Parameters and firmware blocks
128
11.06
DC HOLD
(see above)
Enables the DC hold function. The function makes it possible to lock the rotor at zero speed.
When both the reference and the speed drop below the value of parameter
,
the drive will stop generating sinusoidal current and start to inject DC into the motor. The current is set
by parameter
. When the reference speed exceeds parameter
, normal drive operation continues.
Notes:
• The DC hold function has no effect if the start signal is switched off.
• The DC hold function can only be activated in speed control mode.
• The DC hold function cannot be activated if par.
• Injecting DC current into the motor causes the motor to heat up. In applications where long DC hold
times are required, externally ventilated motors should be used. If the DC hold period is long, the
DC hold cannot prevent the motor shaft from rotating if a constant load is applied to the motor.
Bit pointer: Group and index and bit
(0)
Disabled
DC hold function disabled.
(1)
Enabled
DC hold function enabled.
11.07
AUTOPHASING MODE
(see above)
Selects the way the autophasing routine is performed. See also section
(0)
Turning
This mode gives the most accurate autophasing result. This mode can
be used, and is recommended if it is allowed for the motor to rotate
and the start-up is not time-critical.
Note:
This mode will cause the
motor to rotate during the motor ID run.
(1)
Standstill 1
Faster than the
mode, but not as accurate. The motor will
not rotate.
(2)
Standstill 2
An alternative standstill autophasing mode that can be used if the
TURNING mode cannot be used, and the
mode gives
erratic results. However, this mode is considerably slower than
.
t
t
DC Hold
Motor speed
Reference
Содержание ACSM1 Series
Страница 1: ...ABB motion control drives Firmware manual ACSM1 motion control program ...
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Страница 34: ...Drive programming using PC tools 34 ...
Страница 86: ...Drive control and features 86 ...
Страница 265: ...Parameters and firmware blocks 265 1 100 us 100 µs 2 1 ms 1 ms 3 50 ms 50 ms ...
Страница 302: ...Parameter data 302 ...
Страница 422: ...Application program template 422 ...
Страница 430: ...Appendix A Fieldbus control 430 ...
Страница 500: ...Appendix D Application examples 500 ...
Страница 508: ...Appendix E Control chain and drive logic diagrams 508 ...
Страница 510: ...3AFE68848270 REV H EN 2015 06 26 Contact us www abb com drives www abb com drivespartners ...