RTK LN1000 Manual

Intrinsically safe annunciator

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REVISION

DATED

01/11/04

12/12/06

14/06/07

21/09/07

08/02/08

05/08/08

15/05/09

26/05/09

1/12/09

24/04/12

06/09/2012

12/11/2012

11/12/2012

DESCRIPTION

Change to new format

Section 16 Revised

WIS 1211 Corrected

Updated Sequences

Table of Contents Added

EC Declaration added

Fig 13.4 Corrected

Fig 6.1, 6.2 & 13.3 Corrected

Baseefa notified body number

added and declaration updated

D of C updated in line with

current standards

Date error in D of C corrected

D of C updated in line with

current standards

Input connection drawings

updated

AUTHOR

APPROVED

TMcL

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Summary of Contents for RTK LN1000

Page 1 REVISION DATED DESCRIPTION AUTHOR APPROVED 01/11/04 Change to new format TMcL 12/12/06 Section 16 Revised TMcL 14/06/07 WIS 1211 Corrected TMcL 21/09/07 Updated Sequences 08/02/08 Table of Contents Added 05/08/08 EC Declaration added TMcL 15/05/09 Fig 13.4 Corrected 26/05/09 Fig 6.1, 6.2 & 13.3 Corrected Baseefa notified body number 1/12/09 added and declaration updated...
Page 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.
Page 3: Table Of Contents
LN1000 IS Annunciator TABLE OF CONTENTS TABLE OF CONTENTS ....................3 SECTION 1 INTRODUCTION ..................6 SECTION 2 SYSTEM DESCRIPTION & FEATURES ..........7 ..........................7 ENERAL ........................7 ERTIFICATION ........................7 YSTEM IZES ....................... 7 OMPLETE YSTEM ........................ 7 ROGRAMMABILITY ..........................
Page 4 ......................16 HANNEL NUMBERING SECTION 6 ALARM SEQUENCES ................21 ........................... 21 UMMARY ......................21 IRST UP SEQUENCE ...................... 22 UTO RESET SEQUENCE ......................22 INGBACK SEQUENCE SECTION 7 SEQUENCE TABLES ................23 ISA – M M ...................... 23 ANUAL ESET ISA –...
Page 5 PPARATUS B1, B2, ..........59 OMMONS OUND UTPUTS IS H ................59 OMMONS UTPUT ............ 60 OMMONS EMOTE USHBUTTON TATION ..................60 LARM ONNECTIONS LN1000 ANTI-STATIC PRECAUTIONS ..............61 EC DECLARATION OF CONFORMITY ..............62 OTHER RTK PRODUCTS ..................63...
Page 6: Section 1 Introduction
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.
Page 7: Section 2 System Description & Features
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.
Page 8: Servicing
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...
Page 9 LN1000 IS Annunciator SAFE AREA HAZARDOUS AREA ALARM INPUTS FROM SAFE AREA REMOTE CONTROL PUSHBUTTONS LN1000 INTRINSICALLY SAFE ANNUNCIATOR MAINS 24V DC TO OTHER I.S. EQUIPMENT DB-5 100dB SOUNDER DA-161 BATTERY BACKUP DA135 LED BEACON BASIC SYSTEM Standard system configuration showing ancillary components (Figure 2.1)
Page 10: Section 3 Inputs & Outputs
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.
Page 11: Section 4 Technical Specification
Case Stainless Steel Front fascia High impact resistant polyurethane Membrane Polyester Panel Cut Out LN1000-12 (8 or 12Way) 121 x 270mm ±0.5mm (H x W) LN1000-32 (32Way) 249 x 335mm ±0.5mm (H x W) LN1000 Corner Radii R3 max. Weight LN1000-12-P 3.8kg plus 120g per Alarm Card...
Page 12: Alarm Inputs
LN1000-AC Alarm Card Each alarm card has two independent alarm channels Alarm Inputs Alarm contacts Isolated volt free contacts, may be normally open or normally closed, selectable by DIL switch Normally closed contacts Field contact wired between H (+ve) and FC...
Page 13: Programmable Features
LN1000 IS Annunciator Programmable Features First up grouping Each channel may be internally set by DIL switches into 1 of 7 first-up groups or no group at all Alarm sequence selection ISA sequences A, M, R, F1A, F2M and F3A set by...
