Trane VarioTrane TR1 2800 Series, Руководство по эксплуатации

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133 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 kW) normally
require a high start voltage.
Description of choice:
The factory setting will be suitable for must applica-
tions, the value may need to be increase gradually for
high torque application.
134 Load compensation
Value:
0.0 - 300.0%
100.0%
Function:
In this parameter, the load characteristic is set. By in-
creasing the load compensation, the motor is given
an extra voltage and frequency supplement at in-
creasing loads. This is used e.g. in motors/applica-
tions 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 frequency converter
may cut out because of overcurrent.
Description of choice:
If the factory setting is not adequate, load compen-
sation must be set to enable the motor to start at the
given load.
30 TR1 2800 Series VFD
NOTICE
If the use of start voltage is exaggerated, this may lead
to over-energizing and overheating of the motor and the
frequency converter may cut out.
NOTICE
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 insta-
bility.
135 U/f-ratio
Value:
0.00 - 20.00 at Hz
Depends on unit
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] pa-
rameter 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
Value:
-500 - +500% of rated slip compensation
0%
Function:
Slip compensation is calculated automatically, on the
basis of such data as the rated motor speed n M,N. In
this parameter, the slip compensation can be fine-
tuned, thereby compensating for tolerances on the
value for n M,N. Slip compensation is only active if 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
Value:
0 - 100% of max. DC hold voltage
0%
Function:
This parameter is used to keep the motor (holding
torque) at start/stop.
Description of choice:
This parameter can only be used if a selection has
been made of
DC hold in parameter 121 Start func-
tion or 122 Function at stop . To be set as a percentage
value of the max. DC hold voltage, which depends on
the choice of motor.
Programming