Fuji Electric frenic mini series, User Manual

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9.2 Details of Function Codes
9-49
Chap. 9
FUNCTI
ON C
O
DE
S
H07 Gradual Acceleration/Deceleration
Data Function
0 Disable: Linear
1 S-curve (weak)
2 S-curve (strong)
Specifies the acceleration and deceleration patterns
(output frequency patterns).
3 Curvilinear
Linear acceleration/deceleration
The inverter runs the motor with the constant acceleration and deceleration.
S-curved acceleration/deceleration
To reduce the impact on the inverter
driven motor during acceleration/
deceleration, the inverter gradually
accelerates/decelerates the motor during
both the acceleration/ deceleration
zones.
Two frequencies can be selected for S-
curved acceleration/deceleration 5%
(weak) or 10% (strong) of the
maximum output frequency. The four
centers of S-curves are not affected by
this selection. Note
the set
acceleration/deceleration time defines
the linear acceleration/ deceleration in
the zones, so that the actual zone
exceeds the set zone in this case. Zones
are defined in units of time. Refer to the
figure at right.
Curvilinear acceleration/deceleration
The inverter drives the motor to output
the maximum performance, with the
following acceleration/deceleration pat-
terns:
- In the zone under the base frequency,
linear acceleration/deceleration of
constant torque output for the motor
- In the zone above the base frequency,
speed two times the base frequency
and acceleration/deceleration half of
the base frequency
Set the acceleration/deceleration time giving due consideration to the load torque.
Refer to Chapter 7 "SELECTING OPTIMAL INVERTER MODEL" for details.