Section 7 • Alarms And Trips Overview; Warnings; Inhibits - Emerson Vilter Vission 20/20 Operation And Service Manual

Section 7 • Alarms and Trips
Overview
The Alarms and Trips screen allows the operator to view
and adjust settings for compressor safety and alarm
settings.

Warnings

The Vission 20/20 uses Warnings as a way to notify the
operator of parameters that may inhibit the compres-
sor when started. Warnings are monitored only when
compressor is not running. Unless otherwise specified,
Warnings use alarm setpoints for detection and mes-
sage generation.
All warning messages present can be seen collectively
in a pop-up window. This pop-up is displayed when a
warning condition is present and the bottom status bar
used for displaying warnings is pressed.
Warnings are always displayed as an orange
banner on the bottom status bar.
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Figure 7-1 - Typical Status Banner Message Display

Inhibits

The Vission 20/20 uses several start Inhibits to prevent
the compressor from starting to protect the compres-
sor and the refrigeration system. Inhibits are only active
during Pre-Start condition. While starting the compres-
sor, the Inhibits are checked first before the oil pump
is started or the motor is started. Failed starts due to
an Inhibit do not count toward any of the anti-recycle
timers including hot starts. Unless otherwise specified,
Inhibits use Alarm Setpoints to trigger an aborted start
and message.
Inhibits are always displayed as a red banner.
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