Troubleshooting TC3000 fire alarm and fire linkage control system
Posted: Thu Mar 24, 2022 12:03 pm
Analysis and solution of typical problems in TC3000 series automatic fire alarm and linkage control system
Example 1: when the computer is used to transmit linkage programming to the controller, the controller will report system failure and loop component failure, which will affect the loop component.
Solution: Before the introduction of linkage programming to temporarily remove the route, to be transferred after the end of the reconnect.
Example 2: Switching the controller on and off frequently sometimes causes the loop component to fail.
Solution: Each shutdown and boot time interval should be more than 1 minute.
Example 3: Each control panel in the system is faulty
Solution: shut down check the internal bus, check whether wiring is correct, wiring is reliable. If TVS1 (12V transient diode) short-circuits on the motherboard. Replace this component and the system returns to normal.
Example 4: System reports "loop fault"
Solution: Open the machine to check the background current value of the loop is greater than 24mA. Remove the loop and measure the background current value of the loop to see if it is normal (9-11mA). If normal, there is a problem with the external connection. Shutdown measurement of resistance between the circuit is about 5K ω (circuit full load), with a shaking meter to measure whether the insulation resistance between the circuit and the earth is greater than 20M(before measuring the two circuit together, otherwise it will damage the device on the bus). Check the line according to the inspection situation. If the circuit still fails after removing the outside line, there is a problem with the return circuit sub-board, and the return circuit sub-board should be replaced.
Example 5: The GND cable of the controller with CRT fire display system connects to the ground.
Solution: Disconnect the power grounding cable of CRT computer and monitor, or install RS232 serial isolator between serial cables.
Example 6: a loop without a substation board reports a loop fault.
Solution: This situation occurs when the actual number of loop subboards in the system is smaller than that specified in the program. Is a normal state, but in the actual application (more system debugging) sometimes need to take off the circuit sub-station board, then can be set by the last three digits of the pull code switch on the circuit board (TC3000S can not), according to the binary code can be set. Let's say there are actually several loops. If all loops are set to 0, all eight loops are valid.
Description:
For specific operation methods and connection methods, please refer to TC3000 Series Automatic Fire Alarm and Linkage Control System Product Design Manual and JB-TB (G) -TC3000 Type Fire Alarm Controller (Linkage) Operating Manual.
Example 7: System operation is unstable, often false alarm or failure
Solution: enter "loop browsing capabilities," back to the way of every equipment between 5-7 ma, current value is stable if the back to the device current value change is not very stable, up and down on the road is proved that this circuit external bus problems, perimeter should be take off, with shaking table tests whether the external normal (methods such as case 4). If it is normal, check whether the circuit bus and other strong electric lines are in a cable trough during wiring (because the signal voltage on the bus is low, the strong electric AC high voltage will interfere with the bus signal, causing the signal instability). According to the fire protection installation regulations, the lines of the fire protection system should be routed separately from other lines. Therefore, locate interference sources and remove them by shielding them or routing them again.
Example 8: The current value of some equipment was found outside the normal range during loop browsing
Solution: the failure phenomenon is the same bus device address more heavy number, in case of multiple device address with duplicate, loop, the address of the devices on the current value will be higher, will happen at the same time the corresponding number of the equipment on its address no current value, that is important to distinguish between equipment alarm with double booked. Accordingly, the heavy number setting can be re-addressed with an encoder.
Example 1: when the computer is used to transmit linkage programming to the controller, the controller will report system failure and loop component failure, which will affect the loop component.
Solution: Before the introduction of linkage programming to temporarily remove the route, to be transferred after the end of the reconnect.
Example 2: Switching the controller on and off frequently sometimes causes the loop component to fail.
Solution: Each shutdown and boot time interval should be more than 1 minute.
Example 3: Each control panel in the system is faulty
Solution: shut down check the internal bus, check whether wiring is correct, wiring is reliable. If TVS1 (12V transient diode) short-circuits on the motherboard. Replace this component and the system returns to normal.
Example 4: System reports "loop fault"
Solution: Open the machine to check the background current value of the loop is greater than 24mA. Remove the loop and measure the background current value of the loop to see if it is normal (9-11mA). If normal, there is a problem with the external connection. Shutdown measurement of resistance between the circuit is about 5K ω (circuit full load), with a shaking meter to measure whether the insulation resistance between the circuit and the earth is greater than 20M(before measuring the two circuit together, otherwise it will damage the device on the bus). Check the line according to the inspection situation. If the circuit still fails after removing the outside line, there is a problem with the return circuit sub-board, and the return circuit sub-board should be replaced.
Example 5: The GND cable of the controller with CRT fire display system connects to the ground.
Solution: Disconnect the power grounding cable of CRT computer and monitor, or install RS232 serial isolator between serial cables.
Example 6: a loop without a substation board reports a loop fault.
Solution: This situation occurs when the actual number of loop subboards in the system is smaller than that specified in the program. Is a normal state, but in the actual application (more system debugging) sometimes need to take off the circuit sub-station board, then can be set by the last three digits of the pull code switch on the circuit board (TC3000S can not), according to the binary code can be set. Let's say there are actually several loops. If all loops are set to 0, all eight loops are valid.
Description:
For specific operation methods and connection methods, please refer to TC3000 Series Automatic Fire Alarm and Linkage Control System Product Design Manual and JB-TB (G) -TC3000 Type Fire Alarm Controller (Linkage) Operating Manual.
Example 7: System operation is unstable, often false alarm or failure
Solution: enter "loop browsing capabilities," back to the way of every equipment between 5-7 ma, current value is stable if the back to the device current value change is not very stable, up and down on the road is proved that this circuit external bus problems, perimeter should be take off, with shaking table tests whether the external normal (methods such as case 4). If it is normal, check whether the circuit bus and other strong electric lines are in a cable trough during wiring (because the signal voltage on the bus is low, the strong electric AC high voltage will interfere with the bus signal, causing the signal instability). According to the fire protection installation regulations, the lines of the fire protection system should be routed separately from other lines. Therefore, locate interference sources and remove them by shielding them or routing them again.
Example 8: The current value of some equipment was found outside the normal range during loop browsing
Solution: the failure phenomenon is the same bus device address more heavy number, in case of multiple device address with duplicate, loop, the address of the devices on the current value will be higher, will happen at the same time the corresponding number of the equipment on its address no current value, that is important to distinguish between equipment alarm with double booked. Accordingly, the heavy number setting can be re-addressed with an encoder.