Toshiba Single-phase 200V class 0.2 to 2.2kW ・Qec, ・Qen, ・Grjq, ・Gtt, ・Gtt, ・Gtt, ・Ggr

							E6581090
		Here are typical causes of tripping and the corresponding retry processes.
		Cause of		Retry process		Canceling conditions
		tripping
		Momentary		Up to 10 times of retry in succession		The retry function will be cancelled
		power failure		1st retry: About 1 sec. after tripping		at once if:
		Overcurrent		2nd retry: About 2 sec. after tripping		• Tripping occurs for any reason
		Overvoltage		3rd retry: About⋅2 sec. after tripping		other than momentary power
		Overload		⋅		failure, overcurrent, overvoltage
				⋅
				10th retry: About 10 sec. after tripping		or overload.
						• The motor does not restart within
						the specified number of times.
	★The retry function is not activated if tripping is caused by one of the following:
		・QEC	: Arm overcurrent at start-up		・GTT : Main body RAM fault
		・QEN	: Overcurrent on the load side at start-up		・GTT : Main body ROM fault
		・GRJQ	: Output open-phase failure		・GTT		: CPU fault
		・G	: External tripping stop		・GTT		: Remote control error
		・WR	: Undervoltage stop		・GTT		: Driver fault
		・GH	: Ground fault trip		・GGR		: EEPROM fault
6
		・GRJK : Input open-phase failure
	★Protective operation detection relay signals (FLA, FLB and FLC terminals) are not sent during the

retry process.

★A virtual cooling time is provided for overload tripping (QN, QN), so that the retry process is started after the virtual cooling time and retry time.

★In the case of overvoltage tripping (QR~QR), tripping may recur unless the DC voltage falls below a predetermined level.

★In the case of overheating tripping (QJ), tripping may recur unless the internal temperature of the inverter falls below a predetermined level, since the internal temperature is monitored.

★Even if trip retention selection parameter (H) is set to 1, the retry function is enabled if the number of times of retry is set with H.

★During the retry process, the message “TVT[” and the item specified with the status monitor selection parameter H are displayed alternately.

6.10.4 Avoiding overvoltage tripping

H

: Over voltage limit operation

• Function

This parameter is used to keep the output frequency constant or increase the frequency to prevent overvoltage tripping due to an increase in DC voltage during deceleration or constant- speed operation. The deceleration time may be prolonged during overvoltage limit operation.

Overvoltage limiting level

Output frequency

Overvoltage limiting level DC voltage

[Parameter setting]

Title	Function	Adjustment range	Default setting
	Over voltage limit	0: Enabled, 1: Disabled,
H		2: Enabled (forced quick	0
	operation
		deceleration)
		F-16