Hitachi SJ300 Series manual 153

4–15

SJ300 Inverter

The Bit Operation method of speed control uses up to seven intelligent inputs to select from up to eight speeds. Since the all-switches-OFF combination selects the first speed, you only need N-1 switches to select N speeds. With Bit Operation speed control, only one input is normally active at a time. If multiple switches are ON, the lower numbered input takes precedence (determines the speed). The table and figure below show how the input combinations work.

								Speed
								7th
Multi-			Input Function					6th
								5th
speed	SF7	SF6	SF5	SF4	SF3	SF2	SF1
								4th
								3rd
Speed 0	0	0	0	0	0	0	0
								2nd
Speed 1	—	—	—	—	—	—	1	1st
								0th
Speed 2	—	—	—	—	—	1	0
Speed 3	—	—	—	—	1	0	0	Switches
								SF1
Speed 4	—	—	—	1	0	0	0
								SF2
Speed 5	—	—	1	0	0	0	0
								SF3
Speed 6	—	1	0	0	0	0	0
								SF4
Speed 7	1	0	0	0	0	0	0
								SF5
								SF6

SF7

Fwd Run

The following table lists the option codes for assigning [SF1 to [SF7] to the intelligent inputs.

Opt.

Symbol

Function Name

Description

Code

32

SF1

Bit-level speed select 1

Bit-level speed select, Bit 0

33

SF2

Bit-level speed select 2

Bit-level speed select, Bit 1

34

SF3

Bit-level speed select 3

Bit-level speed select, Bit 2

35

SF4

Bit-level speed select 4

Bit-level speed select, Bit 3

36

SF5

Bit-level speed select 5

Bit-level speed select, Bit 4

37

SF6

Bit-level speed select 6

Bit-level speed select, Bit 5

38

SF7

Bit-level speed select 7

Bit-level speed select, Bit 6

Valid for

C001, C002, C003, C004,

Example: (Requires input configuration—

inputs:

C005, C006, C007, C008

see page 3–47. Jumper position shown is

for –xFU/-xFR models; for –xFE models,

Required

F001, A020 to A035

see page 4–12.)

SF7 SF5 SF3 SF1

settings:

A019=01

SF6 SF4 SF2

TH

FW

8

CM1

5

3

1

Notes:

P24

PLC

CM1

7

6

4

2

• When all [SFx] inputs are OFF, the speed is

set by default to the value in F001.

• When a multi-speed setting more than 50Hz(60Hz) is to be set, it is necessary to program the maximum frequency A004 high enough to allow that speed.

Operations Monitoring and