Who are GLT Exports Ltd? Your Local Representative Project Reference Secure Catalogue

Conventional Fire Equipment Analogue Fire Equipment Fire Suppression CO Monitoring & Ventilation Systems Combustible Gas Detection Stand Alone Fire Alarm Detectors Temporary Fire Alarms Fire Defence Cable Fire Telephone System Linear Heat Detection System Voice Evacuation System Gas Extinguishing System Aspiration Detection System Accessories Emergency Light

Manuals Software Zeta Product Catalogue Declaration of Conformity Certificate List Approval Certificates

Contact GLT Exports Ltd

Installation Instructions

TC9208 Series

Monitoring Control Unit (MCU) for Self-Adaptive Compensation Line Type Heat Detector

Type LDM92198/F - Case and PCB assembly for Fixed Temperature Detector.

Type LDM92198/R - Case and PCB assembly for ROR Temperature Detector.

Type LDM92198/FR - Case and PCB assembly for Fixed and ROR Temperature.

*LDM92198 for PCB assembly only, LDM92198/L/XX for Location Type, LDM92198/XX/COM for RS485 communication type, LDM92198/XX/ACT for Activation Type.

 

Note:

1. For LDM92198 Series MCU, it can be reset by interrupting DC24V power supply via a suitable switch or by pressing "RESET" button on the membrane of the MCU.
2. For Rate-of-Rise and Fixed Temperature Type Detector, Fire A1 show ROR alarm, Fire A2 show Fixed Temperature Alarm. For Fixed temperature Type Detector, A1 show pre-alarm (the first level alarm), Fire A2 show final alarm (the second alarm).
3. Terminal 11 for Explosive-Proof type or shielding type LHD.
4. For further information refer to manual "TC9208 Line Type Heat Detector".

 

Operational Specification

 

Monitoring Supply:

Voltage: 24 Vdc±20%
Current: Quiescent - <65mA Fault Alarm - <60mA
Fire A1 or A2 Alarm - <85mA Fire A1 & A2 Alarm - <100mA

Operating temperature Range:

-20°C - 60°C (Special for 70°C)

LHDC Input:

Two levels of alarm - F1 & F2 Fault monitored. - O/C & S/C

Relay Contacts:

1 A @ 24Vdc
Fire Alarm A2: 1 Set
Fire Alarm A1: 1 Set
Fault Alarm: 1 Set

Indications:

Fire Alarm: 2 off - A1 (pre) & A2 (full) - Red LED's
Fault 1 off - LHDC - Yellow LED
Supply: 1 off - monitoring - Green/Yellow

Actuation Supply (for Actuation Type LHD)

Fully isolated from Monitoring Supply.
Voltage: 18Vdc to 36Vdc
Current: Quiescent - <10mA - Firing Pulse - 4A
(nom) - Dependant on actuation load.

Actuation Output (for Actuation Type LHD)

Thyristor switched - > 8 A - Fuse protected - 2A 20mm
Relay isolated fault monitoring - Loop
Increment fault set point. - Earth / common mode fault.

Radio Interference Suspectibility:

will withstand 5% ms.50HZ supply voltage noise or 1 Vrms. RFI immunity at 10v/m field strength over band 20~500MHz. Sensor noise with negligible performance change.

Enclosure:

Polycarbonate or ABS to IP67.

Weight:

0.30kg (Normal type) ~ 0.78kg (Explosive-proof Type)

 

 

Note:

1. The Terminal Resistor value should be specified by the fire control panel of manufacturer.
2. Different connection modes can be chosen to realize "and", "or" logic.
3. For further information refer to manual "TC9208 Line Type Heat Detector".

 

Sensor Cable

Superline analogue sensor cable consists of a 4-core and 1-reinforced core cable. Two of the four colour coded conductors are insulated with a negative temperature Coefficient material. The other two conductors have a normal PVC insulation. The cores are twisted together and protected by an outer sheath of high temperature, flame-retardant PVC insulation (see fig.2), or other type outer sheath, such as corrosion-proof.

