The Turbo Air® 3000 Centrifugal Compressor Compressor Handbook

The Turbo Air 3000 Centrifugal Compressor Handbook
Control Methods
Vantage offers three distinct load control methods to provide flexibility in meeting widely varying
jobsite compressed air needs.
C—4
· Auto – Offline*
· Auto – Standby*
· Auto – Unload
Each Vantage control method uses all five valve control loops shown Table C—1. Detailed descriptions
of these methods appear latter in this Appendix.
*Note: Both the Auto-Offline and Auto-Standby mode require a modulating blow off
discharge valve.
Load Control Loops
The Vantage control system performs load control through five independent control loops. Each loop
modulates either the inlet valve or the discharge valve, also called the Modulating Blow Off Valve or
MBOV
Inlet Valve Control Discharge Valve Control
Control loop Setpoint Control loop Setpoint
Maximum Power Maximum Motor Load Blow-Off System System Pressure
Pressure Offset
System Pressure System Pressure Blow-Off Discharge Max. Discharge
Pressure Pressure
Minimum Flow Surge Control Offset
A description of the setpoints follows.
Table C—1 Vantage Control Loops and their Setpoints