Service explanation JA-110T
BUS short circuit isolation module
This product is part of the JABLOTRON JA-100 alarm system. It serves for better protection of indoor bus cable lines. It separates the outdoor portion of the BUS pipe from the pipe in the house. If the outdoor section is damaged (e.g. a burglar short-circuits the cable), the indoor branch of the system remains functional.
The use of the isolator is mainly recommended in cases where the bus cable is routed outside the room to be monitored. With reference to the insulator, separate floors (or wings) in the house can also be separated.
The insulator can also be used to extend the cable, improving signal transmission with a long cable. The module is intended for installation by a trained technician with a valid Jablotron certificate.
Installation
The module can be installed in a JA-190PL (Jablotron) mounting box, in the control panel cabinet and/or in a standard el. installation box. Always the best inside the area to be monitored.
Any number of isolators can be installed in the system. However, it can only be used for the branches of the internal BUS pipe. Insulators may not be connected one after the other.
Before connecting the BUS, the system must be disconnected from the power supply.
Figure: 1 – terminals of the external branch BUS (O); 2 – indication of fault of the external BUS branch; 3 – terminals of the internal BUS branch (I from the central unit)
After connecting cables and switching on the system, the isolator is functional. It does not need to be classified in the system (it does not take up a position).
Function
The isolator interrupts the output bus line (O) for 5 sec in the following cases:
1. The current to be drawn from the isolator exceeds 250mA (terminals +U and GND on the OUTSIDE side)
2. The voltage on the BUS supply drops below 9 V (terminals +U and GND on the INSIDE side)
If the high drop or the dropped voltage is permanent, the output bus (O) remains permanently interrupted, possibly the voltage can operate in cycles of 5 sec. If the output bus is interrupted, the yellow signal light (2) will burn permanently.
When a wired peripheral has to be connected at a great distance and the signal quality improvement module is used, it must be ensured that there is sufficient voltage on the bus supply (by using a properly dimensioned cable), so that if the input voltage drops below 9 V, the outgoing side (O) of the bus is not interrupted.
Image: Example of installation in a JA-190PL box.
Technical parameters
Power supply from the central BUS 12 V (9…15 V)
Power consumption in standby (rest) 5 mA
Power consumption for choice of cable 5 mA
Permissible load of external BUS line max. 250 mA
Classification grade 2
according to EN 50131-1, EN 50131-3,
Environment according to EN 50131-1 II. inside, general
Working temperature range -10 to + 40 °C
Furthermore complies with EN 50130-4, EN 55022
Image: (I) indoor (protected) space; (O) outdoor (unprotected) area;
(1) separation from the outer branch of the BUS; (2) extension of the BUS longer than 500 m (see Function)
The use of the isolator is mainly recommended in cases where the bus cable is routed outside the room to be monitored. With reference to the insulator, separate floors (or wings) in the house can also be separated.
The insulator can also be used to extend the cable, improving signal transmission with a long cable. The module is intended for installation by a trained technician with a valid Jablotron certificate.
Installation
The module can be installed in a JA-190PL (Jablotron) mounting box, in the control panel cabinet and/or in a standard el. installation box. Always the best inside the area to be monitored.
Any number of isolators can be installed in the system. However, it can only be used for the branches of the internal BUS pipe. Insulators may not be connected one after the other.
Before connecting the BUS, the system must be disconnected from the power supply.
Figure: 1 – terminals of the external branch BUS (O); 2 – indication of fault of the external BUS branch; 3 – terminals of the internal BUS branch (I from the central unit)
After connecting cables and switching on the system, the isolator is functional. It does not need to be classified in the system (it does not take up a position).
Function
The isolator interrupts the output bus line (O) for 5 sec in the following cases:
1. The current to be drawn from the isolator exceeds 250mA (terminals +U and GND on the OUTSIDE side)
2. The voltage on the BUS supply drops below 9 V (terminals +U and GND on the INSIDE side)
If the high drop or the dropped voltage is permanent, the output bus (O) remains permanently interrupted, possibly the voltage can operate in cycles of 5 sec. If the output bus is interrupted, the yellow signal light (2) will burn permanently.
When a wired peripheral has to be connected at a great distance and the signal quality improvement module is used, it must be ensured that there is sufficient voltage on the bus supply (by using a properly dimensioned cable), so that if the input voltage drops below 9 V, the outgoing side (O) of the bus is not interrupted.
Image: Example of installation in a JA-190PL box.
Technical parameters
Power supply from the central BUS 12 V (9…15 V)
Power consumption in standby (rest) 5 mA
Power consumption for choice of cable 5 mA
Permissible load of external BUS line max. 250 mA
Classification grade 2
according to EN 50131-1, EN 50131-3,
Environment according to EN 50131-1 II. inside, general
Working temperature range -10 to + 40 °C
Furthermore complies with EN 50130-4, EN 55022
Image: (I) indoor (protected) space; (O) outdoor (unprotected) area;
(1) separation from the outer branch of the BUS; (2) extension of the BUS longer than 500 m (see Function)