L7 Programmable Low Voltage Motor Protection Measurement and Control Device

The L7 programmable low-voltage motor protection and measurement device is an intelligent motor protection and measurement device developed based on ARM microprocessor technology. Integrating protection, measurement, control, and communication, it has a high cost performance ratio and stable and reliable performance. Mainly providing comprehensive current type protection control for low-voltage motors in various application scenarios, improving the utilization rate of load equipment such as motors, and extending their service life.
The appearance design is novel and unique, the workmanship is exquisite and beautiful, and the performance is safe and reliable. Equipping the switchgear with a split layout will simplify the panel structure design of the switchgear.
Separated installation, the display box can be installed on the panel, and the body can be installed in a 1/4 drawer cabinet at a minimum.
The programmable feature of L7 is particularly suitable for situations where simple logic control is required for motor circuits, and can replace small PLCs to save equipment investment.

• Intelligent programmable function：

Support PLC logic programmable functions that comply with the IEC-61131-3 graphic programming standard. PLPshell, a specialized Chinese English debugging software based on Microsoft Windows operating system, has a graphical programming interface that is extremely easy for users to master
Grip, easy to use.
By using the USB (B-type) interface on the display module panel, PLPshell software can be used to download logic to the main body, as well as set settings and debug protection. Two main screens can be customized in PLPshell. By using PLPshell software programming technology, various protection functions of electric motors can be achieved, as well as complex automation control functions such as logic control, such as automatic motor start stop control, forward and reverse control, voltage reduction start control, etc. It can also be programmed to cooperate with other intelligent devices to achieve process interlocking logic control.

• Comprehensive protection function：

The L7 device collects data such as current, voltage, grounding current, circuit breaker status, and switch input status to comprehensively protect, monitor, and control low-voltage motors.
L7 device protection functions: short circuit protection, thermal overload protection, long start-up time protection (automatic exit after start-up), locked rotor protection, tE time protection, phase sequence protection, current imbalance protection, timed overcurrent protection, phase loss protection, undercurrent protection, grounding overcurrent protection, anti shaking restart protection, undervoltage protection, leakage current protection, timed overload protection, voltage loss restart protection, overvoltage protection.

• DI/DO module：

The standard configuration provides 12DI/8DO interfaces.

• SOE record：

Record the year/month of 200 occurrences of faults/day/Hours/minutes/seconds/milliseconds and related parameters and information.