Hitachi L300P Series Instruction Manual page 148

4–14
Using Intelligent Input Terminals
Multi-
speed
SF7 SF6 SF5 SF4 SF3 SF2 SF1
Speed 0 0
Speed 1 —
Speed 2 —
Speed 3 —
Speed 4 —
Speed 5 —
Speed 6 —
Speed 7 1
The Bit Operation method of speed control uses up to five intelligent inputs to select any of up
to six speeds from a total of eight speeds. (At least two of the SF1–SF7 functions will be
unused, since there are only five inputs.) 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
0 0 0 0 0
— — — — —
— — — — 1
— — — 1 0
— — 1 0 0
— 1 0 0 0
1 0 0 0 0
0 0 0 0 0
The following table lists the option codes for assigning [SF1 to [SF7] to the intelligent inputs.
Opt.
Symbol Function Name
Code
32 SF1 Bit-level speed select 1
33 SF2 Bit-level speed select 2
34 SF3 Bit-level speed select 3
35 SF4 Bit-level speed select 4
36 SF5 Bit-level speed select 5
37 SF6 Bit-level speed select 6
38 SF7 Bit-level speed select 7
C001, C002, C003, C004,
Valid for
C005
inputs:
F001, A020 to A035
Required
A019=01
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.
Speed
5th
4th
3rd
2nd
1st
0
0th
1
Switches
0
SF1
0
SF2
0
SF3
0
SF4
0
SF5
0
Fwd Run
Note: Input functions SF6 and SF7 may be substituted
for any of SF1–SF5, to access Speed 7 or Speed 8.
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 3–43. Jumper position shown is
for –xFU/-xFR models; for –xFE models,
see page 4–11.)
See I/O specs
on page 4–8.
Description
SF5 SF3 SF1
SF4 SF2
TH FW
5 4 3 2
P24 PLC CM1
1