Hitachi SH1-007H - Page 71

4-28
Chapter 4
For parameter configuration
[bb-24] to [bb-42]
Restart mode after instantaneous power
failure/under-voltage error
Code/Name
Range (unit)
Initial
value
bb-24 Restart mode selection after
instantaneous power
failure/under-voltage error
*1)
01
bb-25 Instantaneous power failure
allowed time
0.3 to 25.0(s)
1.0
bb-26 Retry wait time after
instantaneous power
failure/under-voltage error
0.3 to
100.0(s)
0.3
bb-27 Enable instantaneous power
failure/ under-voltage trip while in stop
status
00(Disable)/
01(Enable)/
02(Disable at
Stop/Decel. stop)
00
bb-28 Restart mode selection after
an overcurrent error
*1)
01
bb-29 Retry wait time after an
overcurrent error
0.3 to
100.0(s)
0.3
bb-30 Restart mode selection after
an overvoltage error
*1)
01
bb-31 Retry wait time after an
overvoltage error
0.3 to
100.0(s)
0.3
*1) 00(Restart at 0Hz)/01(Restart with matching frequency)/02(Restart with active
frequency matching)/03(Detect speed)/04(Decelerate and stop with matching
frequency and then trip)
・Regarding the restart, after the waiting time is completed the selected restart
method is carried out.
Restart mode after FRS/RS
Code/Name
Range (unit)
Initial
value
bb-40
Restart mode after FRS release
00(Restart at 0Hz)/
01(Restart with matching
frequency)/
02(Restart with active
frequency matching)/
03(Detect speed) *2)
00
bb-41
Restart mode after RS release
00
*2) This function requires encoder feedback to the P1-FB option or to the input
terminals [A]/[B] assigned 103[PLA]/104[PLB].
・When using input terminal 032[FRS] and 028[RS], restart mode can be selected.
・By [bb-40], input terminal 032 [FRS] Free run ON and restart operation
after free run at stop are selected.
・[bb-41] selects not only the operation after input terminal 028[RS] reset, but also
the restart operation after reset by power supply shutdown and the restart
operation after reset release at trip.
・When the input terminal 035[CS] commercial power supply change is turned ON,
the inverter will be in free running state, and restart with matching frequency
will be performed after [bb-26] time has elapsed.
For more information, Please contact your supplier or local Hitachi
inverter sales office.
Minimum level of frequency matching
Code/Name
Range (unit)
Initial value
bb-42 Frequency
matching minimum restart
frequency
0.00 to 590.00(Hz)
0.00
・The matching frequency function adopts the motor frequency for a
shockless start-up.
・If at the restart the frequency is under the [bb-42] frequency, a 0Hz restart
will be used instead.
[bb-43] to [bb-64]
Active frequency matching
Code/Name
Range (unit)
Initial value
bb-43 Active frequency
matching restart level
Inverter rated
current
×(0.2 to 2.0)(A)
Inverter
rated
current×1.0
bb-44 Active frequency
matching restart
constant(speed)
0.10 to 30.00(s)
0.50
bb-45
Active frequency matching
restart constant (voltage)
0.10 to 30.00(s)
0.50
bb-46
OC-supress level at active
frequency matching
Inverter rated
current
×(0.0 to 2.0)(A)
Inverter
rated current
× 1.0
bb-47 Active frequency
matching restart speed
selection
00(Output
frequency at
shut down)/
01(Maximum
frequency)/
02(Setting
frequency)
00
bb-50 Frequency matching
filter gain *3)
0 to 1000(%)
50
*3) [bb-50] is a parameter added to Ver2.03 or later.
・If the actual rotation of the motor does not match the reference
frequency, this function is a restart method that lowers the starting
voltage so that the output current does not exceed [bb-43] and reduces
the reference frequency to match the motor speed.
Overcurrent level
Code/Name
Range (unit)
Initial value
bb160 Over current
detection level, 1st-motor
Inverter rated ND
current × (0.2 to 2.2)
(A)
Inverter ND
rated current
× 2.2(A)
・The motor protection level for overcurrent can be set.
・In the case of a permanent magnet motor, set this parameter lower
than the motor demagnetizing level.
Overvoltage warning
Code/Name
Range (unit)
Initial value
bb-61 Power supply over
voltage selection
00(Warning)/
01(Error)
00
bb-62 Power supply over
voltage level setting
(400V Class)
600.0～820.0(V)
(400V Class)
780.0
・When the power supply suffers an overvoltage and if the DC bus
voltage is higher than the value in [bb-62], a warning is issued in
accordance with [bb-61].
・If [bb-61] is 01, the output terminal 081 [OVS]"Overvoltage power
Supply" signal turns on and trips with [E015] error.
If [bb-61] is 00, only the output terminal 081[OVS] signal is ON.
Selection of Ground fault detection
Code/Name
Range (unit)
Initial value
bb-64 Detect ground fault
selection
00(Disable)/
01(Enable)
01
・Ground fault detection enable/disable is selectable.
Retry wait time
Free-run
Primary
cut off
Output
frequency(solid) and
Output voltage(dotted)
Motor speed
Setting
frequency [bb-42]
Start with
matching frequency
Output
current
Active frequency
matching restart
level [bb-43]
Frequency
[bb-47]
Deceleration time
[bb-44]
Setting time [bb-45]
(Note)
[bb-44] and [bb-45]
are the frequency
deceleration time and
voltage increase time
from 0Hz to the
maximum frequency.
Retry wait timeFW
Free-run (FRS)
Primary
cut off
Inverter
output
Motor speed
Lower limit
[bb-42]
Restart with matching
frequency