Parameter Descriptions
7-41
H7
Dwell Frequency
Range:
0.1-400 [Hz]
Default:
5.00
Access
Configurable
See also:
P35, P36, H8
When run frequency is issued, the motor will accelerate after the Dwell
Frequency is applied for the Dwell Time – H8. Dwell frequency can be set
within Frequency High and Low Limits (P35 and P36).
Dwell frequency is used to output torque in an intended direction. It is
useful in hoisting applications to apply torque before releasing a mechanical
brake. Rated slip frequency is calculated by the formula shown below:
Where,
= Rated slip frequency
= Rated frequency
= = Motor nameplate RPM
= Number of Motor poles
Example:
Rated frequency = 60Hz; Rated RPM = 1740rpm;
Number of motor poles= 4
H8
Dwell Time
Range:
0-10 [sec]
Default:
0.0
Access
Configurable
See also:
H7
Sets the time for dwell operation.
⎟
⎠
⎞
⎜
⎝
⎛
×
−
=
120
P
rpm
f
f
r
s
s
f
r
f
rpm
P
Hz
f
s
2
120
4
1740
60
=
⎟
⎠
⎞
⎜
⎝
⎛
×
−
=
Frequency
Run
command
Dwell time
Dwell freq.
Start freq.
Содержание VS1MD
Страница 2: ...Instruction Manual VS1MD User Manual MN760 3 6 07...
Страница 5: ...4 VS1MD AC Drive User Manual...
Страница 11: ...1 2 VS1MD AC Drive User Manual...
Страница 27: ...4 8 VS1MD AC Drive User Manual...
Страница 103: ...7 58 VS1MD AC Drive User Manual...
Страница 131: ...8 28 VS1 MD AC Drive User Manual 8 13 Control Block Diagram m G k G h Vk Vm w t t...
Страница 133: ...8 30 VS1 MD AC Drive User Manual...
Страница 143: ...9 10 VS1 MD AC Drive User Manual...
Страница 150: ...Options Kits B 5 B 2 4 VS1MD NM1C B 2 5 VS1MD NM1D...
Страница 155: ...B 10 VS1MD User Manual...
Страница 167: ...VS1MD User Manual...
Страница 168: ......
Страница 169: ...Publication MN760 3 2007 Baldor Electric Company All rights reserved...