Page 14: Push Buttons
SYSTEM TEST [S & T] Pressing and holding Silence and Test buttons for 4 seconds will cause the LN1000 to enter a test routine. Each channel is put into the highest state of alarm and latched in, it is then necessary to operate the Acknowledge and Reset pushbuttons to clear the alarms.
Page 15: Section 5 Mechanical Details
Alarm Chassis The annunciator consists of a stainless steel case with integral card rails. The LN1000-12 is a single level unit, fitted with a LN1000-SC Sequence Card and up to six LN1000-AC Alarm Cards. The LN1000-32 is a double level unit, fitted with up to eight LN1000-AC Alarm Cards on the upper level, with an additional eight LN1000-AC Alarm Cards and a LN1000-SC Sequence Card on the lower level.
Page 16: Wall Mounting
Wall Mounting If the requirement is for a stand-alone wall mounting alarm system this can be supplied with the wall mounted variant. In this version the IS Annunciator is mounted in a stainless steel enclosure with the terminals wired and loomed around the hinge to a row of 2.5mm² terminals ready for external connection via the bottom gland plate.
Page 17 LN1000 IS Annunciator 1 7 0 .0...
Page 18 2 9 8 . 0...
Page 19 LN1000 IS Annunciator 170.0 480.0...
Page 20 100.0 298.0 720.0...
Page 21: Section 6 Alarm Sequences
LN1000 IS Annunciator SECTION 6 ALARM SEQUENCES Summary From the sequence tables shown in the following pages, it will be evident that an alarm occurring causes a flashing visual indication with audible and optional relay drive. The following pushbutton inputs summarise the user controls TEST may be operated at any time and operates on the visual indication and the audible output, turning on all LED’s, LCD’s and the audible.
Page 22: Auto Reset Sequence
Auto reset sequence In this mode, the contacts returning to normal on an acknowledged alarm causes that alarm to reset. If the alarm contact returns to normal prior to being acknowledged, the alarm will reset immediately on Acknowledge. Ringback sequence This mode is used to indicate to operators that the alarm contact has returned back to its normal state hence avoiding having to continually press the reset pushbutton, to see if the plant contacts have returned to their non alarm state.
Page 23: Section 7 Sequence Tables
LN1000 IS Annunciator SECTION 7 SEQUENCE TABLES Example Sequence Tables Each alarm channel can be configured to suit the operating sequence required, as listed in the ISA publication "Annunciator sequences and specifications" S18.1 1979. Systems can be configured with different features on different alarm ways.
Page 24: Isa - A Auto Reset
ISA – A Auto Reset ABNORMAL RETURN PROCESS NORMAL TO NORMAL ACKNOWLWDGE SEQUENCE NORMAL WHILE NORMAL AUDIBLE SILENT ABNORMAL ABNORMAL PROCESS PROCESS OR NORMAL OR NORMAL ACKNOWLEDGE WHILE ABNORMAL SEQUENCE ACKNOW SEQUENCE ALARM FLASHING AUDIBLE SILENT AUDIBLE AUDIBLE Sequence features ...
Page 25: Isa - R Ringback
LN1000 IS Annunciator ISA – R Ringback PROCESS NORMAL RESET TO ABNORMAL SEQUENCE NORMAL AUDIBLE SILENT ABNORMAL PROCESS NORMAL ACK WHILE NORMAL PROCESS OR NORMAL SEQUENCE RINGBACK SEQUENCE ALARM RETURN TO NORMAL SLOW FLASH FAST FLASH AUDIBLE SILENT AUDIBLE AUDIBLE...
Page 26: Isa - F1A First-Up Automatic Reset
ISA – F1A First-up Automatic Reset with no subsequent alarm state FIRST TO RETURN ABNORMAL TO NORMAL PROCESS NORMAL SEQUENCE NORMAL ACKNOWLEDGE AUDIBLE SILENT WHILE NORMAL (first-up reset) ABNORMAL ACKNOWLEDGE PROCESS ABNORMAL PROCESS OR NORMAL WHILE ABNORMAL SEQUENCE ACKNOW. SEQUENCE FIRST ALARM (FIRST OUT RESET) FLASHING...
Page 27: Isa - F2M-1 First - Up With Manual Reset
LN1000 IS Annunciator Manual Reset ISA – F2M-1 First-up with with no subsequent alarm flashing and silence pushbutton SEQUENCE DIAGRAM PROCESS NORMAL SEQUENCE NORMAL FIRST TO RESET WHILE ABNORMAL NORMAL AUDIBLE SILENT SUBSEQUENT TO ABNORMAL ABNORMAL PROCESS OR NORMAL SILENCE OR ACKN...
