Delta Electronics AC Motor Drive VFD007S23A - Manual (Page 69)

Chapter 5 Parameters|VFD-S Series
5-14 Revision August 2006, SE08, SW V2.61
Over-torque Setting
Applications Purpose Functions
Related
Parameters
Pumps, fans and
extruders
To protect
machines and to
have continuous/
reliable operation
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.
6-03~6-05
Upper/Lower Limit Frequency
Applications Purpose Functions
Related
Parameters
Pump and fan
Control the motor
speed within
upper/lower limit
When user cannot provide
upper/lower limit, gain or bias from
external signal, it can be set
individually in AC motor drive.
1-07
1-08
Skip Frequency Setting
Applications Purpose Functions
Related
Parameters
Pumps and fans
To prevent
machine vibrations
The AC motor drive cannot run at
constant speed in the skip frequency
range. Three skip frequency ranges
can be set.
8-08~8-13
Carrier Frequency Setting
Applications Purpose Functions
Related
Parameters
General application Low noise
The carrier frequency can be
increased when required to reduce
motor noise.
2-03
Keep Running when Frequency Command is Lost
Applications Purpose Functions
Related
Parameters
Air conditioners
For continuous
operation
When the frequency command is lost
by system malfunction, the AC motor
drive can still run. Suitable for
intelligent air conditioners.
2-05