Delta PG-40 Spécifications télécharger pdf (Page 83)

VFD-B Series

5-48

2. DC Braking during stopping is used to shorten stopping time and also to hold a

stopped load in position. For high inertial loads, a dynamic braking resistor may

also be needed for quick decelerations.

08 - 04

Momentary Power Loss Operation Selection

Factory Setting: 00

Settings 00 Operation stops after momentary power loss.

01 Operation continues after momentary power loss, speed search

starts with the Master Frequency reference value.

02 Operation continues after momentary power loss, speed search

starts with the minimum frequency.



This parameter determines the operation mode when the AC drive restart from a

momentary power loss.

08 - 05

Maximum Allowable Power Loss Time

Factory Setting: 2.0

Settings 0.1 to 5.0 sec Unit: 0.1sec



If the power loss time is less than this parameter setting, the AC drive will resume

operation, or if exceed the Maximum Allowable Power Loss Time, the AC drive output is

then turned off.

08 - 06

Baseblock Time for Speed Search (BB)

Factory Setting: 0.5

Settings 0.1 to 5.0 sec Unit: 0.1sec



When momentary power loss is detected, the AC drive will stop its output, and then wait

for a specified period of time (determined by Pr.08-06, called Base-Block) before

resuming the operation. Setting of this parameter should be the residual voltage with a

close-to-0V value on the output end before the drive is activated again.



This parameter could also determine the searching time when performing External

Baseblock and Auto Restart after Fault (Pr.08-14).

08 - 07

Current Limit for Speed Search

Factory Setting: 150

Settings 30 to 200% Unit: 1%



This parameter limit the current output when the Drive operates in speed search mode.



When executing speed search, V/F curve will base on the setting of Group 01.

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Delta PG-40 Spécifications Page 83

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