Hitachi SJ100 Instruction Manual page 90

3–18
"A" Group: Standard Functions
Jump Frequencies – Some motors or machines exhibit resonances at particular
speed(s), which can be destructive for prolonged running at those speeds. The inverter
has up to three jump frequencies as shown in the graph. The hysteresis around the jump
frequencies causes the inverter output to skip around the sensitive frequency values.
Output
frequency
A 67
A 65
A 63
Func. Name /
Code SRW Display
A_63, Jump (center)
A_65, frequency setting
A_67
JUMP F1
JUMP F2
JUMP F3
A_64, Jump (hysteresis)
A_66, frequency width setting
A_68
JUMP W1
JUMP W2
JUMP W3
Jump frequencies
0
"A" Function
Description
Up to 3 output frequencies can
be defined for the output to
jump past to avoid motor
000.0Hz
resonances (center frequency)
000.0Hz
Range is 0.0 to 360.0 Hz
000.0Hz
Defines the distance from the
center frequency at which the
jump around occurs
00.50Hz
Range is 0.0 to 10.0 Hz
00.50Hz
00.50Hz
A 66
A 66
A 64
A 64
Frequency command
Run
Mode
–FE
Edit
(CE)
✘
0.0
0.0
0.0
✘
0.5
0.5
0.5
A 68
A 68
Hysteresis values
Defaults
–FU –FR
Units
(UL) (Jpn)
0.0 0.0 Hz
0.0 0.0
0.0 0.0
0.5 0.5 Hz
0.5 0.5
0.5 0.5