DSC sg-dv4420 v1-1 um en 29002408 r001 p65

INTRODUCTION Sur Gard model SG DV4420 is a combination of control panel and SCHED 3A communicator This transmitter consists of six channels Two class A A1 and A2 one End of line resistor supervisory S1 and three closed loop supervisory S2 S3 and There is also one programmable output an AC fail a low battery detector The SG DV4420 can transmit to ten codes to the MLR2 receiver at the central It includes the 12V power supply battery charger the 24V power supply for the F1 F2 modem The power is obtained from a 12V battery EEPROM programming is done easily and quickly using the SUR GARD SG DVT1 SCHED 3A tester It only necessary to enter the account ID and options Other data such as the function bytes delays can be modified to meet different operating conditions MODE mounted in Multi 2XF metal cabinet with 115 to 14VAC transformer meeting ULC as a Stand Alone fire sprinkler transmitter OVERVIEW SG DV4420 is intended for use as a fire transmitter for connection to a sprinkler riser or to output relay of an existing fire alarm control panel This unit not include U L C requirements for a complete fire alarm system such as multi zone with alarm trouble indicators Class A zones ELR supervisory zon Normally closed Supervisory zones Power supply Vaux 12V at 250mA w 15 Ah 24V at 50mA output to power modem Operation controlled through program options Programmable output PGM 1 Switched to with current limiting resistor SUPPLY SG DV4420 has a built in 12VDC to 24VDC converter power supply to operate the F1F2 modem a one Amp 12VDC power supply and charger The auxiliary power supply can be used power smoke detectors and other devices requiring 800mA 12VDC is available from the AUX and GND negative terminals It also includes failure and low battery detector NON VOLATILE MEMORY EEPROM non volatile memory is used to store the data needed for each installation such the ID code the all call response etc OUTPUT serial output to the F1F2 subset modem is on a 6 modular jack A 6 foot modular cable is supplied the unit SPECIFICATIONS LOOP RESISTANCE PER CONDUCTOR loops A2 100 ohms BATTERY DETECTION the battery voltage falls below about 11V this circuit will be activated and the programmed battery code will be transmitted to the central station loops 2700 ohms ELR up to250 ohms 500 ohms part number 27C256 current draw 260mA with Required charged and F1 F2 subset Amp hr minimum to 15 hr rechargeable gel cell sealed lead acid battery in panel 16,5 Vac 37VA Class 2 Transformer 29cm W x 35.5cm H x 12.5cm D 3.7Kg DOG CIRCUIT Watch Dog reset circuit continously monitors the of the microprocessor If a malfunction occurs to lightning or other unusual event this circuit will the microprocessor in less than 10 seconds BATTERY DISCONNECT CIRCUIT NOT BOARD ONLY VERSION the battery voltage fall below about 10.5V the system electrically disconnect the battery to prevent it from deep discharged The system remains disconnected the battery until the AC power comes back ON or the dead battery is replaced with a sufficiently battery A FIRE ZONES Fire zones A1 and A2 are supervised normally alarm initiating contacts Class A circuits designed accept sprinkler switches manual pull stations building alarm control panel alarm output relay contacts or four wire smoke detectors A1 has an activation delay On alarm loop shorted once the activation delay has expired alarm is transmitted to the central station The delay is programmed at location 21 If the fire A1 returns to normal or swings before the activation has expired there will be no transmitted alarm activation delay feature makes it possible to use type waterflow switches without false alarms from surges There is also a restore delay time at location 22 to avoid nuisance repeat SPECIAL FEATURES OF PROGRAMMING system ID code and other programmable parameters be downloaded into the module EEPROM by using SG DVT1 Tester with program version 5.0 or later an access terminal The SG DVT1 is plugged into SCHED 3A line modular socket OF TRANSMISSION is possible to select for each zone no transmission transmission only or alarm and restore transmissions AND RESTORE DELAYS loop A1 Low Battery detect and the AC fail detect programmable activation and restore delays to false alarms and nuisance troubles OUTPUT FUNCTION ON PROG OUTPUT 1 PGM OUT can be activated by alarm on A1 only only or both It has a 17 minute autoreset TROUBLE WARNING the transmission line were cut the unit would give a seconds pulse to the PGM OUT output after a delay of 60 sec or 120 sec A1 A2 Class A Fire Sprinkler circuits must have closed loop between its two terminals and another its two terminals Opening one of those loops cause a fire trouble and shorting across the loops will a fire alarm INPUTS are four supervisory circuits provided which may used to monitor other parameters such as main and pressure The first supervisory loop S1 is End of Line Resistor loop The supervisory loop S1 have a 2.7K end of line resistor This is not a Class fire circuit since either a short or an open circuit causes the same supervisory signal The loops S2 S3 and S4 are used for normally switch contacts OUTPUT PGM OUT SG DV4420 has one programmable output switching negative with a 150 ohm 1W current limiting resistor sensitive relay with a coil resistance of 700 ohms or a buzzer a LED or compatible DC operated may be connected between the AUX positive and the PGM OUT switched negative terminal the main board Typical uses are control relay alarm A1 and or A2 indicator line trouble warning indicator Back call received confirmation operation of the Programmable Output depends which option is selected in the programming table the Programming Guide for a list of programmable possibilities programmed at Location 27 The output can also be controlled remotely the receiver JUMPERS program selection jumper must be left open BOARD LED INDICATORS SEE FIG 1 Flashes once every 10 seconds to show is functioning normally Any other flashing period a malfunction in the unit LINE LINE when unit transmits data following incoming data FIRE TROUBLE ON when zone A1 in alarm in trouble FIRE TROUBLE ON when zone A2 in alarm in trouble TESTING SG DV4420 contains factory default programming additional programming required is done through SG DVT1 tester For many applications all that will required is to enter the ID number If you need help to your Sur Gard distributor the SG DV4420 using the SG DVT1 Tester program version 5.0 or later as an access terminal SG DVT1 is plugged into the SCHED 3A line modular The program select jumper J2 should be removed the SG DV4420 circuit board a 2.7K end of line resistor between the S1 input and the GND terminal Connect a jumper on each closed supervisory zone S2 S3 and S4 input 2 loops to the A1 and A2 Sprinkler fire class A terminals out to in and out to in To test your Fire system including the communicator it is necessary to connect the unit to a test set such the SG DVT1 see system testing procedure a 14Vac 20VA transformer to the AC terminal