Delta C2000 Series User Manual page 373

Reserved
Ripple of Input Phase Loss
Settings 230V Series: 0.0~160.0 Vdc
460V Series: 0.0~320.0 Vdc
When the DC BUS ripple is higher than Pr06-52, and continue Pr06-50 plus 30 seconds, drive will
trip up OrP and act depending on the setting of Pr06-53 to stop.
In the time period Pr06-50 plus 30 seconds, if the DC BUS ripple is lower than Pr06-52, the Orp
protection counter will be restart.
Treatment for the detected Input Phase Loss
Settings 0: warn, ramp to stop
1: warn, coast to stop
Over ripple protection
When the DC BUS ripple is bigger than protection level, drive will trip up OrP and depending on
how the parameter 06-53 is set to stop.
Reserved
Derating Protection
Settings 0: constant rated current and limit carrier wave by load current and
temperature
1: constant carrier frequency and limit load current by setting carrier wave
2: constant rated current(same as setting 0), but close current limit
Setting 0:
When the rated current is constant, carrier frequency (Fc) outputted by PWM will auto
decrease according to surrounding temperature, overload output current and time. If overload
situation is not frequent and only cares the carrier frequency operated with the rated current for a
long time and carrier wave changes during short overload, it is recommended to set to 0.
Refer to the following diagram for the level of carrier frequency. Take VFD007C43A in normal
duty as example, surrounding temperature 50oC with independent installation and UL open-type.
When the carrier frequency is set to 15kHz, it corresponds to 72% rated output current. When it
outputs higher than the value, it will auto decrease the carrier frequency. If the output is 83% rated
current and the carrier frequency will decrease to 12kHz. In addition, it will also decrease the
carrier frequency when overload. When the carrier frequency is 15kHz and the current is
120%*72%=86% for a minute, the carrier frequency will decrease to the factory setting.
Chapter 12 Description of Parameter Settings C2000 Series
OrP
12-06-20
Factory Setting:30.0 / 60.0
Factory Setting: 0
Factory Setting: 0