Goodrive270 series VFD for fan and pump Basic operation guidelines
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Function selection
of multifunction
digital input
terminals (S1–S4,
and HDIA)
36: Switch the running command channel to
keypad
37: Switch the running command channel to
terminal
38: Switch the running command channel to
communication
Used to set the parameter copy mode.
0: No operation
1: Upload parameters to the keypad
2: Download all parameters (including motor
parameters)
3: Download non-motor group parameters
4: Download motor group parameters
Note: After any operation among 1–4 is
completed, the parameter restores to 0. The
upload and download functions are not applicable
to group P29.
Range: 0x00–0x27
Ones place: Function of QUICK/JOG
0: No function
1: Jog
2: Reserved
3: Switch between forward and reverse rotating
4: Clear the UP/DOWN setting
5: Coast to stop
6: Switch command channels in sequence
7: Reserved
Tens place: Reserved
5.5.3 Vector control
AMs feature high order, nonlinearity, strong coupling and multi-variables, which increase difficulty to
control AMs during actual application. The vector control technology solves this situation as follows:
measures and controls the stator current vector of the AM, and then decomposes the stator current
vector into exciting current (current component that generates internal magnet field) and torque
current (current component that generates torque) based on field orientation principle, and therefore
controls the amplitude values and phase positions of the two components (namely, controls the stator
current vector of the AM) to realize decoupled control on exciting current and torque current, thus
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