Microvission Safety Messages; Low Suction Pressure; High Discharge Pressure; Low Process Temperature - Emerson VILTER MicroVission Operation And Service Manual

Section 6 • Alarms and Trips

MicroVission Safety Messages

The following table lists all possible Warning, Inhibit,
Alarm and Trip Messages generated by MicroVission
while monitoring safety parameters.
Warnings
Not Running (Idle)

Low Suction Pressure:

Below Messages will be displayed on Main screen when Suction Pressure value drops below configured 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
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 configured 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
Discharge Pressure >=
High Discharge Pressure
Alarm Setpoint 1 /
Setpoint 2

Low Process Temperature:

Below Messages will be displayed on Main Screen when Process Temperature value drops below configured 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
Process Temperature
<= Low Process
Temperature Alarm
Setpoint 1 / Setpoint 2
6 – 4
Inhibits
Pre-Start
Low Suction Pressure Inhibit
Suction Pressure <= Low Suction
Pressure Alarm Setpoint 1 /
Setpoint 2
High Discharge Pressure Inhibit
Discharge Pressure >= High
Discharge Pressure Alarm
Setpoint 1 / Setpoint 2
Low Process Temperature Inhibit
Process Temperature <= Low
Process Temperature Alarm
Setpoint 1 / Setpoint 2
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
Alarms
Running
Low Suction Pressure
Alarm
Suction Pressure <=
Low Suction Pressure
Alarm Setpoint 1 /
Setpoint 2
High Discharge
Pressure Alarm
Discharge Pressure
>= High Discharge
Pressure Alarm
Setpoint 1 / Setpoint 2
Low Process
Temperature Alarm
Process Temperature
<= Low Process
Temperature Alarm
Setpoint 1 / Setpoint 2
Trips
Running
Low Suction Pressure
Trip
Suction Pressure <= Low
Suction Pressure Alarm
Setpoint 1 / Setpoint 2
High Discharge Pressure
Trip
Discharge Pressure >=
High Discharge Pressure
Trip Setpoint 1 / Setpoint
2
Low Process
Temperature Trip
Process Temperature
<= Low Process
Temperature Trip
Setpoint 1 / Setpoint 2