5-18
• If you choose S-curve acceleration/deceleration or curvilinear acceleration/
deceleration in A
acceleration/decele
cceleration/Deceleration Pattern (H07), the actual
ration times are longer than the specified times. Refer to the
description of H07 for details.
• Specifying an improperly short acceleration/deceleration time may activate the
current limiter, torque limiter, or anti-regenerative control, resulting in a longe
r
acceleration/deceleration time than the specified one.
• Acceleration time 1 (F07, F08) and deceleration time 1 (E10, E11) is switched by
terminal command
RT1
assigned to any of the digital input terminals with any of
function codes E01 through E05.
• Acceleration/deceleration time 1 (F07/F08) and acceleration/deceleration time 2
(E10/E11) are switched by terminal command
RT1
assigned to any of the digital
input terminals with any of function codes E01 through E05.
F09
F37
Torque Boost 1
Load Selection/Auto Torque Boost/Auto Energy Saving Operation 1
F37 spec
s V/f pattern, torque boost type, and auto energy saving operation for optimi ng
aracteristics of the load. F09 specifies the type of
t starting torque.
Data for
F37
V/f pattern
Torque boost
(F09)
Auto energy
saving
Applicable load
ifie
zi
the operation in accordance with the ch
torque boost in order to provide sufficien
0
Variable
torque V/f
pattern
Variable torque load increasing in
proportion to square of speed
(General purpose fans and pumps)
1
Torque
boost
specified by
F09
Constant torque load
2
Linear
V/f pattern
Auto torque
boost
Disable
Constant torque load
(To be selected if a motor may be
over-excited at no load.)
3
Variable
torque V/f
pattern
Variable torque load increasing in
proportion to square of speed
(General purpose fans and pumps)
4
Torque
boost
specified by
F09
Constant torque load
5
Linear
V/f pattern
Auto torque
boost
Enable
Constant torque load
(To be selected if a motor may be
over-excited at no load.)
N
ote:
If
+ acceleration toque" is more than 50% of the rated torque, it
is
ct the linear V/f pattern (factory default).
V/f cha
a required "load torque
recommended to sele
racteristics
The FRENIC-Multi series of inverters offers a variety of V/f patterns and torque boosts, which
include V/f patterns suitable for variable torque load such as general fans and pumps or for
special pump load requiring high starting torque. Two types of torque boost are available:
manual and automatic.
Variable torque V/f pattern (F37 = 0)
Linear V/f pattern (F37 = 1)