Zener MSC-3 - Reference Selection Configuration; Reference Selector Function; User Reference Inputs

IM00120
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IM00120
MSC-3 Instruction Manual
Reference Selector
The reference selector is a multiplexor function that uses three digital inputs to select 1 of 8 reference
sources. The High/Low states of the three digital inputs I16 Selector 1, I17 Selector 2 and
I18 Selector 3 make 8 unique combinations. Each combination is assigned a reference source as given
in the table below:
I16 Selector 1 I17 Selector 2 I18 Selector 3 Selected Reference
Low Low Low F06 USER REF 1
Low Low High F07 USER REF 2
Low High Low F102 Preset 3
Low High High F103 Preset 4
High Low Low F104 Preset 5
High Low High F105 Preset 6
High High Low F106 Preset 7
High High High F107 Preset 8
The diagram below illustrates this feature:
Selected Reference
I16 Selector 1
I18 Selector 3
I17 Selector 2
F06 USER REF 1
F07 USER REF 2
F102 Preset 3
F107 Preset 8
F106 Preset 7
F105 Preset 6
F104 Preset 5
F103 Preset 4
1 of 8
Reference
Selector
User References
There are 2 customisable inputs to the reference selector. They are F06 USER REF 1 and
F07 USER REF 2. Each of these parameters is itself a single reference selection from the list of available
speed reference sources.
Key conguration parameters are:
• F06 USER REF 1 and F07 USER REF 2
• F100 Preset 1 to F107 Preset 8
• I16 Selector 1 to I18 Selector 3 (input terminal selection)
• > REF SELECT (as a speed reference in REMOTE, LOCAL, ESO, etc)