Emerson 4401 - Variable selector 1 mode; Variable selector 1 destination

Introduction
Parameter
x.00
Parameter
description format
Keypad and
display
Serial
communications
CT Modbus
RTU
PLC Ladder
programming
CTSoft Menu 0
Advanced parameter
descriptions
Menu 12
Commander SK Advanced User Guide 157
Issue Number: 9 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 be bit
variables or non bit variables. If programming a reference to a variable source select, if the reference is a whole number, then the variable source
treats the whole number as a percentage, e.g. 5.0Hz = 10% of reference.
The output of the variable select can be changed by the mode as in the following table:
Defines the destination parameter for the variable selector 1 output. 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 0.00 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 12.10)
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 = input1
control param (0.01 - 0.03)
control = 0.02: output = input1
2
/ 100
control = 0.03: output = input1
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 0.00 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