Page 28 Sequence features  Mute, acknowledge reset and lamp test pushbuttons required  Alarm audible device  Lock-in of momentary first alarm until acknowledged.  Silence pushbutton to silence the audible device while retaining first-up flashing indication  Flashing indication for first alarm only. New subsequent alarms have the same visual acknowledged alarms ...
Page 29: Isa - F3A First-Up With Automatic Reset
LN1000 IS Annunciator ISA – F3A First-up with Automatic Reset with first-up flashing and "first-up reset" pushbutton SEQUENCE DIAGRAM PROCESS NORMAL RESET WHILE NORMAL SEQUENCE NORMAL FIRST TO ABNORMAL RETURN TO NORMAL AUDIBLE SILENT SUBSEQUENT TO ACKNOWLEDGE ABNORMAL WHILE NORMAL...
Page 30 Sequence features  Acknowledge, first-up reset and lamp test pushbuttons required  Alarm audible device  Lock-in of momentary first alarm until acknowledged.  First-up flashing different from subsequent flashing.  First-up reset pushbutton to change the first-up visual indication to be the same as subsequent visual indication.
Page 31: Section 8 Mounting
LN1000 IS Annunciator SECTION 8 MOUNTING Panel mounting version Refer to Figures 6.1 and 6.2 for panel cut-out dimensions and for details covered by the mounting procedure which follows: Prepare the panel cut out to the dimensions shown in Figure 6.1 or 6.2 for the...
Page 32 Re-fitting Refitting is the reverse of the above section on the removal process. Ensure fascia straps and Pushbutton Board ribbon cable do not trap between fascia and box seal Hold fascia in position while partly tightening fascia screws Tighten fascia screws evenly to seal to the enclosure, some resistance will be felt due to the compression of the seal gasket, do not over tighten.
Page 33: Removal / Replacement Of Sequence And Alarm Cards
LN1000 IS Annunciator Removal / Replacement of Sequence and Alarm Cards Antistatic precautions should be taken when the front fascia is removed and when handling Sequence/Alarm Cards (see Appendix B for details) Grip the card at the edge above and below the LCD/LED bracket, evenly pull the card so that it slides along the guide rails to remove it from the case.
Page 34 METHOD FOR ADDING OR REMOVAL OF CARDS: BOX - CABLE HOUSING - REAR COVER AND PANEL MOUNTING BRACKETS 1) REMOVE POWER FROM UNIT. ALL MANUFACTURED FROM STAINLESS STEEL. 2) HOLD STRAPS ON EITHER SIDE OF CARDS AND PULL FIRMLY. 3) FITMENT IS THE REVERSAL OF ABOVE. 4) ENSURE CARDS ARE FULLY INSERTED BEFORE REFITTING FASCIA.
Page 35: Identification Legends
LN1000 IS Annunciator Identification Legends Annunciators are supplied with engraved legends when specified by the user. These are used to easily identify the alarm channel and by using different material colours can also differentiate between different types of alarms. The legends can easily be changed by the user. Refer to the actions below and Figure 8.3...
Page 36: Section 9 Field Wiring
SECTION 9 FIELD WIRING Certification The LN1000 IS Annunciator system must be installed and wired in accordance with the requirements of the IS System certificate and IS codes of practice. This document should be read along with the associated equipment certificates and drawings before proceeding further.
Page 37 LN1000 IS Annunciator...
Page 38: Section 10 Terminal Numbers
SECTION 10 TERMINAL NUMBERS Sequence Card Terminal Numbering: TERMINAL NO: DESCRIPTION Supply +VE from IS Isolator Supply 0V from IS Isolator Not used Not used Silence (external pushbutton) Acknowledge (external pushbutton) Reset (external pushbutton) Test (external pushbutton) B1 output B2 output Ext.
Page 39: Section 11 System Supply Connections
