Delta Electronics VFD-EL manual Operation time seconds, Load, factor %, 06.07

Chapter 4 Parameters

This parameter sets the time for how long over-torque must be detected before “OL2” is displayed.

06.06Electronic Thermal Overload Relay Selection (OL1)

		Factory Setting: 2
Settings	0	Operate with a Standard Motor (self-cooled by fan)
	1	Operate with a Special Motor (forced external cooling)
	2	Operation disabled

This function is used to protect the motor from overloading or overheating.

rated current of the motor%

100

80

60

40

20

25	50	100	150
	rated frequency of the motor %

rated current of the motor%

100

80

60

40

20

25	50	100	150
	rated frequency of the motor %

		Standard motor	Special Motor
		(self-cooled by fan)	(forced external cooling)
06.07	Electronic Thermal Characteristic		Unit: 1
	Settings	30 to 600 sec	Factory Setting: 60

The parameter determines the time required for activating the I2t electronic thermal protection function. The graph below shows I2t curves for 150% output power for 1 minute.

Operation time (seconds)

350
300
				50Hz or more
250				10Hz
200				5Hz
150
100
50						Load
0	50	100	150	200	250	factor (%)

4-70 Revision August 2008, 2ELE, V1.02