Hitachi SJ7002 Series Instruction Manual page 127

3–44
"B" Group: Fine-Tuning Functions
Window
Comparators
Func.
Code
B060 [O] input maximum limit level of window comparator
B061 [O] input minimum limit level of window comparator
B062 [O] input hysteresis width of window comparator
B063 [OI] input maximum limit level of window comparator
B064 [OI] input minimum limit level of window comparator
B065 [OI] input hysteresis width of window comparator
B066 [O2] input maximum limit level of window comparator
B067 [O2] input minimum limit level of window comparator
B068 [O2] input hysteresis width of window comparator
B070 [O] input disconnect threshold
B071 [OI] input disconnect threshold
B072 [O2] input disconnect threshold
Miscellaneous
Functions
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The window comparator function controls digital outputs based on the comparison of analog
input values to user-defined upper and lower limits.
Name/
Description
SRW OPE
—
no
—
no
—
no
B083: 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 faint, high-pitched sound
you hear when the inverter is in Run Mode is characteristic of switching power supplies in
general. The carrier frequency is adjustable from 500 Hz to 15 kHz (the upper limit varies,
depending on the inverter rating). The audible sound decreases at the higher frequencies, but
RFI noise and leakage current may be increased. Refer to the specification derating curves in
Chapter 1 to determine the maximum allowable carrier frequency setting for your particular
inverter and environmental conditions.
NOTE: When the inverter is in sensorless vector mode, use B083 to set the carrier frequency
greater than 2.1 kHz for proper operation.
NOTE: The carrier frequency setting must stay within specified limits for inverter-motor
applications that must comply with particular regulatory agencies. For example, a European
CE-approved application requires the inverter carrier to be less than 5 kHz.
Keypad
Range and Settings
0. to 100. (%)
Lower limit = B061 + B062 x 2
0. to 100. (%)
Lower limit = B060 – B062 x 2
0. to 10. (%)
Lower limit = B061 – B062 x 2
0. to 100. (%)
Lower limit = B064 + B066 x 2
0. to 100. (%)
Lower limit = B063 – B066 x 2
0. to 10. (%)
Lower limit = B063 – B064 x 2
–100. to 100. (%)
Lower limit = B067 + B068 x 2
–100. to 100. (%)
Lower limit = B066 – B068 x 2
0. to 10. (%)
Lower limit = B066 – B067 x 2
— 0 to 100 (%)
255
Ignore setting
— 0 to 100 (%)
255
Ignore setting
— 0 to 100 (%)
127
Ignore setting
Defaults Run
Mode
xFE2 xFU2 xFF2
Edit
(EU) (USA) (Jpn) Lo Hi
✘ ✔
100 100 100
✘ ✔
0 0 0
✘ ✔
0 0 0
✘ ✔
100 100 100
✘ ✔
0 0 0
✘ ✔
0 0 0
✘ ✔
100 100 100
✘ ✔
-100 -100 -100
✘ ✔
0 0 0
✘ ✔
255 255 255
✘ ✔
✘ ✔
255 255 255
✘ ✔
✘ ✔
127 127 127
✘ ✔