Hitachi Sj7002 Owners Manual

“B” Group: Fine-Tuning Functions
Configuring Drive Parameters
3–38
Software Lock 
ModeThe software lock function keeps personnel fro m accidentally changing parame ters in the 
inverter memory. Use B031 to select from various protection levels.
The table below lists all combinati ons of B031 option codes and the 
ON/OFF state of the [SFT] input. Each Check ✔  or Ex ✘ indicates 
whether the corresponding parameter(s ) can be edited. The Standard 
Parameters column below lists Low and High level access for...

SJ7002 Inverter
Configuring Drive Parameters
3–39
Miscellaneous 
SettingsThe miscellaneous settin gs include scaling factors, initialization mode s, and others. This 
section covers some of th e most important settings you may need to configure.
Function Display 
SettingsThe inverter has the (optional) capability to su ppress the display and editing of certain parame-
ters. Use B037 to select the display options. The  purpose of this feature is to hide particular 
secondary parameters that become unused...

“B” Group: Fine-Tuning Functions
Configuring Drive Parameters
3–40
A002 01, 03, 04,  05B087 Stop key function
A019 00 A028 – A035 Multi-speed function
C001 – C008 02, 03, 04,  05
Function 
CodeDataResulting Non-displayed 
Functions (when B37 = 01)Notes
A044, A244 02 B100 – B113 Control methods
A051 01 A052 – A059 DC braking
A071 01 A072 – A076, C044 PID function
A094 01 A095 – A096 2-stage adjustable frequency
A294 01 A0295 – A296
B013, B213,  B313 02 B015 – B020
Electric thermal characteris-
tic
B021...

SJ7002 Inverter
Configuring Drive Parameters
3–41
B098 01, 02 B099, C085 Thermistor function
B050 01 B051 – B054 Instantaneous power failure
B120 01 B121 – B126 External brake control
Function 
CodeDataResulting Non-displayed 
Functions (when B37 = 01)Notes
C021 – C025,  C026 02, 06 C042, C043 Frequency arrival signal
03 C040, C041 Overload advance notice
07 C055 – C058 Over-torque
21 C063 Zero-speed detection signal
24, 25 C045, C046 Frequency arrival signal 26 C011 Overload advance notice 2
H002 00...

“B” Group: Fine-Tuning Functions
Configuring Drive Parameters
3–42
Controlled Deceleration at Power Loss  – When enabled, this feature permits the inverter to 
control final motor deceleration  upon loss of inverter input power. First, you must make a 
wiring change to the inverter. See  “
Optional Controlled Decel and Alarm at Power Loss” on 
page 4–4 for complete instructions including wiring  and signal timing diagrams for using the 
controlled decelera tion at power loss feature.
After making the...

SJ7002 Inverter
Configuring Drive Parameters
3–43
 If an instantaneous power failure has occurred while the inverter is operating the motor and the output voltage falls to the  DC bus voltage trigger level dur ing power loss (b051) or less, 
the inverter reduces the output frequency by the initial output frequency decrease during 
power loss (b054) once, and then decelerates the motor for th e deceleration time setting 
during power loss (b053).
 If the voltage increases to an overvoltage le vel...

“B” Group: Fine-Tuning Functions
Configuring Drive Parameters
3–44
Window 
ComparatorsThe window comparator function controls digi tal outputs based on the comparison of analog 
input values to user-defined upper and lower limits.
Miscellaneous 
FunctionsB083: Carrier frequency adjustment  – The internal switching frequency  of the inverter 
circuitry (also called the  chopper frequency). It is called the carrier frequency because the 
lower AC output frequency of the inverter “rides” the carrier. The...

SJ7002 Inverter
Configuring Drive Parameters
3–45
B084, B085: Initialization codes –  These functions allow you to restore the factory default 
settings. Please refer to “
Restoring Factory Default Settings” on page 6–16.
B086: Frequency display scaling –  You can convert the output frequency monitor on D001 to 
a scaled number (e ngineering units) monitore d at function D007. For example, the motor may 
run a conveyor that is monitored in fe et per minute. Use this formula:    
B091/B088: Stop Mode /...

“B” Group: Fine-Tuning Functions
Configuring Drive Parameters
3–46
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 3–30), and inverter trip events in 
general (see  “
Miscellaneous  Functions” on page 3–62). If all free-run stop behavior is impor-
tant to your applicat ion (such as HVAC), be sure to  configure each event accordingly.
Some additional parameters further configure  all instances of a...

SJ7002 Inverter
Configuring Drive Parameters
3–47
B090: Dynamic braking usage ratio –  This parameter limits the amount of time the inverter 
can use the dynamic braking accessory device with out entering the Trip Mode. Please refer to 
“
Dynamic Braking” on page 5–6 for more information on  dynamic braking accessories.
NOTE: When cooling fan control is enabled (B092=01) the inverter always turns the fan ON 
for five minutes immediately after  powerup. This will cool the inverter in case the inverter /...