Danfoss VLT Decentral FCD 300, Manual

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Decentral Solutions
Programming, FCD
300
1. Use the factory settings of R
S
which the variable
frequency drive itself chooses on the basis
of the motor nameplate data.
2. The value is stated by the motor supplier.
3. The value is obtained through manual
measurements: R
S
can be calculated by measuring
the resistance R
PHASE-PHASE
between two phase
terminals. R
S
= 0.5 x R
PHASE-PHASE
.
4. R
S
is set automatically when AMT has
been completed. See parameter 107
Auto motor adaption.
109 Stator reactance X
S
(STATOR REACTANCE)
Value:
0.00 - X,XX
✭
Depends on choice of motor
Function:
After setting of parameters 102-106 Nameplate data ,
a number of adjustments of various parameters
are made automatically, including stator reactance
X
S
. The shaft performance can be improved by
fine-tuning R
S
and X
S
, see procedure below.
Description of choice:
X
S
can be set as follows:
1. The value is stated by the motor supplier.
2. The value is obtained through manual measurements
X
S
is obtained by connecting a motor to electrical
current and measuring the phase-phase voltage
U
M
and the idle current .
3. Use the factory settings of X
S
which the variable
frequency drive itself chooses on the basis
of the motor nameplate data.
117 Resonance dampening
(RESONANCE DAMP.)
Value:
0 - 100 %
✭
0 %
Function:
Reduces the output voltage when running at low
load for avoiding resonance phenomena.
Description of choice:
If 0 is selected, there will be no reduction. If 100 % is
selected, the voltage is reduced to 50% at no load.
119 High start torque
(HIGH START TORQ.)
Value:
0.0 - 0.5 sec.
✭
0.0 sec.
Function:
To ensure a high start torque approx. 1.8 x I
INV.
can be
permitted for max. 0.5 sec. The current is, however,
limited by the variable frequency drive ’ s (inverter ’ s)
safety limit. 0 sec. corresponds to no high start torque.
Description of choice:
Set the necessary time for which a high start
torque is required.
120 Start delay
(START DELAY)
Value:
0.0 - 10.0 sec.
✭
0.0 sec.
Function:
This parameter enables a delay of the start-up time
after the conditions for start have been fulfilled.
When the time has passed, the output frequency
will start by ramping up to the reference.
Description of choice:
Set the necessary time before commencing
to accelerate.
121 Start function
(START FUNCTION)
Value:
DC hold during start delay time
(DC HOLD/DELAY TIME) [0]
DC brake during start delay time
(DC BRAKE/DELAY TIME) [1]
✭
Coasting during start delay time
(COAST/DELAY TIME)
[2]
✭
= 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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