ABB TMM-700 Trip Monitor

ABB TMM-700 Trip Monitor

Basic Information

Series：ABB Bailey Infi 90.

Function Overview: It is mainly used to monitor and protect the equipment and system in industrial process, when abnormal situation is detected, it can trigger the tripping action in time to prevent the equipment from being damaged or to protect the safety of personnel. For example, in the power system, it can monitor the current, voltage and other parameters, once there is an overload, short-circuit and other faults, it will quickly send out a trip signal to cut off the circuit, to protect electrical equipment from damage.

Technical Parameters

Input Signal Type: Usually it can accept various types of input signals, such as analogue input signals, including 4-20mA current signals, 0-10V voltage signals, etc., in order to connect with various sensors or transmitters to obtain the measured values of different physical quantities; it may also support digital input signals, which are used to receive status signals, alarm signals, etc., from other equipments or systems.

Measurement accuracy: It has high measurement accuracy to ensure that it can accurately monitor the small changes of the measured parameters. Generally speaking, the current measurement accuracy can reach ±0.5% or higher, and the voltage measurement accuracy can also reach a similar level, so as to provide a reliable basis for tripping judgement.

Response time: The response time is fast, and it can detect the fault and trigger the tripping action in a short time. Usually the response time in milliseconds or even faster, which is crucial for the rapid protection of equipment and systems, can effectively reduce the degree of damage to the equipment fault.

Output Signal: With a variety of output signal interfaces, common relay output, which can be used to directly control the tripping operation of circuit breakers and other equipment; there may also be digital communication interfaces, such as RS-485, etc., in order to communicate with the host computer or other control equipment for data communication, and to transmit the monitored information and tripping status to the relevant equipment, to achieve remote monitoring and management.

Application Fields

Power system: Widely used in power plants, substations and other places to monitor the operation status of generators, transformers, transmission lines and other equipment. For example, in generator protection, TMM-700 can monitor stator current, rotor current, voltage and other parameters, and when there are internal faults, overloads, undervoltage and other abnormalities, it can trip the generator in time to protect the generator from damage and ensure the stable operation of the power system.

Industrial automation production line: In various industrial production processes, such as chemical, metallurgy, machinery manufacturing and other industries, automation production line, used to monitor the working status of motors, inverters, drives and other equipment. Once the equipment malfunction or abnormal operation, such as motor overload, short circuit, etc., TMM-700 can quickly trip to avoid the expansion of the fault, reduce equipment maintenance costs and production downtime.

Transportation: It is also used in rail transit and electric vehicle charging stations. For example, in the traction power supply system of rail transit, TMM-700 can be used to monitor the contact network current, voltage and other parameters to ensure the safe and reliable operation of the power supply system; in electric vehicle charging stations, it can be used to monitor the current and voltage of charging equipment to prevent overcharging, overcurrent and other conditions from causing damage to electric vehicles and charging equipment.

Maintenance

Regular Inspection: Regularly check the appearance of TMM-700 Trip Monitor for signs of damage, looseness or corrosion. At the same time, check whether the connecting cables are firm and the plug and socket are in good contact to ensure the reliability of signal transmission. If any problems are found, the damaged parts should be dealt with or replaced in time.

Calibration and verification: To ensure the accuracy of the measurement and the trip function, the module needs to be calibrated and verified periodically. The calibration process should be carried out in accordance with the relevant ABB technical specifications and operating manuals, using professional calibration equipment and tools to calibrate and verify the input and output signals. It is generally recommended to carry out calibration every year or every two years, the specific period can be determined according to the use of the equipment environment and frequency of operation and other factors.

Software upgrading: ABB may upgrade the control software of TMM-700 with the continuous development of technology and changes in application requirements. Users should pay attention to the official information of ABB, download and install the latest software version in time to ensure that the module has the latest functions and performance, and at the same time improve the safety and stability of the system.

Troubleshooting: When the TMM-700 has a fault, you can first get the fault information through the indicator light or communication interface on the module, and make a preliminary judgement on the cause of the fault. Common faults include abnormal input and output signals, inaccurate tripping action, communication faults and so on. For different fault phenomena, adopt corresponding troubleshooting and processing methods, such as checking the signal source, replacing the faulty module, checking the communication line, etc. If you can not solve the problem by yourself, you should contact ABB's technical support staff or professional maintenance personnel for maintenance.