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Dual Power Supply Control Cabinet - Automatic Transfer Switch
Ats Cabinet - Automatic Transfer Switch
0102030405
Y-702 Automatic Transfer Switch Controller - China Suppliers & Factory - AC220V, RS485, Modbus RTU, Ethernet Options
LMS1-LA Series Manual
LMS1-LA as our ingenuity research and development of a new generation of dual power automatic transfer switch, in the performance and technology to achieve a major breakthrough. The product provides 63A, 125A, 250A, 400A, 630A and other rated current specifications, whether it is the continuous operation of massive servers in data centers, or the uninterrupted power supply of life support equipment in hospital ICU wards, the stable operation of elevator and fire fighting system in high-rise buildings can fully meet the power demand in different scenarios.
Its switching speed can be called industry-leading, switching time only 10ms-50ms, with millisecond response speed to complete power conversion. In the data center, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time in the face of sudden power failure, avoiding data loss and system collapse caused by momentary power failure; in the hospital environment, the LMS1-LA automatic transfer switch can switch to the standby power supply in a very short period of time, millisecond-level power switching can guarantee the stable operation of precision instruments and first-aid equipment in operating rooms, and escort the safety of patients. When applied to high-rise buildings, fast power changeover ensures smooth parking of elevators, normal operation of fire fighting systems and improved building Factor of safety.
The transfer switch is composed of a high performance excitation contactor and an intelligent controller. When working, the electromagnetic coil produces a strong and stable attraction to drive the switching action to ensure the instant completion of power switching. This feature not only effectively guarantees the rapid switching of the power supply when the equipment is powered off, but also realizes the seamless connection of the power supply, which provides a reliable and solid power guarantee for the equipment with strict requirements for power continuity.
The Dual Power Automatic Transfer Switch Controller is a dual power supply system for the design of intelligent control equipment, designed to ensure that in the complex and changeable power environment, load can be sustained, stable and reliable power supply. Through the comprehensive monitoring of the two power supplies, it can accurately judge the status of the power supply, and quickly switch the power supply according to the preset logic, which effectively solves the problem of power interruption caused by power failure, widely used in hospitals, data centers, financial institutions, industrial production and other areas of high demand for power supply continuity.
Functional Characteristics
Precise Power Supply Monitoring
Voltage Monitoring: Real-time, accurate measurement of two power supply voltage values; can set over-voltage and under-voltage thresholds. For example, for 220V mains, can accurately identify voltages higher than 242V (overvoltage) or lower than 198V (undervoltage).
Frequency Monitoring: Strictly tracks the frequency of the power supply to ensure stability within 50 Hz ± 0.5 Hz, ensuring normal operation of frequency-sensitive equipment.
Phase Monitoring: In three-phase power supply systems, accurately monitors the 120° phase difference between phases, and timely detects anomalies such as excessive phase deviation or wrong phase order.
Intelligent Switching Control
Automatic Switching: When over-voltage, under-voltage, phase loss, or abnormal frequency faults are detected, the controller automatically switches the load to the standby power supply within a very short time (typically tens of milliseconds to seconds) to ensure uninterrupted power supply.
Manual Switching: Equipped with manual switching function; operators can switch the power supply flexibly via the controller panel button or remote command.
Flexible Switching Logic: Customizable priority for main and standby power supply. By default, mains serves as the main supply and generators as backup. Switching delay (0.5–5 seconds, adjustable) avoids false switching caused by instantaneous power fluctuations.
Alarm & Communication
Multiple Alarm Prompts: When power supply is abnormal or the system fails, the controller immediately sends sound and light alarm signals. Alarm information is displayed intuitively, including specific fault types such as over-voltage, under-voltage, phase loss, and abnormal frequency.
Convenient Communication Function: Some models are equipped with RS485, Ethernet and other communication interfaces for easy connection with upper computer monitoring systems, enabling remote monitoring, remote operation and remote data transmission. Staff can know the power supply status and controller working condition in real time and issue remote control instructions.
