Delta CFP2000 Series User Manual page 356

Ripple of Input Phase Loss

Settings
 When the DC bus ripple is higher than Pr.06-52, and continues for Pr.06-50 plus 30 seconds, the
drive triggers an OrP and acts according to the setting of Pr.06-53 to stop.
 In the time period Pr.06-50 plus 30 seconds, if the DC bus ripple is lower than Pr.06-52, the OrP
protection counter restarts.
Treatment for the Detected Input Phase Loss (OrP)

Settings
 When the DC bus ripple voltage lasts for Pr.06-50 ripple time, the drive activates the Input Phase
Loss protection according to the Pr.06-53 settings:
DC bus ripple frequency ≤ 166 Hz

The amplitude is higher than Pr.06-52 setting [default 60 V]. It starts to count time after 20

consecutive times.
When the following conditions continue,ORP occurs.

(I)% is rated current percentage
(I)%
50
75
120
 When any condition is not satisfied, the ORP protect function is recalculated.
Derating Protection

Settings
 The maximum output frequency and its corresponded carrier frequency lower limit under each
control mode:
VF, SVC: 599 Hz, 6K

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 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 the Section 9-4 "Derating Curve of Ambient Temperature" for the level of carrier
frequency. Take VFD007FP4EA-52 in normal duty for example, ambient temperature 50°C, UL
open-type, and independent installation. When the carrier frequency is set to 15 kHz, it
0.0–200.0 V
DC
0: Fault and ramp to stop
1: Fault and coast to stop
Actual seconds
432
225
60
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
12.1-06-20
Chapter 12 Description of Parameter SettingsCFP2000
Default: 60.0
Default: 0
Default: 0