S E Q U E N C E C A R D WARNING Never connect the LN1000 directly to a 24VDC supply, this will result in damage to the sequence card. Always use a suitable is isolator as shown in figure 11.1...
Page 40: Section 12 System Input Connections
Figure 12.1. If normally open (close to alarm) contacts are used the terminal connections are as shown in Figure 12.2 HAZARDOUS AREA SAFE AREA NORMALLY CLOSED ALARM CONTACT CHANNEL 1 UPPER WINDOW NORMALLY CLOSED ALARM CONTACT LOWER CHANNEL 2 WINDOW LN1000/AC ALARM CARD Alarm ways wired with normally closed contacts (Figure 12.1)
Page 41 LN1000 IS Annunciator HAZARDOUS AREA SAFE AREA NORMALLY OPEN ALARM CONTACT CHANNEL 1 UPPER WINDOW NORMALLY OPEN ALARM CONTACT LOWER CHANNEL 2 WINDOW LN1000/AC ALARM CARD Alarm ways wired with normally open contacts (Figure 12.2)
Page 42 Figure 12.3 and for normally open alarm contacts in Figure 12.4 below HAZARDOUS AREA SAFE AREA IS RELAY N/C ALARM CONTACT ALARMCONTACT SUPPLY 10-250V AC/DC UPPER WINDOW IS RELAY N/C ALARM CONTACT LOWER WINDOW LN1000/AC ALARM CARD Alarm ways with normally closed contacts mounted in the safe area (Figure 12.3)
Page 43 LN1000 IS Annunciator HAZARDOUS AREA SAFE AREA N/O ALARM IS RELAY CONTACT ALARMCONTACT SUPPLY 10-250V AC/DC UPPER WINDOW N/O ALARM IS RELAY CONTACT LOWER WINDOW LN1000/AC ALARM CARD Alarm ways with normally open contacts mounted in the safe area (Figure 12.4)
Page 44: Inhibit Inputs
IS relay, i.e. DAD149 for IS signals or DAE149 for non IS signals. Remote pushbuttons should be connected using the normally open contacts. Terminal connections are shown in Figure 12.5 below HAZARDOUS AREA SAFE AREA SILENCE ACKNOWLEDGE RESET TEST LN1000/SC SEQUENCE CARD Remote pushbutton connections (Figure 12.5)
Page 45: Section 13 System Output Connections
LN1000 IS Annunciator SECTION 13 SYSTEM OUTPUT CONNECTIONS General In addition to the audible output signals there are various additional outputs available from the annunciator. These can be used to trigger control action from the safe area or activate further alarms.
Page 46 MTL5021 DB-5 100dB IS SOUNDER IS RELAY LN1000/SC SEQUENCE CARD Connections to sounder using hazardous area mounted IS relay (Figure 13.2) WARNING When using the DA-149 is relays, ensure the polarity is correct for both the coil and contact connections.
Page 47: Common Outputs
LN1000 IS Annunciator Common outputs Two additional outputs are available from the Sequence Card designated B1 and B2. Both these outputs can be connected to the safe area using IS Relays as shown in Figure 13.4 B1 output The B1 output is either active if any channel is in alarm or alternatively active if any field contact in Field Contact Group is abnormal.
Page 48: Alarm Outputs
The second Group (GTB) may be used individually or grouped in the same way as group A HAZARDOUS AREA SAFE AREA IS RELAY GTA1 N/O CONTACTS GTB1 CLOSE ON ALARM GROUP ALARM RELAY ENERGISED ON ANY ALARM IN THE GROUP GTA2 GTB2 Group Trip output connections (Figure 13.4) LN1000/AC ALARM CARD...
Page 49: Alarm Contact Repeat Outputs
LN1000 IS Annunciator Alarm contact repeat outputs If it is required that the alarm contacts are repeated into the safe area, this must be done by isolating the signals via a DAA149 IS relay. The repeat relays are driven by the RTA output which is set to repeat the alarm contact information.
Page 50: Section 14 System Configuration & Programming
General To configure the system for your particular requirements DIL switches are set on the Sequence Card (LN1000-SC) for system configuration and on each Alarm Card (LN1000- AC) for individually configuring each alarm channel. Unless otherwise specified all switches will be configured in the default position which is UP To gain access to the DIL switches firstly remove the fascia.
Page 51: B1 Output
