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Menu 1 – Compressor Staging/PID
Compressor Staging Setup Screen
Figure 41 – Compressor Staging Setup Screen
Table 28 – Compressor Staging Setup Parameters
Menu Item
Description
Default
Value
Staging Mode
In Auto Mode, the control system adjusts the number of staged compressors
relative to the demand and available compressors. In manual mode, the number of
staged compressors depends on the Manual Mode Value relative to available
compressors.
AUTOMATIC
Stage to Stage Delay
This is the minimum delay duration between stages on multiple compressors. This
time delay temporarily halts the demand percent from calculating allowing the
newly staged compressor to properly influence the system.
60
Kp
Proportional PID value
3
Ti
Integral PID value
1000
Td
Derivative PID value
0
Destage
ΔT
This is the differential below set point the current process value is allowed to go to
before staging off all the compressors.
5°F {-15°C}
Touching the Graph button will display the Staging Graph Screen as shown in Figure 42. Touching the local
staging button will display the Compressor Staging Local Screen as shown in Figure 43.