Main Technical Parameters
Products Model Number |
Y-701 |
Y-702 |
Installation Method |
Fission Type |
|
Display Mode |
Indicator Light |
LED |
Rated Duty |
Uninterrupted Duty |
|
Self-input and Self Restore |
■ |
■ |
Normal Port and Standby Port Share to Each Other |
■ |
■ |
Generator Auto-start Function |
■ |
■ |
Normal Power Detect |
■ |
■ |
Standby Power Detect |
Four-phase lacking phase detection, three-phase over-voltage/under-voltage detection |
|
Passive Fire Protection Input |
Four-phase lacking phase detection, three-phase over-voltage/under-voltage detection |
|
(DC9-36V) Active Fire Protection Input |
■ |
■ |
Active Fire Control Input |
■ |
■ |
Voltage Real-time Display |
■ |
■ |
Normal Power and Standby Power Indication |
□ |
■ |
Normal Power and Standby Power |
■ |
■ |
Over-voltage/Under-voltage Adjustable |
■ |
■ (F/F1) |
Generator Rev. Stop Time Adjustable |
■ |
■ |
Programmable Output |
□ |
■ |
RS485 Communicating Function |
□ |
■ |
Product Features
Y-701/702 Function of Each Terminal
R- |
R+ |
GND |
R1 |
485B (-) |
485A (+) |
EGND |
□ R- & R+: DC9V–36V active fire control input enabled
□ GND & R1: Short circuit, passive fire control unit enabled
□ 485A & 485B: RS485 communication terminal; EGND — Frame Ground
Communication Protocol Parameters:
Local Host: 1 (1–32, can be modified) | Baud Rate: 9600 bps
Data Bit: 8 | Parity Bit: None | Stop Bit: 1
- M3, M4: Standby power passive closing auxiliary output; outputting time depends on ATS model — about 3 seconds within magnet exciting coil; electric type ATS can be more than 10 seconds.
- L2: Standby power active closing feedback input, only limited to phase A/B/C.
- A2: Standby power phase A output, feedback to the closing standby power.
- A2, B2, C2, N2: Standby power three-phase & four-wire input.
- T1, T2: All-off signal output; can be active or passive depending on ATS model. When equipped with PC class three-section ATS, it is 220VAC active output; passive when equipped with seclusion type ATS.
- F2, F1, F: In Y-701 controller, F1 and F are starting generator signal output; in Y-702 controller, F1 and F are programmable output.
- A1, B1, C1, N1: Normal power three-phase & four-wire input.
- A1: Phase A normal output, feedback to closing normal power.
- L1: Normal power active closing feedback input, only limited to phase A/B/C.
- M1, M2: Normal power passive closing auxiliary output; outputting time refers to M3 & M4.
Product Dimensions
Frequently Asked Questions
What is the main purpose of the Dual Power Automatic Transfer Switch Controller?
The Dual Power Automatic Transfer Switch Controller is designed to ensure continuous, stable, and reliable power supply to loads in complex power environments. It monitors two power sources simultaneously and automatically switches between them when a fault is detected, preventing power interruption in critical facilities such as hospitals, data centers, financial institutions, and industrial production sites.
What is the difference between the Y-701 and Y-702 models?
The key differences are in their display mode and advanced features. The Y-701 uses indicator lights for display, while the Y-702 uses an LED display. Additionally, the Y-702 supports programmable output and RS485 communication function, whereas the Y-701 does not. Both models share the same installation method (fission type) and core switching functions.
How quickly does the controller switch between power supplies during a fault?
When a fault such as over-voltage, under-voltage, phase loss, or abnormal frequency is detected on the main power supply, the controller automatically switches the load to the standby power supply within a very short time — typically from tens of milliseconds up to a few seconds — ensuring minimal interruption to the load.
Can the switching delay time be adjusted to avoid false switching?
Yes. The controller is equipped with a switching delay function specifically designed to prevent false switching caused by instantaneous power fluctuations. The delay time can be flexibly adjusted within a range of 0.5 to 5 seconds, allowing users to configure the system according to their specific application requirements.
Does the controller support remote monitoring and control?
Yes. Certain models (notably the Y-702) are equipped with RS485 and Ethernet communication interfaces, enabling seamless integration with upper-level monitoring systems. Through a monitoring center, staff can view real-time power supply status and controller working conditions, as well as issue remote control instructions, significantly improving management efficiency.
What types of faults can the controller detect and alarm for?
The controller can detect and alarm for a wide range of power supply faults, including over-voltage, under-voltage, phase loss (lacking phase), abnormal frequency, and phase order errors. When any of these faults occur, the controller immediately triggers both audible and visual alarm signals, with fault type information displayed intuitively to help staff quickly locate and resolve the issue.