LG Electronics C Series manual Protective functions, Electronic Thermal

Chapter 12. Protective functions

12.1 Electronic Thermal

	Group		LED	Parameter Name	Set
			display		value
Function			F50	[Electronic thermal	1
group 1				select]
		F51		[Electronic thermal level for	-
				1 minute]
		F52		[Electronic thermal level for	-
				continuous]
		F53		[Motor type]	-

Min/Max setting

0/1

50/150

0/1

	Factory		Unit
	default
0
150		%

100%

ƒSelect F50 – [Electronic thermal select] to 1.

ƒIt activates when the motor is overheated (time-inverse). If current greater than set in F51 flows, inverter output is turned off for the preset time in F51- [Electronic thermal level for 1 minute].

F51: Enter the value of max current that is capable of flowing to the motor continuously for one minute. It is set in percent of motor rated current. The value cannot be set lower than F52.

F52: Enter the amount of current for continuous operation. Normally motor rated current is used. It cannot be set greater than F51.

F53: For an inductance motor, cooling effects decrease when a motor is running at low speed. A special motor is a motor that uses a separately powered cooling fan maximize cooling effect even in low speed. Therefore, as the motor speed changes, the cooling does not change.

F53

[Motor type]

0

1

Standard motors having a cooling fan directly connected to the shaft

Special motor that uses a separately powered cooling fan.

Current for
continuous [%]	H53 = 1
100
95	H53 = 2
65
	Freq [Hz]
20	60

Current [%]

F51
F52
60	ETH trip time [sec]

110