In normal situations the audible is silenced permanently by pressing the SILENCE pushbuttons and the audible does not re-sound. On the LN1000 it is possible to program this audible to re-sound until the alarm channel has returned to normal.
Page 52: Alarm Card Dil Switch Settings
L K 1 L K 1 S IL E N C E S IL E N C E L K 2 L K 2 A C K N O W L E D G E A C K N O W L E D G E L K 3 L K 3 R E S E T...
Page 53: Group Trip Outputs
LN1000 IS Annunciator FUNCTION DOWN GTA Output mode Alarm sequence Field contact GTB Output mode Alarm sequence Channel audible GT Output Polarity High B1 Field Contact Group Field contact input delay Field contact mode Normally closed Normally open First-up group number bit 2...
Page 54: Alarm Input Delay
Alarm Input Delay Field contact input delay is active when DIL switch 5 is set Down. The time delay can then be adjusted between 3 and 30 seconds by adjusting the channel's delay time potentiometer situated on the front of the Alarm Card. Increase the delay time by turning clockwise.
Page 55: Alarm Sequence Table
LN1000 IS Annunciator Alarm sequence table SWITCH ISA ALARM SEQUENCE DOWN DOWN DOWN DOWN DOWN DOWN DOWN...
Page 56: Section 15 Commissioning
Tools required are: Small straight blade screwdriver for terminals Medium straight blade screwdriver for terminal cover and panel mounting brackets RTK supplied Double Hex 8mm socket for removal of front fascia IS approved Multimeter (at least 20kohm/V) Commissioning Check all alarm contacts, external devices and remote pushbuttons for earth faults.
Page 57: Section 16 Trouble Shooting
LN1000 IS Annunciator SECTION 16 TROUBLE SHOOTING For these checks the annunciator fascia and terminal cover can be removed whilst the unit is powered. There is no displays visible on either LCD or LED - Check 1. The power to the IS Isolator is switched on 2.
Page 58: The Is Relays Are Not Switching Correctly - Check
Include the LN1000 system in the inspection schedule for IS equipment Recommended Spares The LN1000 system is very reliable. If the annunciator is essential to the safe operation of the plant it is recommended that a stock of the following spares is maintained:...
Page 59: Section 17 Appendix A
LN1000 IS Annunciator SECTION 17 APPENDIX A Cable Parameters Safe Area Apparatus The Safe Area Apparatus is a MTL5021 isolating interface The parameters of interconnecting cables must not exceed the following: L/R Ratio Group Capacitance (uF) Inductance (mH) (uH/ohm) 0.17 0.88...
Page 60: A4: Commons Card Remote Pushbutton Station
16,640 Alarm Card Connections On the LN1000/12 the alarm card terminals are identified by the AL1 to AL6 (AL X) markings on the backplane. On the LN1000/32 the alarm card terminals are identified by the AL1 to AL8 (AL X) markings on the top and the bottom backplanes.
Page 61: Ln1000 Anti-Static Precautions
PCB circuits can easily be damaged. It is important to be aware of this risk when configuring the LN1000, since this involves opening the case and adjusting dip switches, links and potentiometers on the PCB's. To minimise the risk of static damage, always configure the units using ESD Protection techniques.
Page 62: Ec Declaration Of Conformity
EC DECLARATION OF CONFORMITY This is to certify that the LN1000 Intrinsically Safe Alarm Annunciator Manufactured by:- RTK INSTRUMENTS LTD ST JAMES BUSINESS PARK KNARESBOROUGH NORTH YORKSHIRE HG5 8PJ Conforms to the protection requirements of the following directives:  Council directive 89/336/EEC (EMC Directive) to BS EN 61000-6-4 and BS EN 61000-6-2 ...
Page 63: Other Rtk Products
LN1000 IS Annunciator OTHER RTK PRODUCTS RTK Instruments Ltd is fully ISO9001:2008 approved and manufactures a comprehensive range of complementary products from our factory in Knaresborough, UK for use in the Industrial Control and Instrumentation field as per the summary list provided below.

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