Figure 7-2. Alarms And Trips Screen - Page 2 - Emerson Vilter Vission 20/20 Operation And Service Manual

Section 7 • Alarms and Trips
safety. After a time delay, (setting of the Oil Separator
Temperature Safety Changeover timer), the Low Oil
Separator Start Temperature is bypassed and Low
Oil Separator Run Temperature alarm and safety set-
points become active. The alarm or trip will be acti-
vated if the oil temperature in the separator drops
below the setpoint value.
Low Oil Injection Temperature (Alarm & Trip):
• This is the low oil injection safety. The alarm and
trip setpoints are bypassed at start for a time pe-
riod (setting of the Oil Injection Temperature Safety
Changeover timer). The alarm and trip will be acti-
vated after the time delay has expired.
High Oil Injection Temperature (Alarm & Trip):
• This is the high oil injection temperature safety. The
alarm or trip will be activated if the oil injection tem-
perature rises above the setpoint value.
High Superheat Start Temperature (Trip Only):
• This is the starting high discharge superheat tem-
perature safety. This safety is active when superheat
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9

Figure 7-2. Alarms and Trips Screen - Page 2

monitor is enabled in the confi guration screen. The
compressor is prevented from starting or running if
the superheat is above the setpoint value. The warn-
ing or trip will be activated if the superheat tem-
perature rises above the setpoint value. There is no
ALARM setpoint.
High Superheat Run Temperature (Alarm & Trip):
• This is the running high discharge superheat tem-
perature safety. This safety is active when super-
heat monitor is enabled in the confi guration screen.
After a time delay, (setting of the High Superheat
Temperature Safety Changeover timer), the High
Superheat Start Offset Temperature is bypassed and
High Superheat Run Temperature alarm and safety
setpoints become active. The alarm or trip will be ac-
tivated if the superheat temperature rises above the
setpoint value.
High Superheat Start Offset Temperature (Trip Only):
• This is the starting high discharge superheat tem-
perature safety. This safety is active when super-
heat monitor is enabled in the confi guration screen.
7 – 3