Chapter 5 Parameters
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VFD-B Series
5-68
Revision July 2008, BE16, SW V4.08 & V5.00
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 (%)
06 - 08
Present Fault Record
06 - 09
Second Most Recent Fault Record
06 - 10
Third Most Recent Fault Record
06 - 11
Fourth Recent Fault Record
Factory Setting: 00
Readings
00
No
fault
01
Over-current
(oc)
02
Over-voltage
(ov)
03
Overheat
(oH)
04
Overload
(oL)
05
Overload1
(oL1)
06
External fault (EF)
