Total Solution for Industrial Automation
18
CH 4. Functions
4.4.2
Duty cycle ramp control (Buffer memory Offset 30 ~ 41)
If duty cycle ramp control time is configured prior to setting a duty cycle value, any
change in the duty cycle will be applied gradually. The duty cycle ramp control can
be operated by using TO instruction on buffer memory Offset 30~41.
If duty cycle ramp control time is changed during ramp operation, the change will
be applied not to the current operation, but to the next operation.
In case of power reset or CPU STOP, enter the value again by using TO instruction
as all value of buffer memory will be set back to initial value(0).
When M00 turns on, operate as below
a)
Input duty cycle ramp control time value 500(5seconds) to buffer memory Offset
30 by using TO instruction.
b)
Now, if ramp cycle value of 1000(100.0%) is entered into the buffer memory
Offset 10, the new duty cycle value will be introduced gradually over 5 seconds.
Note: Please perform step a) before step b).
Example 3: Duty Cycle Ramp Control
