Emerson Vilter MicroVission - Microvission Safety Messages; Low Suction Pressure; High Discharge Pressure; Low Process Temperature

6 – 4
Section 6 • Alarms and Trips
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
MicroVission Safety Messages
The following table lists all possible Warning, Inhibit,
Alarm and Trip Messages generated by MicroVission
while monitoring safety parameters.
Warnings Inhibits Alarms Trips
Not Running (Idle) Pre-Start Running Running
Low Suction Pressure:
Below Messages will be displayed on Main screen when Suction Pressure value drops below congured setpoints.
Refer Figure 6- 1 for Alarm & Trip setpoints.
There are two different set of Alarm & Trip setpoints which will be active depending on Active Control Mode selected
from Compressor Control screen.
Low Suction Pressure
Warning
Low Suction Pressure Inhibit
Low Suction Pressure
Alarm
Low Suction Pressure
Trip
Suction Pressure <= Low
Suction Pressure Alarm
Setpoint 1 / Setpoint 2
Suction Pressure <= Low Suction
Pressure Alarm Setpoint 1 /
Setpoint 2
Suction Pressure <=
Low Suction Pressure
Alarm Setpoint 1 /
Setpoint 2
Suction Pressure <= Low
Suction Pressure Alarm
Setpoint 1 / Setpoint 2
High Discharge Pressure:
Below Messages will be displayed on Main Screen when Discharge Pressure value rises above congured setpoints.
Refer Figure 6- 1 for Alarm & Trip setpoints.
There are two different set of Alarm & Trip setpoints which will be active depending on Active Control Mode selected
from Compressor Control screen.
High Discharge Pressure
Warning
High Discharge Pressure Inhibit
High Discharge
Pressure Alarm
High Discharge Pressure
Trip
Discharge Pressure >=
High Discharge Pressure
Alarm Setpoint 1 /
Setpoint 2
Discharge Pressure >= High
Discharge Pressure Alarm
Setpoint 1 / Setpoint 2
Discharge Pressure
>= High Discharge
Pressure Alarm
Setpoint 1 / Setpoint 2
Discharge Pressure >=
High Discharge Pressure
Trip Setpoint 1 / Setpoint
2
Low Process Temperature:
Below Messages will be displayed on Main Screen when Process Temperature value drops below congured set-
points. Refer Figure 6- 1 for Alarm & Trip setpoints.
There are two different set of Alarm & Trip setpoints which will be active depending on Active Control Mode selected
from Compressor Control screen.
These safeties will be only active when Active Control Mode selected from Compressor Control screen is “Process
Temperature SP1” or “Process Temperature SP2”.
Low Process
Temperature Warning
Low Process Temperature Inhibit
Low Process
Temperature Alarm
Low Process
Temperature Trip
Process Temperature
<= Low Process
Temperature Alarm
Setpoint 1 / Setpoint 2
Process Temperature <= Low
Process Temperature Alarm
Setpoint 1 / Setpoint 2
Process Temperature
<= Low Process
Temperature Alarm
Setpoint 1 / Setpoint 2
Process Temperature
<= Low Process
Temperature Trip
Setpoint 1 / Setpoint 2