Chapter 4 Software index
4-10
A04 Acceleration time 1 (s): 00.1 – 999
A05 Deceleration time 1 (s): 00.1 – 999
Formula for acceleration/deceleration time:
Denominator is based on factory setting in Sensorless Vector control
a) Motor rated frequency (Sensorless Vector control).
b) Max output frequency (V/F control).
a)
Set frequency
Set frequency
Acceleration time = A04 ×
Deceleration time =A05 × vector
b11 (rated frequency) b11 (rated frequency)
b)
Set frequency
Set frequency
Acceleration time
= A04 ×
Deceleration time
= A05 ×
V/F
A09 (Max output frequency)
A09 (Max output frequency)
A06: Control mode
Vector control or V/F control
A06 = 000:
iDrive
operates in Sensorless Vector mode. Dynamic response to changing load is
improved, motor starting torque increased and low-speed operation is more stable. For better S/V
control it is also necessary to input correct values into parameters A08, A09, b09 – b16.
A06 = 001:
iDrive
operates in V/F mode. Standard performance for fans, pumps, and other non-
demanding (non-dynamic) loads.
A07: V/F Preset patterns 1 – 7
A07 = 007.
Selects user configurable V/F pattern by setting parameters A09, b04 – b08.
Care should be taken when using this feature as incorrect setting of these parameters may cause
motor over-heating or incorrect operation.
b04
(Vmax)
b06
(Vmid)
b08
(Vmin)
b07 b05 A09
