Hitachi SJ7002 Series Instruction Manual page 129

3–46
"B" Group: Fine-Tuning Functions
[FW, RV]
Func. Name/
Code Description
B088 Restart mode after FRS
Selects how the inverter
resumes operation when
the free-run stop (FRS) is
cancelled
B089 Automatic carrier
frequency reduction
B090 Dynamic braking usage ratio
Selects the braking duty cycle for the dynamic braking resistor
(total brake % ON-time per 100 second interval)
B091 Stop mode selection
Selects how the inverter
stops the motor
B092 Cooling fan control
(see note below)
B095 Dynamic braking control OFF
Clearwater Tech - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.clrwtr.com - Email: info@clrwtr.com
NOTE: Other events can cause (or be configured to cause) a free-run stop, such as power loss
(see "Automatic Restart Mode and Phase Loss" on page
general (see "Miscellaneous Functions" on page
tant to your application (such as HVAC), be sure to configure each event accordingly.
Some additional parameters further configure all instances of a free-run stop. Parameter B003,
Retry Wait Time Before Motor Restart, sets the minimum time the inverter will free-run. For
example, if B003 = 4 seconds (and B091=01) and the cause of the free-run stop lasts 10
seconds, the inverter will free-run (coast) for a total of 14 seconds before driving the motor
again. Parameter B007, Restart Frequency Threshold, sets the motor frequency at which the
inverter will no longer resume and accelerate, instead resuming from 0 Hz (complete stop).
B091=01 Stop Mode = free-run stop
B088=00 Resume from 0Hz
Zero-frequency start
Motor
speed
Keypad
SRW OPE
00
ZST
0 1
fST
02
FIX
00
OFF
0 1
ON
00
DEC
0 1
FRS
00
OFF
0 1
ON
00
0 1
ON
STPOFF
02
ON
STPON
3–62). If all free-run stop behavior is impor-
B091=01 Stop Mode = free-run stop
B088=01
Motor
speed
[FW, RV]
t
Range and Settings
Restart from 0Hz
Restart from frequency detected from
actual speed of motor
Restart from active matching frequency
Disable
Enable
0.0 to 100.0 (%)
Set = 0.0 to disable dynamic braking
DEC (decelerate and stop)
FRS (free run to stop)
Fan always ON
Fan ON during RUN, OFF during STOP
Disable
Enable during RUN only
Enable always
3–30), and inverter trip events in
Resume from current speed
B003
Defaults
FEF2 FUF2 FF2
FE2 FU2 F2
(EU) (USA) (Jpn)
00 00 00
00 00 00
00 00 00
00 00 00
00 00 00
00 00 00
wait time
t
Run
Mode
Edit
Lo Hi
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