Emerson E300 Series - Page 378

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378 E300 Design Guide
Issue Number: 1
See Threshold Detector 1 Output (K23).
See Threshold Detector 1 Output (K23).
See Variable Selector 1 Source 1 (K30).
The variable selector functions are always active even if the source and destination are not routed to valid parameters. If a source is not a valid
parameter then the source value is taken as 0. The update rate for each of the variable selector functions is always 4 ms.
The following description is for variable selector 1, but variable selector 2 operates in the same way. The source parameters selected with Variable
Selector 1 Source 1 (K30) and Variable Selector 1 Source 2 (K31) are converted to a percentage value, scaled with Variable Selector 1 Source 1
Scaling (K34) and Variable Selector 1 Source 2 Scaling (K35) respectively and then combined with a function defined by Variable Selector 1 Mode
(K32) to give Variable Selector 1 Output (K29) as a percentage value. If Variable Selector 1 Enable (K37) = 1 then the function operates normally. If
Variable Selector 1 Enable (K37) = 0 then Variable Selector 1 Output (K29) = 0.00% and any states within the function are reset (i.e. the time
constant function accumulator is held at zero). If the value of Variable Selector 1 Mode (K32) is changed then all internal function state are also reset.
K27 Threshold Detector 1 Output Invert
Mode Open-Loop, RFC-A, RFC-S
Minimum 0 Maximum 1
Default 0 Units
Type 1 Bit User Save Update Rate 4 ms read
Display Format Standard Decimal Places 0
Coding RW
K28 Threshold Detector 1 Destination
Mode Open-Loop, RFC-A, RFC-S
Minimum A00 Maximum AB99
Default A00 Units
Type 16 Bit User Save Update Rate Drive reset read
Display Format Menu Param Alpha Numeric Decimal Places 3
Coding RW, DE, PT, BU
K29 Variable Selector 1 Output
Mode Open-Loop, RFC-A, RFC-S
Minimum -100.00 Maximum 100.00
Default Units %
Type 16 Bit Volatile Update Rate 4 ms read
Display Format Standard Decimal Places 2
Coding RO, ND, NC, PT
K30 Variable Selector 1 Source 1
Mode Open-Loop, RFC-A, RFC-S
Minimum A00 Maximum AB99
Default A00 Units
Type 16 Bit User Save Update Rate Drive reset read
Display Format Menu Param Alpha Numeric Decimal Places 3
Coding RW, PT, BU