Watlow 8LS Controller Manuel d'utilisateur Page 130

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122 8LS Users Guide
Appendix C: 8LS Cascade
Choosing the Primary Loop
Use this selection to choose the primary loop for cascade control. This
loop provides the output for the Secondary loop, which is the current
loop as it appears on the upper line of the display.
Setting the High End of the Secondary Setpoint
Use this selection to set the high end of the secondary loop setpoint.
This setting determines the high end setpoint of the Secondary loop (in
this case loop 2) when the Primary loops output reaches 100%.
Selectable Range:
The range of the input type selected on the
secondary loop.
Setting the Low End of the Secondary Setpoint
Use this menu to set the low end of the secondary loops setpoint.
This setting determines the low end setpoint of the Secondary loop (in
this case loop 2) when the Primary loops ouput reaches 0%.
Selectable Range:
The range of the input type selected on the
secondary loop.
1234 56 78
LOOP PROCESS UNITS
ALARM
SETPOINT STATUS OUTPUT%
1 SP?
OUTPUT 2
Current loop
Also the
Secondary loop.
Primary loop. This
loops output will
be the setpoint for
the current loop.
1234 56 78
LOOP PROCESS UNITS
ALARM
SETPOINT
STATUS
OUTPUT%
2 100% ?
100 °F
1234 56 78
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUTPUT%
2 0% ?
0 °F
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