Table of Contents
Advertisement
5.3.5.3 Field converter
The default TPD32-EV converters are set to operate without Voltage control. The following settings must be taken
into consideration when a functioning in Voltage control is needed or when the field of the connected motor is
not power supplied via the converter.
All the settings described in this chapter must be carried out in disable condition (no voltage on terminal 12).
Selection of the functioning system
-
With a constant field current:
-
With Voltage control:
Field circuit not supplied by TPD32-EV Flux reg mode = External control
-
Setting the rated field current
-
Set the rated field current of the motor via the Motor nom flux parameter.
-
When the field motor current is substantially lower than the rated current of the field converter, adapt trough
the S14 dip switches the field converter. It must be configured according to the table 5.3.5.3.1 Via the Nom
flux curr parameter it is possible to select the new field rated current.
-
For fixed field current operation, if the actual motor (base) field current ≤ 10% of the maximum rating of
the field package it is required to calibrate the field current feedback scaling using dipswitch S14.
-
For weak field operation, also referred as "CEMF field control" or "crossover field control", if the top base
speed Motor nom flux ≤ 10% of the maximum rating of the field package it is required to calibrate the
field current feedback scaling using dipswitch S14.
Calibration to the exact field current setting is not required, as long as the above conditions are met.
Calibration is not required if the field control is provided by a separate field converter.
See the "Field current setting resistors" table in chapter "2.3.3 Output" on page 29.
Flux current min/max
-
Setting in LIMITS / Flux limits menu via the Flux current max and Flux current min parameters as a
percentage of Nom flux curr.
Flux reg mode = Constant current
Enable flux reg = Enabled
Flux reg mode = Voltage control.
In the CONFIGURATION menu set the max output
voltage via the Max out voltage parameter.
Enable flux reg = Enabled
Enable flux reg = Disabled
—————— Instruction manual ——————
125
Advertisement
Table of Contents
