GB17429-2011 "Fire Display Disk" standard stipulates that under conditions not exceeding 500lx ambient light, within the 22.5-degree viewing angle range directly in front, the characters or text displayed on the monitor should be clearly readable at 0.8 meters.
J-EI8050 fire display disk is a two-wire display disk, and its power consumption is far lower than that of the J-EI6050 display disk (a J-EI6050 is equivalent to 60 J-EI8050 in the monitoring state). Therefore, when the alarm is automatically lit, the default backlight of the LCD is darker than that of the J-EI6050, but it still meets the standard requirements, and the backlight will be automatically enhanced when manually operating the buttons.
display disk works normally, but the controller cannot log in, the display disk cannot alarm problem
J-EI8050/8051 display disk uses polarity two-wire wiring. In the project, if the 24V power cord of other four-wire components is incorrectly connected to the display disk, although the display disk can work normally, it cannot communicate with the fire alarm controller , so the controller cannot log in, the display disk cannot alarm, etc.
two-wire display disk number and wiring requirements?
system bus should select RVS copper twisted pair wire with a cross-sectional area of ≥1.5mm2 and lay it through the pipe. The insulation resistance of the line should be greater than 20M, and the bus length should be limited to within 1000m. In a single circuit, the display disk, module, sound and light are connected at the same time, and the total of the three components are three components. The number should not exceed 45, the number of display disks should not exceed 20, and the display disk cannot be programmed as a duplexer at the same time. If in a single circuit, there are only display disks and detectors, the number of display disks should not exceed 32, and the display disks should not be programmed as a duplexer at the same time. If the sum of the number of fire display disks and sound and light in a single circuit is less than 20, the bus length can be extended to 1500 meters. If 1.0mm2 copper twisted pair cable is used, the number of display disks should be 3/5 of the original number.
J-EI8051 display disk display mode How to set?
J-EI8051 display disk has room number mode that only displays fire alarm information, loop address mode that only displays fire alarm information, room number and loop address mode that displays fire alarm information, default settings when J-EI8051 display disk leaves the factory. Set to display only the fire alarm information loop address mode. Users can modify the settings as needed. Press the self-test and up keys at the same time, press the setting key 3 times, and then press the confirmation key to enter the setting display mode state. Press the up key to only display the fire alarm information room number, press the down key to display the loop address of the fire alarm information, press the setting key to display the room number and return address of the fire alarm information loop, press the confirmation key to complete the setting, and the setting has a storage function, that is, it will not be lost after resetting or turning on and off.
can the two-wire display disk be programmed as a duplexer?
When the two-wire display disk is connected to the module and the sound and light in the same bus long-line circuit, the display disk cannot be uniformly programmed as a duplexer. Otherwise, in the fire alarm state, after the module, the sound and light, and the display disk operate at the same time, the bus current is too large, and the voltage at the end of the bus will be pulled down, resulting in the display disk power-down and reset without output. Are the password and self-test of
J-EI8050/8051 the same as EI6050/6051?
J-EI8050 display disk password and self-test operation are exactly the same as J-EI6050 display disk. The password is input and the self-test operation is all ▼▲▼▲. The self-test operation is to enter the settings menu and select self-test. The self-test operation of the J-EI8051 display disk is exactly the same as that of the J-EI6051 display disk. Press the ▲▼ key at the same time, press the silence key 3 times, and then press the self-test button.
Two-wire display disk is protected by misconnection of strong power?
Two-wire display disk (J-EI8050/8051) has strong power AC220V misconnection protection, and does not have AC380V misconnection protection.
J-El6051 Fire Display Panel cannot be directly self-inspected?
GB17429-2011 "Fire Display Panel" has clear regulations on the operation level. Self-inspection belongs to Level II operation and "the operation number or key should be used."
Set the setting location of the fire display disk?
GB50116-2013 Fire regulations:
6.4.1 Each alarm area should be equipped with an area monitor (fire display disk); hotels, hotels and other places should be equipped with an area monitor in each alarm area. When an alarm area includes multiple floors, it is advisable to set up an area display that only displays the floor on each floor.
What is the reason for the fire display disk burning?
fire display disk working voltage is 24V, and it can still work normally when floating to 36V. Combined with the problems that arise in previous projects, it is basically caused by strong electricity.
Why can't J-EI6051 display information such as faults?
According to the latest national standard requirements, for fire display disks, if they can display fire alarms, faults, supervision and other historical records, they need to be displayed according to priority level. It is difficult to deal with digital tube display disks, so J-EI6051 only displays fire alarm information.
fire display disk has polarity?
J-EI6051, J-EI6050 and J-EIN50 three display disk buses and 24V are not polarized;
J-EI8050 and J-EI8051 are two-wire products, do not require DC 24V power supply, and have strong power input protection function.
Source Yiai Firefighting
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