Toshiba VF-AS1 Setting the motor overload starting level, Motor 150%-overload time limit

E6581301

■ Setting of motor electronic thermal protection level 1 ￿￿￿

If the capacity of the motor is smaller than the capacity of the inverter, or the rated current of the motor is smaller than the rated current of the inverter, adjust the electronic thermal protection level 1 ￿￿￿ so that it fits the motor's rated current.

*If the indications are in percentages[%], then 100% equals the inverter's rated output current [A].

Output current reduction factor [%]/[A]

￿￿￿×1.0
￿￿￿×0.6
0
￿￿￿￿=￿￿￿Hz	Output frequency [Hz]

Setting the motor overload starting level

2) Motor 150%-overload time limit ￿￿￿￿

The motor 150%-overload time limit parameter ￿￿￿￿ is used to set the time elapsed before the motor trips under

5		a load of 150% (overload trip ￿￿￿) within a range of 10 to 2400 sec.
											[Example setting]
									Operation
														Monitored output			Motor overload time [s] (Outline data)
			Operation frequency!						frequency					current [%]
			0.01Hz *1 "						no less than			￿￿￿=￿￿￿			￿￿￿=￿￿		￿￿￿￿=￿￿￿		￿￿￿￿=￿￿￿
	Motor overload!								￿￿￿￿	!							￿￿￿￿	0.01Hz	￿￿￿￿	0.01Hz
														68	34		–	7200	–	3600
			time [s]
														70	35		–	3600	–	1800
														80	40		–	1000	–	500
														90	45		–	600	–	300
														100	50		–	420	–	210
														112	56		12000	310	6000	155
														120	60		2400	270	1200	135
														130	65		1200	230	600	115
	Motor 150%-													140	70		800	190	400	95
	overload time limit!													150	75		600	170	300	85
														200	100		270	110	135	55
			￿￿￿￿
																Monitored output current [%]!
	0
								×1￿1!
							￿￿￿
														!			*1 Except for the cases of
						!				￿￿￿			￿
												×1 5
				￿￿￿		×0￿6											￿￿￿￿=￿, ￿￿￿ [Hz]"
								Motor overload protection characteristics
		[Parameter setting]
			Title				Function								Adjustment range				Default setting
		￿￿￿￿￿			Motor 150%-overload time limit									￿￿~￿￿￿￿ sec.					￿￿￿￿

E-24