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Application Notes
C-3
[Motor NP FLA] is multiplied by [Motor OL Factor] to select the rated
current for the motor thermal overload. This can be used to raise or lower
the level of current that will cause the motor thermal overload to trip.
The effective overload factor is a combination of [Motor OL Hertz] and
[Motor OL Factor].
The VTAC 9 (firmware version 3.001 or greater) has the ability to retain
the motor overload count at power down per the 2005 NEC motor
overtemp requirement. To Enable/Disable this feature, refer to the table
below. Once Enabled, the value for [Testpoint 1 Sel] may be changed.
Changing Overload Factor
0
10
20
30
40
50
60
70
80
90 100
% of Base
S
peed
Continuous
R
ating
OL % = 1.20
OL % = 1.00
OL % = 0.80
0
20
40
60
80
100
120
140
Motor Overload Memory Retention Per 2005 NEC
Overload Retention [Testpoint 1 Sel], param 234 [Testpoint 1 Data], param 235
Enable
“629”
Any non-zero value
(1)
(1)
Default setting.
Disable
“629”
“0”
Summary of Contents for 9VT201-007HTNNN
Page 1: ...VTAC 9 AC Drive Firmware Version 3 xx User Manual ...
Page 4: ...soc 2 ...
Page 14: ...P 8 Overview Publication 9VT UM001D EN P Notes ...
Page 56: ...1 42 Installation Wiring Publication 9VT UM001D EN P Notes ...
Page 62: ...2 6 Start Up Publication 9VT UM001D EN P Notes ...
Page 130: ...3 68 Programming and Parameters Publication 9VT UM001D EN P Notes ...
Page 150: ...4 20 Troubleshooting Publication 9VT UM001D EN P Notes ...
Page 176: ...A 26 Supplemental Drive Information Publication 9VT UM001D EN P Notes ...
Page 196: ...B 20 Using the LCD OIM Publication 9VT UM001D EN P Notes ...
Page 212: ...C 16 Application Notes Publication 9VT UM001D EN P Notes ...
Page 223: ......