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Using Intelligent Input Terminals
Operations
and Monitoring
4–12
Multi-Speed
Select
The inverter can store up to 16 different fixed target frequencies (speeds) in parameters A020
to A035. Binary inputs select the speed through four of the intelligent terminals configured as
binary-encoded inputs CF1 to CF4 per the table. 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.
Multi-
speed
Input Function
Multi-
speed
Input Function
CF4 CF3 CF2 CF1 CF4 CF3 CF2 CF1
Speed 0 0000Speed 8 1000
Speed 1 0001Speed 9 1001
Speed 2 0010Speed 101010
Speed 3 0011Speed 111011
Speed 4 0100Speed 121100
Speed 5 0101Speed 131101
Speed 6 0110Speed 141110
Speed 7 0111Speed 151111
0th
CF1
CF2
CF3
1st
2nd
6th
5th
4th
3rd
7th
Speed
Switches
Fwd Run
t