Danfoss VLT FCD 303 Operating Instructions Manual page 45

Select ETR warning if you want a warning when the
motor is overloaded according to the calculations.
You can also programme the frequency converter to
gi v e a warning signal via the digital output.
Select ETR Trip if you want a trip when the motor
is overloaded according to the calculations.
Select ETR warning 1-4 if you want a warning when
the motor is overloaded according to the calculations.
You can also programme the frequency converter to
gi v e a warning signal via one of the digital outputs.
Select ETR Trip 1-4 if you want a trip when the motor
is overloaded according to the calculations.
NB!:
This function cannot protect the indi v idual
motors in the case of motors linked in parallel.
130 Start frequency
(START FREQUENCY)
Value:
0.0 - 10.0 Hz
Function:
The start frequency is acti v e for the time set in
parameter 120 Start delay, after a start command.
The output frequency will 'jump' to the next preset
frequency. Certain motors, such as conical anchor
motors, need an extra voltage/start frequency
(boost) at start to disengage the mechanical brake.
To achieve this parameters 130 Start frequency
and 131 Initial voltage are used.
Description of choice:
Set the required start frequency. It is a precondition
that parameter 121 Start function, is set to
Start frequency/voltage clockwise [3] or Start
frequency voltage in reference direction [4] and
that in parameter 120 Start delay a time is set
and a reference signal is present.
NB!:
If parameter 123 is set higher than parameter
130, the start delay function (parameter
120 and 121) will be skipped.
131 Initial voltage
(INITIAL VOLTAGE)
Value:
0.0 - 200.0 V
Function:
Initial voltage is acti v e for the time set in parameter
120 Start delay , after a start command. This
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.04.B7.02 - VLT is a registered Danfoss trademark
parameter can be used for example for lifting/dropping
applications (conical anchor motors).
Description of choice:
Set the required voltage necessary to cut out the
mechanical brake. It is assumed that parameter
121 Start function, is set to Start frequency/voltage
clockwise [3] or Start frequency/voltage in reference
direction [4] and that in parameter 120 Start delay a
time is set, and that a reference signal is present.
132 DC brake voltage
(DC BRAKE VOLTAGE)
Value:
0 - 100% of max. DC brake voltage
Function:
In this parameter, the DC brake voltage is set which is
to be acti v ated at stop when the DC brake frequency
set in parameter 127 DC brake cut-in frequency is
0.0 Hz
reached, or if DC braking inverse is acti v e via a digital
input or via serial communication. Subsequently,
the DC brake voltage will be acti v e for the time
set in parameter 126 DC brake time.
Description of choice:
To be set as a percentage value of the max. DC
brake voltage, which depends on the motor.
133 Start voltage
(START VOLTAGE)
Value:
0.00 - 100.00 V
Function:
A higher start torque can be obtained by increasing
the start voltage. Small motors (< 1.0 kW)
normally require a high start voltage.
0.0 V
®
VLT FCD Series
Depends on unit
0%
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