LWM-1 Controller
Alarmline Analogue Linear Heat Detection
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Monitors Alarmline Analogue sensor cables
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Provides fixed temperature and rate of rise alarms
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Easy installation and configuration
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Adjustable to sensitivity classes A1, A2, B and C as well as custom settings
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Volt free outputs for alarms and fault conditions
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VdS approval based on EN54-5: 2000*
*Restrictions on sensor cable length and sensor cable type apply.
The LWM-1 Controller is an integral part of the Alarmline Analogue Linear Heat Detection system. The controller monitors the Alarmline Analogue sensor cable and reports changes in temperature by permanent supervision of the sensor cable resistance. Configuration of the Alarmline Analogue Linear Heat Detection system is provided through a number of switch settings within the LWM-1 controller allowing setting of alarm trip settings, system sensitivity etc. Dual alarm functionality is provided with fixed temperature alarm settings as well as rate of rise alarm settings providing system flexibility. Interfacing the LWM-1 controller to the main fire alarm system is made simple by the provision of Volt Free Changeover contacts for Alarm and Fault conditions. Internal push buttons enable alarm and fault conditions to be simulated confirming correct operation of the system by operating the alarm and fault test switches together an LED test will be perfomed. An additional internal push button provides the ability to reset alarm and fault conditions providing the conditions have been cleared.
A monitored input is provided in the unit allowing a remote reset facility. Connection of a key switch or volt free switched output to the input allows the unit to be reset without removing the cover. Unit can only be reset once the alarm or fault condition has been removed. The controller is provided in a compact ABS enclosure rated IP65. A number of IP65 plastic cable glands are provided pre-fitted to the unit. LWM-1 has been approved by VdS to European standard EN54-5: 2000. To comply with this approval the maximum sensor cable length is limited to 300m, although the maximum sensor cable length that can be connected to the unit is 1,000m. The LWM-1 controller is compatible with the following Alarmline Analogue sensor cables: K82017 K82021 K82078 K98166
Sensor cable - Standard blue Sensor cable – Nylon coated Sensor cable – Bronze braided* Sensor cable – Stainless steel braid over Nylon
*Bronze braided sensor cable is not covered under the VdS approval.
In conjunction with suitable safety barriers the LWM-1 can provide an intrinsically safe detection system for hazardous areas For any further information please contact your sales representative