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Start frequency/voltage clockwise
(CLOCKWISE OPERATION)
Start frequency/voltage in reference direction
(VERTICAL OPERATION)
Function:
This is where to choose the required mode during the
start delay time (parameter 120 Start delay time).
Description of choice:
Select DC hold during start delay time [0] to energize
the motor with a DC hold voltage during the start delay
time. Set voltage in parameter 137 DC hold voltage.
Choose DC brake during start delay time [1] to energize
the motor with a DC brake voltage during the start delay
time. Set voltage in parameter 132 DC brake voltage.
Choose Coasting during start delay time [2] and the
motor will not be controlled by the variable frequency
drive during the start delay time (inverter turned off).
Choose Start frequency/voltage clockwise [3] to
obtain the function described in parameter 130
Start frequency and 131 Voltage at start during start
delay time. Regardless of the value assumed by
the reference signal, the output frequency equals
the setting in parameter 130 Start frequency and
the output voltage will correspond to the setting
in parameter 131 Voltage at start .
This functionality is typically used in hoist applications.
It is used in particular in applications in which a cone
anchor motor is applied, where the direction of rotation
is to start clockwise followed by the reference direction.
Select Start frequency/voltage in reference direction
[4] to obtain the function described in parameter
130 Start frequency and 131 Voltage at start
during the start delay time.
The direction of rotation of the motor will always
follow in the reference direction. If the reference signal
equals zero, the output frequency will equal 0 Hz,
while the output voltage will correspond to the setting
in parameter 131 Voltage at start. If the reference
signal is different from zero, the output frequency will
equal parameter 130 Start frequency and the output
voltage will equal parameter 131 Voltage at start. This
functionality is used typically for hoist applications with
counterweight. It is used in particular for applications
in which a cone anchor motor is applied. The cone
= factory setting. () = display text [] = value for use in communication via serial communication port
112
Decentral Solutions
anchor moto r can break away using parameter 130
[3]
Start frequency and parameter 131 Voltage at start.
[4]
122 Function at stop
(FUNCTION AT STOP)
Value:
Coasting (COAST)
DC hold (DC HOLD)
Function:
This is where to choose the function of the variable
frequency drive after the output frequency has become
lower than the value in parameter 123 The min.
frequency for activation of function at stop or after
a stop command and when the output frequency
has been ramped down to 0 Hz.
Description of choice:
Select Coasting [0] if the variable frequency drive is
to 'let go' of the motor (inverter turned off).
Select DC hold [1] if parameter 137 DC hold
voltage is to be activated.
123 Min. frequency for activation of
function at stop
(MIN.F.FUNC.STOP)
Value:
0,1 - 10 Hz
Function:
In this parameter, the output frequency is set at
which the function selected in parameter 122
Function at stop is to be activated.
Description of choice:
Set the required output frequency.
NOTE
If parameter 123 is set higher than parameter
130, then the start delay function (parameter
120 and 121) will be skipped.
MG.90.F2.22 - VLT is a registered Danfoss trademark
[0]
[1]
0,1 Hz
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