current or torque limit or handle high loads at low frequencies in normal operation. An
example of a situation when the bit should not be used is operation against a locked rotor.
The bit B14 defines the reaction of the ramp output during the limit control functions. By
default, the limit controls have no effect on the ramp output. This causes the motor to
accelerate with maximum torque (against the current limit) to the speed reference when the
limit control deactivates.
By activating bit B14, the ramp output follows the actual frequency/speed with a defined gap.
Thus, when the limit control deactivates, the motor accelerates to the speed reference with
the defined ramp time. The default value of the gap frequency is 3.0 Hz.
P3.1.6.8 SPEED CONTROL GAIN (ID 1733)
The speed controller is always active in advanced sensorless control. Depending on the
desired response and the total inertia, it is possible that the speed controller requires some
tuning.
P3.1.6.9 SPEED CONTROL TIME (ID 1734)
The speed controller is always active in advanced sensorless control. Depending on the
desired response and the total inertia, it is possible that the speed controller requires some
tuning.
P3.1.6.14 FLUX REFERENCE
Use this parameter to adjust the flux reference. The value 100% means a nominal flux.
10.3
START/STOP SETUP
You must give the start and stop commands differently in each control place.
REMOTE CONTROL PLACE (I/O A)
Use the parameters P3.5.1.1 (Control signal 1 A), P3.5.1.2 (Control signal 2 A) and P3.5.1.3
(Control signal 3 A) to make a selection of digital inputs. These digital inputs control the
start, stop and reverse commands. Then make a selection of a logic for these inputs with
P3.2.6 I/O A Logic.
REMOTE CONTROL PLACE (I/O B)
Use the parameters P3.5.1.4 (Control signal 1 B), P3.5.1.5 (Control signal 2 B) and P3.5.1.6
(Control signal 3 B) to make a selection of digital inputs. These digital inputs control the
start, stop and reverse commands. Then make a selection of a logic for these inputs with
P3.2.7 I/O B Logic.
LOCAL CONTROL PLACE (KEYPAD)
The start and stop commands come from the keypad buttons. The direction of the rotation is
set with parameter P3.3.1.9 Keypad direction.
REMOTE CONTROL PLACE (FIELDBUS)
Start, stop and reverse commands come from the fieldbus.
PARAMETER DESCRIPTIONS
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