Fuji Electric FRENIC-HVAC User Manual page 363

F07, F08 Acceleration Time 1, Deceleration Time 1
F07 specifies the acceleration time, the length of time the frequency increases from 0 Hz to
the maximum frequency. F08 specifies the deceleration time, the length of time the frequency
decreases from the maximum frequency down to 0 Hz.
- Data setting range: 0.00 to 3600.00 (s)
Acceleration/deceleration time

Acceleration/
deceleration time
Acceleration/
deceleration time 1
Acceleration/
deceleration time 2
Acceleration/
deceleration time 3
Acceleration/
deceleration time 4
Force to stop
Acceleration/Deceleration pattern (H07)

H07 specifies the acceleration and deceleration patterns (patterns to control output
frequency).
Data Acceleration/
for deceleration
H07 pattern
Linear
0
S-curve
(Weak)
1
S-curve
(Strong)
2
Curvilinear
3
E10, E12, E14 (Acceleration Time 2, 3 and 4)
E11, E13, E15 (Deceleration Time 2, 3 and 4)
Function code
Switching factor of acceleration/deceleration time
ACC DEC
( Refer to the descriptions of E01 to E07.)
time time
RT2 RT1
F07 F08
OFF OFF
E10 E11 OFF ON
E12 E13 ON OFF
E14 E15 ON ON
If terminal command STOP (data = 30) is turned OFF, the
inverter decelerates to a stop with the deceleration time
- H56
specified by H56. After that, the inverter displays alarm Er6
and enters an alarm state.
The inverter runs the motor with the constant acceleration and
deceleration.
To reduce an impact that
acceleration/deceleration
would make on the machine,
the inverter gradually
accelerates or decelerates the
motor in both the starting
and ending zones of
acceleration or deceleration.
Acceleration/deceleration is linear below the base frequency
(constant torque) but it slows down above the base frequency to
maintain a certain level of load factor (constant output).
This acceleration/deceleration pattern allows the motor to accelerate
or decelerate with the maximum performance of the motor.
6-53
6.3 Details of Function Codes
H07 (Acceleration/Deceleration Pattern)
H56 (Deceleration Time for Forced Stop)
The combinations of ON/OFF states of
the two terminal commands RT2 and
RT1 offer four choices of acceleration/
deceleration time 1 to 4. (Data = 4, 5)
If no terminal command is assigned,
only the acceleration/deceleration time 1
(F07/F08) is effective.
Motion
Weak:
The acceleration/deceleration rate to
be applied to all of the four
inflection zones is fixed at 5% of the
maximum frequency.
Strong:
The acceleration/deceleration rate to
be applied to all of the four
inflection zones is fixed at 10% of
the maximum frequency.
Function
code
-
-
-
-