Emerson Vilter Vission 20/20 Operation And Service Manual page 90

Section 7 • Alarms and Trips
Warnings
Not Running (Idle)
Process Temperature
This option is only available for Process Temperature Control mode, selected in the Control Mode dropdown
selection found in the Compressor Control screen.
High Process Temperature (Process Temperature)
See Figure 7-2.
Low Process Temperature (Process Temperature)
See Figure 7-2.
Low Process Temp
Warning
Process Temperature <
Low Process Temperature
Alarm Setpoint #1 or #2
Compressor started in Remote Mode (Remote Comm Time-Out)
Low Run Pressure Ratio (Run Pressure Ratio)
This safety is active when Cool Compression is enabled in the configuration screen.
These Setpoints will be active if the pressure ratio drops below the setpoint values after the Low Pressure Ratio
Bypass timer has expired.
See Figure 7-9.
7 – 18
Inhibits
Pre-Start
Low Process Temp Inhibit
Process Temperature <
Low Process Temperature
Alarm Setpoint #1 or #2
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Alarms
Running
High Process Temp Alarm
Process Temperature >
High Process Temperature
Alarm Setpoint #1 or #2
Low Process Temp Alarm
Process Temperature <
Low Process Temperature
Alarm Setpoint #1 or #2
Remote Comm Time-Out
Alarm
Remote Comm Inactive
Time > Communication
Failure Detect Timer
Low Run Pressure Ratio
Alarm
Run Pressure Ratio < Low
Run Pressure Ratio Alarm
Trips
Running
Low Process Temp Trip
Process Temperature <
Low Process Temperature
Trip Setpoint #1 or #2
Remote Comm Time-Out
Trip
Remote Comm Inactive
Time > Communication
Failure Detect Timer
Remote Comm Time-Out
On a Communication
Failure, is configured as
Stop Compressor with Trip
Low Run Pressure Ratio
Trip
Run Pressure Ratio < Low
Run Pressure Ratio Trip