ABB PHBRLY20000000 RLY200 Relay Block

ABB PHBRLY20000000 RLY200 Relay Block

Basic Information

Product Model: PHBRLY20000000.

Product name: RLY200 Relay Block, which is a relay module produced by ABB.

Functional features

Relay function

Signal conversion and isolation: this relay block can realise signal conversion and isolation functions. For example, it can convert input weak signals (e.g. digital signals from PLC) into strong signals for controlling the on/off of high-power devices (e.g. motors, heaters, etc.). At the same time, through the electromagnetic isolation of the relay, it effectively isolates the input and output circuits, prevents electrical interference from spreading between different circuits, and improves the anti-interference capability of the system.

Multiple Relay Integration: Multiple relay units are usually integrated, and each relay unit can independently control a channel. This makes it possible to control multiple devices at the same time or to implement complex logic controls. For example, in an automated production line, it is possible to control the starting and stopping of equipment at different stations, such as conveyor belt motors, power supply for processing equipment, etc., through multiple relays respectively.

Electrical Parameter Characteristics

Rated Voltage and Current: Have clearly defined parameters for rated voltage and current. For example, the input side may be suitable for low-voltage signals, such as 5V, 12V or 24V DC, while the output side can withstand higher voltages and currents, such as being able to control a 220V AC, 10A load circuit. These parameters determine the extent to which it can safely and effectively control a wide range of electrical equipment.

Action time and release time: The action time and release time of a relay are important performance indicators. The action time is the time from the energisation of the relay coil to the closure of the contacts, and the release time is the time from the de-energisation of the coil to the opening of the contacts.The action and release times of the RLY200 relay block are usually short, enabling a quick response to the control signals and the timely control of the equipment. For example, their action time may be between a few milliseconds to tens of milliseconds, which is important for some industrial control scenarios that require fast response (e.g. emergency braking systems).

Protection Functions

Overload protection: The built-in overload protection mechanism can automatically cut off the circuit when the output current exceeds the rated current, protecting the relay and the controlled equipment from damage. For example, in the process of controlling motor start-up, if the motor is blocked or other faults lead to excessive current, the relay will cut off the circuit in time to avoid damage to the motor and relay due to prolonged overload.

Reverse Voltage Protection (possible): Some models may have reverse voltage protection, which is used to prevent damage to other circuit components caused by the reverse electromotive force generated by the inductive effect when the relay coil is de-energised. This protection is especially important in some circuits containing inductive loads such as solenoid valves.

Status Indication Function

Indicator display: An indicator is provided to show the operating status of each relay. For example, when the relay coil is energised and the contacts are closed, the corresponding indicator light is on; when the coil is de-energised and the contacts are open, the indicator light is off. This intuitive status display makes it easy for users to quickly determine the working status of the relays in the field, which is convenient for troubleshooting and system maintenance.

Physical characteristics and interfaces

Interface types: A variety of interfaces are available, including input interfaces for connecting control signals (e.g., pin-type interfaces for receiving digital signals from the controller) and output interfaces for connecting loads (e.g., screw-terminal interfaces for conveniently connecting wires to control electrical equipment). These interfaces are designed to comply with industrial standards for easy plugging, unplugging and connection, and have good electrical properties to ensure stable connections over long periods of time.

Compact physical design: The external dimensions are generally designed to be compact and easy to install in limited spaces such as control cabinets or equipment racks. The housing is usually made of metal or high-strength engineering plastics with good impact resistance and heat dissipation. In terms of mounting, it may support rail mounting or screw mounting, which is convenient for users to choose according to the actual installation environment and requirements.

Internal Circuit Layout (possible): The internal circuit layout is reasonable, using high-quality circuit boards and electronic components. The circuit boards may be treated with moisture-proof, mould-proof and corrosion-proof to meet the requirements of the industrial environment. The selection and layout of electronic components take into account electromagnetic compatibility and heat dissipation requirements to ensure stable performance of the relay block during long-term operation.

Application Fields

Industrial automation control system: It is widely used in the automation control system of chemical, petroleum, natural gas, electric power, metallurgy, pharmaceutical and other industries. For example, in the chemical production process, it is used to control the on and off of various chemical process equipments (such as pumps, valves, etc.) to achieve precise control and real-time monitoring of the chemical reaction process.

Power system control: In power system facilities such as substations, distribution rooms, etc., it is used to control the operation of circuit breakers, disconnect switches and other equipment to realise the protection and control functions of the power system. For example, in the event of a power system failure, the relay block is used to quickly cut off the faulty circuit to protect power equipment and personnel safety.

Intelligent Building and Facility Management: In intelligent buildings, it is used to control the starting and stopping of equipment such as lighting system, air-conditioning system and lift system. For example, according to the time, light intensity and other conditions, through the relay block to control the switch of lighting fixtures, intelligent management of buildings and energy-saving control.