Delta VFD17AME43AFNAA User Manual

Chapter 12 Description of Parameter SettingsME300
12.1-06-19

LvX Auto-reset
Default: 0
Settings 0: Disable
1: Enable

Detected Input Phase Loss Action (OrP)
Default: 0
Settings 0: Warn and ramp to stop
1: Warn and coast to stop
 The drive executes the input phase loss protection according to Pr.06-53.

Derating Protection
Default: 0
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
 Allowable maximum output frequency and the minimum carrier wave limit in control mode:
For VF and SVC modes:
When the maximum output frequency is 599 Hz, the minimum carrier wave is 6 k.
 Setting 0:
When the operating point is greater than the derating curve (when the operating carrier wave
is greater than the rated carrier wave), 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 the following diagram for the level of carrier frequency. Take VFD9A0ME43ANSAA
in normal duty for example: ambient temperature 50°C, 100% duty, UL open-type, and
independent installation. When the carrier frequency is set to 10 kHz, 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 150% of the rated current.
 Setting 1:
When the operating point exceeds derating curve 1, the carrier frequency is fixed to the set
value. Select this mode if the change of carrier wave
and motor noise caused by ambient
temperature and frequent overload are not acceptable. Refer to Pr.00-17.
Refer to the following diagram for the derating level of the rated current. Take
VFD9A0ME43ANSAA in normal duty for example, when the carrier frequency is to be maintained
at 10 kHz, the rated current decreases to 75%. The OL protection executes when the current is
120% * 75% = 90% for one minute; therefore, it must operate by the curve to keep the carrier
frequency.

Delta VFD17AME43AFNAA Specifications

General

Brand	Delta
Model	VFD17AME43AFNAA
Category	DC Drives
Language	English