Emerson VILTER MicroVission Operation And Service Manual page 90

Section 7 • Timers
Low Crankcase Oil Temperature Changeover
This is the time for which the "Low Crankcase Oil
Temperature – Start" safety setpoints will remain ac-
tive. After the timer has expired, the "Low Crankcase
Oil Temperature – Start" safety setpoints will become
inactive and the "Low Crankcase Oil Temperature – Run"
safety setpoints will become active.
High Discharge Temperature Bypass
This is the time for which the "High Discharge
Temperature" safety setpoints will remain inactive. After
the timer has expired, the "High Discharge Temperature"
safety setpoints will become active and safeties related
to "High Discharge Temperature" will get monitored.
High Filter Diff. Pressure Changeover
This is the time for which the "High Filter Diff. Pressure –
Start" safety setpoints will remain active. After the timer
has expired, the "High Filter Diff. Pressure – Start" safety
setpoints will become inactive and the "High Filter Diff.
Pressure – Run" safety setpoints will become active.
7 – 2
High Motor Amps Bypass
Starting motors can typically pull much more than cur-
rent than its rated full load amps for a short time. This
timer ignores that sudden inrush of current for the speci-
fied time.
Communication Failure Detect Timer
This timer forces the compressor to wait for the set time
before displaying "Remote Comm Timeout" Alarm or
"Remote Comm Time-out" Trip when there is no remote
communication to MicroVission for the configured time.
Restart on Power Failure Timer
This timer forces the compressor to wait for the set time
period after a power failure before it starts automatically
in Auto mode. By staggering the time settings of this
timer between other compressor panels, the compres-
sors can be allowed to start automatically, one at a time,
after a power failure. This will prevent excessive load
demand on the power system that could occur if all the
compressor equipment were to start at the same time.
This timer will be accessible and functional only when
"Timed" is configured in Restart on Power Failure in con-
figuration screen.
Figure 7-2. Timers Screen (Page 2)
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3