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LN1000 Intrinsically Safe Alarm Annunciator

LN1000 Intrinsically Safe Alarm Annunciator

Product catalog summary

Overview: The LN1000 Intrinsically Safe Annunciator is a modular alarm system designed for hazardous areas, certified under ATEX standards. It supports up to 32 channels powered through a single IS interface and is compatible with various intrinsically safe alarms.

Specifications: The system is lightweight, constructed from stainless steel and polyurethane, and does not require flameproof or purged cabinets. It is field-mountable and sealed to IP65, suitable for harsh environments.

Features: The LN1000 is fully field programmable, allowing for different alarm sequences and functionalities. It includes adjustable time delays to prevent false alarms and supports a 'first-up' feature to identify the initial alarm in a sequence.

Installation: Installation is straightforward, with no need for explosionproof conduits. The system can be panel-mounted or supplied in a pre-wired IP65 cabinet for wall mounting.

Operation: The annunciator uses high brightness LEDs and LCDs for alarm indication. It supports various ISA alarm sequences and can be programmed for automatic or manual reset. The system includes controls for silencing, acknowledging, and resetting alarms.

Ancillary Equipment: The system can be expanded with additional devices like sounders and beacons for enhanced alarm notification. It uses IS relays for signal transfer between safe and hazardous areas.

Applications: Suitable for both large and small systems, the LN1000 can be integrated with other RTK products to form a complete alarm package, ensuring clear and effective alarm management in hazardous environments.

Technical Specification: The device is certified under ATEX standards for use in hazardous areas (Zones 0, 1, or 2) and complies with various safety and environmental standards. It is ATEX certified to EN50014:1997, EN50020:2002, and EN50284:1999, classified as Group II, Category 1G, EEx ia IIC T4, with a temperature range of -20ºC to +60ºC. The certificate number is Baseefa02ATEX0184.

Safety Parameters: Key safety parameters include Ui = 30V, Ii = 165mW, Pi = 1.2W, Ci = 47nF, and Li = 0.44mH. The device should be powered from an EEx ia IIC certified interface with output parameters lower than these.

Recommended Interfaces: IS Isolators such as WIS1212 are recommended for use with this device.

Inputs: The device supports up to 12 or 32 alarm inputs, which must be isolated. Alarm inputs can be configured as normally open or closed. Inhibit inputs allow individual alarm channels to be disabled. Four membrane pushbuttons are standard, with options for remote wiring.

Outputs: Sequence card outputs include external sound control and group outputs for DA-149 IS Relays. Alarm card outputs provide two group outputs per channel, configurable to follow alarm logic or input.

General Specifications: The device requires a power supply of 18-35VDC at 75mA max. It complies with EMC standards EN61000-6-2:2001 and EN61000-6-4:2001. Operating temperature is 0 to 60ºC, with storage from -20 to 80ºC. Humidity tolerance is 0-95% RH, non-condensing.

Protection and Construction: Panel mount protection is IP65, with rear enclosure protection at IP20. Wall mount protection is IP65. The case is stainless steel, with a high-impact resistant polyurethane front facia and polyester membrane.

Weight and Dimensions: The 12-way panel mount weighs 3.8kg, and the 32-way panel mount weighs 8.0kg. Wall mounts weigh 20.0kg and 44.0kg, respectively. Additional weight for each alarm card is 120g.

Order Code: The order code specifies chassis size (12 or 32 way), number of alarm channels, and mounting type (panel or wall mount).

Catalog excerpts

LN1000 Intrinsically Safe Alarm Annunciator-1

EEx ia IIC T4 Ideal for installation in any zoneUp to 32 channels can bepowered through one ISinterfaceField-mounting product:flameproof or purged cabinets not requiredUser-programmable alarm sequences to ISA-S18.11979 Compatible with a range ofintrinsically safe audible and visual alarmsAlarm indication by combined bright LEDs and LCDs >

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LN1000 Intrinsically Safe Alarm Annunciator-2

Complete Alarm Package As specialists in the supply of all types of alarm products RTK can provide all the components necessary to produce acomplete alarm package or can evenprovide the whole package fully wiredand ready to install. Group Outputs The Sequence Card has outputs to drive external sounders and also two group outputs which are DIL switch selectable to follow the alarm logic or the alarm contacts. In conjunction with these group outputs each alarm channel also has two outputs configurable to follow the alarm contact, the audible or the alarm logic. These outputs can be linked to providegroup...

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LN1000 Intrinsically Safe Alarm Annunciator-5

DB5 and DB7 Intrinsically SafeSounders Triggered from the LN1000 these IP65certified Sounders have outputs greater than100dBA. The user can select from26 different tones. RT Series PSU DA-149 Intrinsically Safe Relays > DA135 Intrinsically Safe Beacons Asaleading supplier of AlarmAnnunciators and Alarm Systems, RTK Instruments is able to specify, design, manufacture and commission acomplete alarm system for the clients exact application and industry requirements. The parts shown below detail somekey components that are used in these hazardous area alarm systems but many other options are available...

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LN1000 Intrinsically Safe Alarm Annunciator-6

PROCESSSEQUENCELEDLCDAUDIBLE NormalNormalOff > PROCESSSEQUENCELEDLCDAUDIBLE NormalNormalOff > resetwhilenormal acknowledge toabnormal returntonormalacknowledge while normalacknowledgewhileabnormal toabnormal N N Silent Silent > PROCESSSEQUENCELEDLCDAUDIBLE Abnormal > or Normal > PROCESSSEQUENCELEDLCDAUDIBLE Abnormal > or Normal > PROCESSSEQUENCELEDLCDAUDIBLE AbnormalAcknowledgedOnASilent > PROCESSSEQUENCELEDLCDAUDIBLE Abnormal > or Normal AcknowledgedOn A AlarmFlashing (A) AlarmFlashing(A) > N N N Silent Audible Audible > WITH NO SUBSEQUENT ALARMFLASHING AND SILENCE PUSHBUTTON WITH FIRST OUT...

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LN1000 Intrinsically Safe Alarm Annunciator

LN1000 Intrinsically Safe Alarm Annunciator

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