SJ700
2
Inverter
Oper
ati
ons
and Monitor
ing
4–17
Multi-Speed
Select, Bit-level
The Bit-level 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-
level 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.
Opt. Code
and
Symbol
32 = [SF1]
33 = [SF2]
34 = [SF3]
35 = [SF4]
35 = [SF5]
36 = [SF6]
37 = [SF7]
Valid for
Inputs
[1] to [8]
Required
Settings
F001, A020
to A035,
A019=01
Default
terminals
Requires
config.
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
Multi-
speed
Input Function
SF7
SF6
SF5
SF4
SF3
SF2
SF1
Speed 0
0
0
0
0
0
0
0
Speed 1
—
—
—
—
—
—
1
Speed 2
—
—
—
—
—
1
0
Speed 3
—
—
—
—
1
0
0
Speed 4
—
—
—
1
0
0
0
Speed 5
—
—
1
0
0
0
0
Speed 6
—
1
0
0
0
0
0
Speed 7
1
0
0
0
0
0
0
0th
SF1
SF2
SF3
3rd
4th
2nd
5th
1st
7th
6th
Speed
Inputs
Fwd Run
SF4
SF5
SF6
SF7