3–41

SJ300 Inverter

Miscellaneous functions, continued...

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.

B084, B085: Initialization codes – These functions allow you to restore the factory default settings. Please refer to “Restoring Factory Default Settings” on page 6–9.

B086: Frequency display scaling – You can convert the output frequency monitor on D001 to a scaled number (engineering units) monitored at function D007. For example, the motor may run a conveyor that is monitored in feet per minute. Use this formula:

Scaled output frequency (D007) = Output frequency (D001) ⋅ Factor (B086)

 

“B” Function

Run

 

Defaults

 

 

 

 

 

 

 

Mode

 

 

 

 

Units

SRW Display

 

 

 

 

 

 

 

Func.

 

 

Edit

–FE

–FU

 

–FR

Name

Description

 

 

 

 

Code

Lo Hi

(EU)

(US)

 

(JP)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B080

[AM] terminal analog

Adjust 8-bit gain to analog

✔ ✔

180

180

 

180

—

>b080 AM-MONITOR

 

meter adjustment

meter connected to terminal

 

 

 

 

 

 

ADJUST

180

 

 

 

 

 

 

 

 

 

 

 

[AM], range is 0 to 255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B081

[FM] terminal analog

Adjust 8-bit gain to analog

✔ ✔

60

60

 

60

—

>b081 FM-MONITOR

 

meter adjustment

meter connected to terminal

 

 

 

 

 

 

ADJUST

060

 

 

 

 

 

 

 

 

 

 

 

[FM], range is 0 to 255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B082

Start frequency adjust-

Sets the starting frequency

✘ ✔

0.50

0.50

 

0.50

Hz

>b082 fmin

 

ment

for the inverter output, range

 

 

 

 

 

 

F

00.50Hz

 

 

 

 

 

 

 

 

 

 

 

is 0.10 to 9.99 Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B083

Carrier frequency

Sets the PWM carrier (inter-

✘ ✔

5.0

5.0

 

5.0

kHz

>b083 CARRIER

 

setting

nal switching frequency)

 

 

 

 

 

 

F

05.0kHz

 

 

 

 

 

 

 

 

 

 

 

Range is 0.5 to 15.0 kHz, or

 

 

 

 

 

 

 

 

 

 

0.5 to 10 kHz when derated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B084

Initialization mode

Select the type of initializa-

✘ ✘

00

00

 

00

—

>b084 INITIAL

 

(parameters or trip

tion to occur, three option

 

 

 

 

 

 

MODE

TRP

 

 

 

 

 

 

 

 

 

 

history)

codes:

 

 

 

 

 

 

 

 

 

 

00 Trip history clear

 

 

 

 

 

 

 

 

 

 

01 Parameter initialization

 

 

 

 

 

 

 

 

 

 

02 Trip history clear and

 

 

 

 

 

 

 

 

 

 

parameter initialization

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameters

Drive Configuring