payload are critical factors, especially offshore.
Group Outputs
A number of outputs are available as standard to drive external audibles and control other
parts of the plant in the advent of certain alarms occurring.
These outputs are programmable to operate in many different ways.
Inputs
The alarm inputs are normally situated in the hazardous area but can also be connected to
the LN1000 from the safe area if connected via IS Relays (Type DA-149).
The other inputs such as "alarm inhibit" and pushbuttons should all be local to the LN1000.
Terminals are available as standard to fit external pushbuttons if required and the integral
pushbuttons on the fascia can be disabled.

LN1000 IS Annunciator
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Standard system configuration showing ancillary components (Figure 2.1)
DAE
149
DAD
149
PSU
DA-161
BATTERY
BACKUP
REMOTE
CONTROL
PUSHBUTTONS
DA135
LED BEACON
DB-5
100dB SOUNDER
TO OTHER I.S.
EQUIPMENT
ALARM INPUTS
FROM SAFE AREA
AC
MAINS 24V DC
LN1000
INTRINSICALLY SAFE
ANNUNCIATOR
BASIC SYSTEM
SAFE AREA HAZARDOUS AREA

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SECTION 3 INPUTS & OUTPUTS
Terminations and interconnections
All connections to the LN1000 Annunciator are via rear mounted screw terminals. These
terminals are suitable for cables up to 2.5mm².
In the wall mounted versions the input and output terminals are wired to a row of
2.5mm²terminals on the backplane.
The Sequence Card and the Alarm Cards are all interconnected by a common backplane.
This backplane is used to supply power to the Alarm Cards, synchronise the flashing of the
LED’s, ascertain the first-up alarm in any sequence, connect the pushbutton controls and
provide a drive signal to the local horn, the external sounder outputs and all group outputs.
LN1000-AC Alarm Card
The Alarm Card monitors two alarm channels and each channel has the following inputs and
outputs:
ALARM INPUT: CONNECTED TO THE VOLT-FREE ALARM CONTACTS
INHIBIT INPUTS: Connected To Volt-Free Contacts To Inhibit That Alarm Channel
GROUP A OUTPUT: Configurable To Follow The Alarm Logic Or The Field Contact
GROUP B OUTPUT: Configurable To Follow The Alarm Logic Or The Audible
LN1000-SC Sequence Card
Each system will have a Sequence Card which monitors and controls the common functions
as follows:-
PUSHBUTTON
INPUTS: FOR TEST, ACKNOWLEDGE, RESET AND SILENCE PUSHBUTTONS
HORN OUTPUT: Not Used
EXT SOUND: This Output Is Used To Drive An Is Relay, Which In Turn Will Switch
External Higher Level Audible Devices.
B1 OUTPUT: Configurable To Follow The Alarm Logic Or Field Contacts
B2 OUTPUT: Reflash Output Gives A One Second Pulse On New Alarms