34
Multi-Speed Select ~Binary Operation
The inverter can store up to 16 different target
frequencies (speeds) that the motor output uses for
steady-state run condition. These speeds are accessible
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 six 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
–CF4 functions can
change the motor speed in real time.
NOTE
: Speed 0 depends on
parameter value.
Option
Code
Terminal
Symbol
Function Name
State
Description
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
CF2
Multi-speed Select,
Bit 1
ON
Binary encoded speed select, Bit 1, logical 1
OFF
Binary encoded speed select, Bit 1, logical 0
CF3
Multi-speed Select,
Bit 2
ON
Binary encoded speed select, Bit 2, logical 1
OFF
Binary encoded speed select, Bit 2, logical 0
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
Valid for inputs:
~
Example (some CF inputs require input
configuration; some are default inputs):
See I/O specs on
page 23, 24.
Required settings
,
=
,
to
Notes:
When programming the multi-speed settings, be
sure to press the SET key each time and then set
the next multi-speed setting. Note that when the
key is not pressed, no data will be set.
When a multi-speed setting more than 50Hz
(60Hz) is to be set, it is necessary to program the
maximum frequency
high enough to allow
that speed
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
Speed
0th
4th
6th
1st
2nd
5th
7th
3rd
1
0
1
0
1
0
1
0
[CF1]
[CF2]
[CF3]
[FW]
CF4
CF3
CF2
CF1
7
6
5
4
3
2
1
L
P24
PLC
