Toshiba TOSVERT VF-AS3, Instruction Manual

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E6582062 
5-17
5. [Fundamental operation] How to use parameters
3
4
5
9
Set <F631: Inverter overload detection> to "1: Temperature estimation".
• If the inverter overload trip "OL1" occurs, you can clear it by decreasing the value of <F601: Stall
prevention level 1> or setting <ACC: Acceleration time 1> or <dEC: Deceleration time 1> to a
longer value.
• To protect the inverter unit, you cannot turn off inverter overload detection.
0: 150%-60s (HD rating) or 0: 120 ％ -60s (ND rating)
The inverter is protected with the uniform overload curve of 150%-60s (120%-60s for ND rating),
regardless of temperature.
1: Temperature estimation
Estimate inverter internal temperature rise and automatically adjust overload protection
characteristics (the diagonally shaded area in the following figure).
• When the output frequency is 0.1 Hz or less, or when the output current is 150% or more, the
overload trip "OL1" or overcurrent trips "OC1 through OC3" may occur in shorter time to protect
the inverter.
Title Parameter name Adjustment range Default setting
F631 Inverter overload
detection HD
0: 150%-60s
1: Temperature estimation
ND
0: 120%-60s
1: Temperature estimation 10
Inverter overload time(s)
Monitored output current (%)
60
0 110
Ჟ
150
Ჟ
105 ％
(ND)
120 Ჟ
(ND)
Inverter overload protection characteristics
100%: Inverter rated output current
Current (%)
Inverter overload time (s)
(Outline data)
111 2400
120 240
130 120
140 80
150 60
165 2
200 0.5
60
0 110 Ჟ 150 Ჟ
Inverter overload time (s)
Inverter overload protection characteristics
Monitored output current (%)
100%: Inverter rated output current
<F631>=0
105
％
(ND)
120
Ჟ
(ND)