Fuji Electric Europe GmbH
Page 16 of 26
8.3
Acceleration/deceleration ramps
In the following example of figure 6, an example of speed profile is shown:
HIGH speed
Speed
ON
FWD
SS1
ON
ON
Time
ON
EN1, EN2
ON
MC control
LOW speed
F07
F08
E11
E10
Soft start speed
Figure 6: Speed profile example
9
MAIN FUNCTIONS
9.1
Magnetic contactors control
Magnetic contactors which interrupts the flowing of current between the mains and the motor, has to be
opened after current flow is stopped. It is to increase lifetime of inverter and magnetic contactors.
FUJI
-
HYDRAULIC includes an output function called AX. This output function changes the state from ON
to OFF when inverter has switched off IGBT’s gate circuit. It ensures that magnetic contactors will open after
current flow is finished.
In order to have AX function active, vale “15” has to be set to any of the inverter’s outputs. For additional
information check table 11.
Function
Value
Symbol
E20 ~ E21 (Y1 ~ Y4), E24 (Y5), E27 (30
-
A
-
B
-
C)
15
AX
Table 11: Magnetic contactors control function
9.2
Soft start
In order to improve the comfort at starting, soft start parameters can be adjusted as shown in table 12:
Function
Recommended setting
Description
C16 / C17 / C18 / C19
10 Hz
Soft start speed
E10
15 s
Soft start acc. ramp
U04
2.5 s
Soft start holding time
E04
1002
/SS4
U00
1
Additional Soft start
setting
U01
72
U02
6000
U71
1
U72
1
U81
3
U82
4
Table 12: Soft start parameters
