Hitachi SJ300 Series Instruction Manual page 153

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.
Input Function
Multi-
speed
SF7 SF6 SF5 SF4 SF3 SF2 SF1
Speed 0 0 0 0
Speed 1 — — —
Speed 2 — — —
Speed 3 — — —
Speed 4 — — —
Speed 5 — — 1
Speed 6 — 1 0
Speed 7 1 0 0
The following table lists the option codes for assigning [SF1 to [SF7] to the intelligent inputs.
Opt.
Code
32
33
34
35
36
37
38
Valid for
inputs:
Required
settings:
Notes:
• 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.
0 0 0 0
— — — 1
— — 1 0
— 1 0 0
Switches
1 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
Symbol Function Name
SF1 Bit-level speed select 1
SF2 Bit-level speed select 2
SF3 Bit-level speed select 3
SF4 Bit-level speed select 4
SF5 Bit-level speed select 5
SF6 Bit-level speed select 6
SF7 Bit-level speed select 7
C001, C002, C003, C004,
C005, C006, C007, C008
F001, A020 to A035
A019=01
Speed
7th
6th
5th
4th
3rd
2nd
1st
0th
SF1
SF2
SF3
SF4
SF5
SF6
SF7
Fwd Run
Description
Bit-level speed select, Bit 0
Bit-level speed select, Bit 1
Bit-level speed select, Bit 2
Bit-level speed select, Bit 3
Bit-level speed select, Bit 4
Bit-level speed select, Bit 5
Bit-level speed select, Bit 6
Example: (Requires input configuration—
see page 3–47. Jumper position shown is
for –xFU/-xFR models; for –xFE models,
see page 4–12.)
TH FW
P24 PLC
4–15
SJ300 Inverter
SF7 SF5 SF3 SF1
SF6 SF4 SF2
CM1
8 5 3 1
CM1
7 6 4 2