Table of Contents
Advertisement
Description of choice:
This is an extra safety precaution, aimed at
guaranteeing that the load is not lost during start
of a lifting/lowering operation.
142 Leakage reactance X
(LEAK. REACTANCE)
Value:
0.000 - XXX,XXX
Depends on choice of motor
Function:
After setting of parameters 102-106 Nameplate data,
a number of adjustments of various parameter is
made automatically, including the leakage reactance
X
. The shaft performance can be improved by
L
fine-tuning the leakage reactance X
NOTE
Parameter 142 The leakage reactance X
normally not to be changed if the nameplate
data have been set, parameters 102-106.
Description of choice:
X
can be set as follows:
L
1. The value is stated by the motor supplier.
2. Use the factory settings of X
frequency drive itself chooses on the basis
of the motor nameplate data.
144 Gain AC brake
(GAIN AC BRAKE)
Value:
1.00 - 1.50
Function:
This parameter is used to set the AC brake. Using par.
144 it is possible to adjust the size of the generator
torque that can be applied to the motor without the
intermediate circuit voltage exceeding the warning level.
Description of choice:
The value is increased if a greater possible brake
torque is required. If 1.0 is selected, this corresponds
to the AC brake being inactive.
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.90.F2.22 - VLT is a registered Danfoss trademark
L
.
L
is
L
which the variable
L
1.30
Decentral Solutions
NOTE
If the value in par. 144 is increased, the
motor current will simultaneously increase
significantly when generator loads are applied.
The parameter should therefore only be changed if
it is guaranteed during measurement that the motor
current in all operating situations will never exceed the
maximum permitted current in the motor. Please note:
that the current cannot be read out from the display.
146 Reset voltage vector
(RESET VECTOR)
Value:
*Off (OFF)
Reset (RESET)
Function:
When the voltage vector is reset it is set to the same
starting point each time a new process commences.
Description of choice:
Select reset (1) when running unique processes each
time they arise. This will enable repetitive precision
when stopping to be improved. Select Off (0) for
example for lifting/lowering operations or synchronous
motors. It is an advantage that the motor and the
variable frequency drive are always synchronized.
147 Motor type
(MOTOR TYPE)
Value:
*General (GENERAL)
Danfoss Bauer (DANFOSS BAUER)
Function:
This parameter selects the type of motor connected
to the variable frequency drive.
Description of choice:
The value can be selected general for most motor
brands. Select Danfoss Bauer for optimal settings
for Danfoss Bauer gear motors.
[0]
[1]
[0]
[1]
117
Advertisement
Table of Contents
