Introduction Parameter x.00
Parameter
description format
Keypad and
display
CT Modbus
RTU
User
programming
CT Soft Menu 0
Advanced parameter
descriptions
Menu 12
Commander SK Advanced User Guide 131
Issue Number: 2 www.controltechniques.com
These parameters and Pr 12.28 and Pr 12.29 define the parameters which are to be switched by the variable selector block. These can bit variables
or non bit variables but not a mixture of both. Also the output parameter programmed must be the same type as the destination parameter, if not they
will always read as zero. When programming a reference to a variable source select, if the reference is a percentage, then the variable source treats
the percentage as a whole number, e.g. 50.0% of reference = 50.0Hz.
The output of the variable select can be changed by the mode as in the following table:
Defines the destination parameters for the variable selector outputs. Only non-protected parameters can be programmed as a destination. If a non-
valid parameter is programmed, the output is not routed anywhere.
Indicates the level of output signal from the variable selector.
12.08 Variable selector 1 source 1
12.09 Variable selector 1 source 2
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
2 1111
Range Pr 0.01 to Pr 21.51
Default Pr 0.00
Update rate Read on drive reset
12.10 Variable selector 1 mode
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range 0 to 9
Default 0
Update rate 21 ms
Mode value
(Pr 12.30)
Action Result
0 Select input 1 output = input1
1 Select input 2 output = input2
2 Add output = input1 + input2
3 Subtract output = input1 - input 2
4 Multiply output = (input1 x input2) / 100.0
5 Divide output = (input1 x 100.0) / input2
6 Time constant output = input1 / ((control param)s + 1)
7 Linear ramp
output = input1 via a ramp with a ramp time of (control param)
seconds from 0 to 100%
8 Modulus output = | input1 |
9 Raise to power
output = input
control param (1 – 3)
output = 0.02: output = input
2
/ 100
output = 0.02: output = input
3
/ 100
2
control has any other value: output = input 1
12.11 Variable selector 1 destination
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 2 1111
Range Pr 1.01 to Pr 21.51
Default Pr 0.00
Update rate Read on drive reset
12.12 Variable selector 1 output
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
11 1 1
Range ±100.0 %
Update rate 21 ms
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