Danfoss VLT DMS 300 Manual page 116

135 U/f-ratio
(U/F RATIO)
Value:
0.00 - 20.00 V/Hz
Function:
This parameter enables a shift in the ratio between
output voltage (U) and output frequency (f) linearly,
so as to ensure correct energizing of the motor and
thus optimum dynamics, accuracy and efficiency.
The U/f-ratio only affects the voltage characteristic
if a selection has been made of Constant torque
[1] parameter 101 Torque characteristic.
Description of choice:
The U/f-ratio is only to be changed if it is not
possible to set the correct motor data in parameter
102-109. The value programmed in the factory
settings is based on idle operation.
136 Slip compensation
(SLIP COMP.)
Value:
-500 - +500% of rated slip compensation
Function:
Slip compensation is calculated automatically, on
the basis of such data as the rated motor speed
n . In this parameter, the slip compensation can be
M,N
fine-tuned, thereby compensating for tolerances on
the value for n . Slip compensation is only active if
M,N
a selection has been made of Speedregulation, open
loop [0] in parameter 100 Configuration and Constant
torque [1] in parameter 101 Torque characteristic.
Description of choice:
Key in a % value.
137 DC hold voltage
(DC HOLD VOLTAGE)
Value:
0 - 100% of max. DC hold voltage
Function:
This parameter is used to keep the motor
(holding torque) at start/stop.
= factory setting. () = display text [] = value for use in communication via serial communication port
116
Description of choice:
This parameter can only be used if a selection has
been made of DC hold in parameter 121 Start
function or 122 Function at stop . To be set as
Depends on unit
a percentage value of the max. DC hold voltage,
which depends on the choice of motor.
138 Brake cut out value
Value:
Function:
Here you can select the frequency at which the external
brake is released, via the output defined in parameter
323 Relay output 1-3 or 341 Digital output, terminal
46 (optionally also terminal 122 and 123).
Description of choice:
Set the required frequency.
139 Brake cut in frequency
100%
Value:
Function:
Here you can select the frequency at which the external
brake is activated; this takes place via the output
defined in parameter 323 Relay output 1-3 or 341
Digital output terminal 46 (Optionally also 122 and 123).
Description of choice:
Set the required frequency.
140 Current, minimum value
Value:
Function:
0%
This is where the user selects the minimum motor
current running for the mechanical brake to be
released. Current monitoring is only active from stop
until the point when the brake is released.
Decentral Solutions
(BRAKE CUT OUT)
0.5 - 132.0/1000.0 Hz
(BRAKE CUT IN)
0.5 - 132.0/1000.0 Hz
(CURRENT MIN VAL)
0 % of Inom - 100 % of Inom
MG.90.F2.22 - VLT is a registered Danfoss trademark
3.0 Hz
3.0 Hz
0 %