15. Handy Instruction Design Examples 15.2 RAMP - Ramp Control of Crane Up Stop Down X1 X0 X2 Control Purpose: z The load of the crane is quite big, so the motor requires ramp up and ramp down control during gradual start as well as gradual stop process. z Apply Delta analog output MPU DVP10SX to generate voltages of 0~10V for controlling the frequency of AC motor drive, and the drive will output variable frequency current to control rotation speed of the crane motor. Devices: Control Program: M1002 Set the scan cycle to 20ms Enabling RAMP mode DVP-PLC Application Examples 15-3 Device Function X0 X0 = ON when Up is pressed. X1 X1 = ON when Down is pressed. X2 X2 = ON when Stop is pressed.
Y0 Motor running forward (Lifting goods) Y1 Motor running reverse (Landing goods) SET M1039 MOV K20 D1039 SET M1026