Table 213: Multipurpose control application
Data Value Unit Scale
Reference Speed reference % 0.01%
ControlWord
Start/Stop command
Fault reset command
- -
Process Data IN1 Torque reference % 0.1%
Process Data IN2 Free analogue input % 0.01%
Process Data IN3 Adjust input % 0.01%
PD3 – PD8 Not used - -
Table 214: PID control and Pump and fan control applications
Data Value Unit Scale
Reference Speed reference % 0.01%
ControlWord
Start/Stop command
Fault reset command
- -
Process Data IN1 Reference for PID controller % 0.01%
Process Data IN2 Actual value 1 to PID controller % 0.01%
Process Data IN3 Actual value 2 to PID controller % 0.01%
PD4 – PD8 Not used - -
8.8 CLOSED LOOP PARAMETERS (IDS 612 TO 621)
Select the Closed loop control mode by setting value 3 or 4 for parameter ID600.
Closed loop control mode (see Chapter 600 Motor control mode 234567 (2.6.1)) is used when
enhanced performance near zero speed and better static speed accuracy with higher speeds
are needed. Closed loop control mode is based on "rotor flux oriented current vector
control". With this controlling principle, the phase currents are divided into a torque
producing current portion and a magnetizing current portion. Thus, the squirrel cage
induction machine can be controlled in a fashion of a separately excited DC motor.
PARAMETER DESCRIPTIONS VACON · 373
24-HOUR SUPPORT +358 (0)201 212 575 · EMAIL: VACON@VACON.COM
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