Rotary drilling machine control system

详情

~The turntable control system adopts ACS*************7 AC frequency conversion device of ABB company through "a pair of drive mode" to achieve stepless speed regulation turntable. The composition of the whole rotary drive system is mainly composed of a turntable, turntable motor frequency conversion device frequency conversion main main motor and encoder, a fan, a main motor heater device.

The device is powered on, from the touch screen to start the rotary converter driller. Start signal through the PROFIBUS network to the PLC floor from the Secretary, after program interlock control turntable motor, fan. When the rotary converter stops, through program control through PROFIBUS issued a turntable motor, fan stop signal, the motor stop.

Turntable motor control system can be given by a handwheel manual speed driller room right hand box and consists of a three bit self-locking switch given direction signal to PLC. In the touch screen picture set torque turntable turntable motor limiting. Through PLC, the signal is converted to the device control signal which is transmitted to the rotary inverter, current control motor inverter to output the corresponding frequency, so as to realize the stepless variable speed and torque of rotary limiting and positive inversion.

At the same time, frequency conversion device can provide the turntable motor real time current, torque, forward / reverse state, speed and other parameters, to achieve the monitoring function of the parameters of rotary current, in the process of drilling torque, speed etc..

According to the working state of control system of turntable by dynamic braking and combined with turntable inertial brake logic control can realize the system anti reverse protection function.

Rotary fan pressure protection is realized through the pressure signal detection. PLC can also be based on the pressure signal to understand the actual operation situation of turntable motor fan. If you run a stroke turntable motor machine failure, the PLC through the PROFIBUS network transmits control signals to the driller console, HMI will display the wind pressure alarm, the prompt operation personnel; and delay after the cessation of main motor running turntable.