Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-75
06 - 05
Over-Torque Detection Time (OL2) Unit: 0.1
Settings 0.1 to 60.0 sec Factory Setting: 0.1
This parameter sets the time for how long over-torque must be detected before “OL2” is displayed.
06 - 06
Electronic Thermal Overload Relay Selection (OL1)
Factory Setting: 02
Settings 00 Operate with a Standard Motor (self-cooled by fan)
01 Operate with a Special Motor (forced external cooling)
02 Operation disabled
This function is used to protect the motor from overloading or overheating.
06 - 07
Electronic Thermal Characteristic Unit: 1
Settings 30 to 600 sec Factory Setting: 60
The parameter determines the time required for activating the I
2
t electronic thermal protection function. The
graph below shows I
2
t curves for 150% output power for 1 minute.
1
2
3
4
5
60Hz or more
50Hz
10Hz
5Hz
0
20
40
60
80
100
120
140
160
180 200
Operation
time(min)
Load
factor (%)
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