Delta Electronics Network Device VFD-S User Manual page 71

Chapter 5 Parameters|VFD-S Series
Over-torque Setting
Applications
Pumps, fans and
extruders
Upper/Lower Limit Frequency
Applications
Pump and fan
Skip Frequency Setting
Applications
Pumps and fans
Carrier Frequency Setting
Applications
General application
Keep Running when Frequency Command is Lost
Applications
Air conditioners
5-14
Purpose
To protect
machines and to
have continuous/
reliable operation
Purpose
Control the motor
speed within
upper/lower limit
Purpose
To prevent
machine vibrations
Purpose
Low noise
Purpose
For continuous
operation
Functions
The over-torque detection level can be
set. Once OC stall, OV stall and over-
torque occurs, the output frequency
will be adjusted automatically. It is
suitable for machines like fans and
pumps that require continuous
operation.
Functions
When user cannot provide
upper/lower limit, gain or bias from
external signal, it can be set
individually in AC motor drive.
Functions
The AC motor drive cannot run at
constant speed in the skip frequency
range. Three skip frequency ranges
can be set.
Functions
The carrier frequency can be
increased when required to reduce
motor noise.
Functions
When the frequency command is lost
by system malfunction, the AC motor
drive can still run. Suitable for
intelligent air conditioners.
Revision August 2008, SE09, SW V2.61
Related
Parameters
6-03~6-05
Related
Parameters
1-07
1-08
Related
Parameters
8-08~8-13
Related
Parameters
2-03
Related
Parameters
2-05