Delta VFD300C43S-HS User Manual page 385

Capacitor oH Warning Level
Settings
 Sets the over-heat warning level of the drive's internal DCBUS capacitor.
 When the setting is less than 10.0 degree, the drive uses its internal capacitor oH warning level.
Ripple of Input Phase Loss

Settings
Detected Input Phase Loss (OrP) Action

Settings
 When the drive detects the DC BUS ripple exceeds the setting for Pr. 06-52, and lasts for the time
of Pr. 06-50 plus 30 seconds, the drive executes the input phase loss protection according to Pr.
06-53.
 During the time of Pr. 06-50 plus 30 seconds, if the DCBUS ripple drops lower than the setting for
Pr. 06-52, the Orp protection recalculates.
 Derating Protection
Settings
 Minimum carrier limit: frequency command x 10 lowest sampling point. For example: when the
frequency command is set to 600 Hz, the minimum carrier wave is 6 kHz (= 600Hz x 10), and so
on.
 Setting 0:
When the operating point is greater than the derating curve, the rated current is constant, and
carrier frequency (Fc) output by the drive decreases automatically according to the ambient
temperature, overload output current and overload time. If overloads are not frequent, and the
concern is only about the carrier frequency operating with the rated current for a long time, and
changes to the carrier wave due to short overload are acceptable, set to 0.
Refer to Section 9-4 "Derating Curve of Ambient Temperature" for the level of carrier frequency.
Take VFD750C43A-HS for example: ambient temperature 50ºC, UL Open Type, and independent
installation. When the carrier frequency is set to 15kHz, it corresponds to 75% of the rated output
current. When the output current is higher than this value, it automatically decreases the carrier
wave according to the ambient temperature, output current and overload time. At this time, the
overload capacity of the drive is still 120% of the rated current.
0.0–110.0 degree
0.0–320.0V
DC
0: Warn and ramp to stop
1: Warn and coast to stop
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
12.1-06-19
Chapter 12 Description of Parameter SettingsC2000-HS
Default: Depending
on the model power
Default: 60.0
Default: 0
Default: 0