10
10. Power Adjustment and Soft Start Time Adjustment
10-1. Internal Power Regulation
The power adjuster allows adjusting thyristor output in a range from 0% to 100% when the control input signal is at 100%. Power adjuster can
change PAC27 output ramping with respect to control output signals.
10-2. Soft Start Time Adjustment
Soft start is the function to delay thyristor output with respect to a change in control input signal.
It can reduce the working load on equipment by suppressing transient current when power is turned on, and has the effect of suppressing the
rush current of a heater.
Setting is possible from less than one second (min.) to more than 30 seconds (max.). The longer the set time, the slower the response of output.
Time should be adjusted suitably for characteristics of a load to be used.
Setting a short time for soft start when the current limiting function is included, the activation of the current limiting function may be delayed
relatively to the response of output of the current limiting function. In that case, a time for soft start will have to be set much longer.
In the instrument with the current limiting function, the factory setting is approx. two seconds. When the time is set shorter than that, overcurrent
protection will work under certain load conditions.
