Using Intelligent Input Terminals
Oper
ations
and Monitor
ing
4–10
Multi-Speed Select
The inverter can store up to 16 different target
frequencies (speeds) that the motor output uses for
steady-state run condition. These speeds are acces-
sible through programming four of the intelligent
terminals as binary-encoded inputs CF1 to CF4 per
the table to the right. These can be any of the five
inputs, and in any order. You can use fewer inputs
if you need eight or fewer speeds.
Note:
When choosing a subset of speeds to use,
always start at the top of the table, and with the
least-significant bit: CF1, CF2, etc.
The example with eight speeds in the figure below
shows how input switches configured for CF1–CF3
functions can change the motor speed in real time.
NOTE:
Speed 0 is set by the A_20
parameter value.
Multi-
speed
Input Function
CF4
CF3
CF2
CF1
Speed 0
0
0
0
0
Speed 1
0
0
0
1
Speed 2
0
0
1
0
Speed 3
0
0
1
1
Speed 4
0
1
0
0
Speed 5
0
1
0
1
Speed 6
0
1
1
0
Speed 7
0
1
1
1
Speed 8
1
0
0
0
Speed 9
1
0
0
1
Speed 10
1
0
1
0
Speed 11
1
0
1
1
Speed 12
1
1
0
0
Speed 13
1
1
0
1
Speed 14
1
1
1
0
Speed 15
1
1
1
1
[CF1]
[CF2]
[CF3]
[FWD]
t
Speed
0th
4th
6th
1st
2nd
5th
7th
3rd
1
0
1
0
1
0
1
0
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
02
CF1
Multi-speed Select,
Bit 0 (LSB)
ON
Binary encoded speed select, Bit 0, logical 1
OFF
Binary encoded speed select, Bit 0, logical 0
03
CF2
Multi-speed Select,
Bit 1
ON
Binary encoded speed select, Bit 1, logical 1
OFF
Binary encoded speed select, Bit 1, logical 0
04
CF3
Multi-speed Select,
Bit 2
ON
Binary encoded speed select, Bit 2, logical 1
OFF
Binary encoded speed select, Bit 2, logical 0
05
CF4
Multi-speed Select,
Bit 3 (MSB)
ON
Binary encoded speed select, Bit 3, logical 1
OFF
Binary encoded speed select, Bit 3, logical 0
