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 mode).
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: Inverter operates in vector mode. Dynamic response to changing load is improved,
motor starting torque increased and low-speed operation is more stable. For good vector control it
is also necessary to input correct values into parameters A08, A09, b09 – b16.
A06 = 001: Inverter operates in V/F mode. Standard performance for fans, pumps, and other non-
demanding loads.
A07: Preset V/F 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)
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