Decentral Solutions
Programming, FCD
300
131 Initial voltage
(INITIAL VOLTAGE)
Value:
0.0 - 200.0 V
✭
0.0 V
Function:
Initial voltage
is active for the time set in parameter
120
Start delay
, after a start command. This
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
✭
0%
Function:
In this parameter, the DC brake voltage is set which is
to be activated at stop when the DC brake frequency
set in parameter 127
DC brake cut-in frequency
is
reached, or if
DC braking inverse
is active via a digital
input or via serial communication. Subsequently,
the DC brake voltage will be active 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
✭
Depends on unit
Function:
A higher start torque can be obtained by increasing
the start voltage. Small motors (< 1.0 HP) normally
require a high start voltage.
Description of choice:
The factory setting will be suitable for must
applications, the value may need to be increase
gradually for high torque application.
Warning: If the use of start voltage
is exaggerated, this may lead to
over-energizing and overheating of the
motor and the variable frequency drive may cut out.
134 Load compensation
(LOAD COMPENSATIO)
Value:
0.0 - 300.0%
✭
100.0%
Function:
In this parameter, the load characteristic is set. By
increasing the load compensation, the motor is given an
extra voltage and frequency supplement at increasing
loads. This is used e.g. in motors/applications in
which there is a big difference between the full-load
current and idle-load current of the motor.
NOTE
If this value is set too high, the variable frequency
drive may cut out because of overcurrent.
Description of choice:
If the factory setting is not adequate, load
compensation must be set to enable the motor
to start at the given load.
Warning: Should be set to 0% in
connection with synchronous and
parallel-coupled motors and in the
case of quick load changes. Too high load
compensation may lead to instability.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.90.F2.22 - VLT is a registered Danfoss trademark
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