Function Structure

1. OL series of DC drive is mainly used to drive DC motor, and widely applied to welding tube mill industry. Its unique weak magnetic control circuit can ensure a wide speed regulating scope of DC motor. Its steady digital DC control circuit can not only make the DC drive has a stable work and strong anti-interference ability, but also has a good user interface which is convenient for operation.

2. DC drive includes: 3-phase 6 pulse SCR rectifier, SCR excitation control module, full digital DC control circuit.  

Technical Features

     Perfect structure design
     1.Integration design of DC drive with the features of compact structure and small size. Original type or extension type structure is optional.
     2.Main loop thyristor adopts high efficiency air cooling radiator which is convenient for installation and maintenance.
     3.High standard electromagnetism compatibility design, electromagnetism radiation meets national standard.
     4.Closed cabinet design, meeting rigor environmental requirements on site.

     Full digital control system
     1.Adopt 590DIGITAL series full digital controller to realize precise synchronous trigger with high control precision of motor speed and rapid response speed.
    2.Motor operation parameter adopts digital menu setting, which is convenient and flexible with good HMI.
    3.The power supply has perfect protection function with reliable working and low failure rate.


Main Technical Parameter

model	AC input	Rectifying mode	excitation	Rated DC voltage	Rated DC current	Power coefficient	Working status
OL－110A/460V	3AC380V 50/60Hz	6pulse	uniphase	460V	110A	≥0.86	continuous
OL－200A/460V	3AC380V** 50/60Hz	6pulse	uniphase	460V	200A	≥0.86	continuous
OL－300A/460V	3AC600V** 50/60Hz	6pulse	uniphase	460V	300A	≥0.86	continuous
OL－500A/460V	3AC600V** 50/60Hz	6pulse	uniphase	460V	500A	≥0.86	continuous
OL－800A/460V	3AC600V** 50/60Hz	6pulse	uniphase	460V	800A	≥0.86	continuous

* Can be customized according to user’s grid


equipment selection*
1.Select DC drive model as per rated voltage and rated power of DC motor.
2. The DC drive needs to reserve 20% power margin.