At one end of the sensor cable, the four conductors are connected to an LDM92198 Monitoring Control Unit (optionally via a junction box). At the outer end, the conductors are joined and hermetically sealed to form two loops. Both loops are cocontinuously monitored for open and short circuit faults. A short or disconnection of either loop initiates a fault signal in the MCU.

Note: Theromoplastic Tube should be heated with temperature range 120~150°C

Note:

1. The Thermoplastic tube must be installed by heated perfectly
2. the connection point of the sensor cable must be water tight seal. The junction box must be IP65 upwards.

 

Connecting Cable

A length of Sensor cable canbe divided into several parts, but the junction box must be used to connect the partial cable and make it water tight. In addition, the insulated resistor of connecting cable must be more that 500MΩ.

 

 

Hazardous Area Usage

SuperLine Sensor cable can be installed within hazardous environments. With the series LDM92198 MCU installed within a classified safe area and the use of approved zener barrier configuration installations within the Zone 0 group 11C and less arduous conditions.

 

Setting the Monitoring Setting

In a general way, the calibration switch setting should be determined from the maximum ambient temperature, the alarm temperature and the total length of sensor cable. But it is different from other manufacturer's LHD products, LDM92198 Series MCU can adapt variety of surroundings temperature to give exact alarm. So if less than 200m for Fixed temperature and Rate of Rise Heat Detector (FT-ROR Type), or 300m for Fixed temperature Heat Detector (FT Type) are used, we only need to set Alarm Temperature for 1m (or 0.91m), the Zone Monitor unit can give exact alarm.

 

1. Method for Parameters Setting

The parameters can be set through computer or PDA using special software, as the following figure. User can set the following parameters: Total length of one Zone Loop, temperature of Pre-Alarm and Alarm, Maximum environmental temperature, and network physical address. Only an Engineer of Zeta can set the following parameters: sensitivity, precision, function etc...

 

2. Parameter Setting

Recommendatory parameters are the following: For indoor usage, the Alarm above the maximum enviornmental temperature, for example when the maximum environmental temperature is 45°C, well then the Alarm temperature should be equal to or more than 90°C. For outdoorusage, the Alarm temperature should be at least 60°C above the maximum surface temperature of protected objects if LHDC is installed on the surface of protected objects, and 50°C above the maximum surface temperature of protected objects if LHDC is installed at a distance (above 50mm) of the surface.

User can set the parameters arbitrarily if the parameter accord with the above methos, MCU can self-Adapt the surroundings variety, including environment temperature and humidity.

 

Display and Operate

The front panel of LDM92198 Series MCU and the function of each control and indicator is described below.

 

Temperature/Fire Position/Heated Length Displayer

For LDM92198/F, LDM92198/FR and LDM92198/R, the displyer shows the type of LHD, or equivalent environment temperature (if specialized requirement from customers). For LDM92198/XX/L, the displayer also shows fire (or overheat) position.

 

Fire A2 LED

Continuous operation indicates alarm for fixed temperature, an overheat of fire condition.

Fire A1 LED

Continuos operation indicates pre-alarm for fixed temperature or alarm for Rate-of-Rise temperature, and overheat of fire condition.

L.H.D.C Fault LED

A yellow LED indicates a sensor cable fault within Superline system, either open or short circuit

LHD Run/Fault LED

A green LED indicates notmal system operation, a yellow LED indicates fault system, either power too low or fault PCB.

Test: Fire and Fault Switch

To test for a pre-alarm and fire alarm indication, press down the first test button (for up to 2 seconds), and ensure that the fire FIRE A1 LED is lit, then have about 2 seconds interval, press the fire test button again (for up to 5 seconds), to lighten FIRE A2 LED.

To test for a fault indication, press down the fault test button (for up to 2 seconds), and ensure that the fire AULT LED is lit.

To reset the system press the Reset Button.

the parameters setting system also can be used to monitor fire alarm and fault alarm by software interface.