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51
Anti-Cycle Timer
The
A
NTI
-C
YCLE
T
IMER
is used to avoid repeated start attempts within a user programmable period of
time. The Anti-Cycle timer is started with the motor and must completely count down before the motor
can be started again. The duration of the Anti-Cycle timer can be adjusted from the Miscellaneous
Controls.
Power Fail Restart
The operator can define a
P
OWER
F
AIL
R
ESTART
time from the miscellaneous controls screen. If the
Viltech
is reset manually or due to a loss of power the down time is calculated and compared to this
setpoint. If power was off longer than the power fail restart time a failure is reported. If the power loss
was less than the setpoint no failure is reported and the compressor remains on-line and is allowed to
automatically restart if required.
Process Temperature Control (Option)
When the
P
ROCESS
T
EMPERATURE
option is enabled, the RECIP compressor capacity is adjusted to
maintain the outlet temperature of a product or process instead of suction pressure
(e.g. chiller outlet temperature control). The control strategy is documented in the Capacity Control
section above.
Two Stage Configuration (Option)
In a
T
WO
S
TAGE
C
ONFIGURATION
, an intermediate pressure and temperature sensor are monitored. High Failure,
High Alarm, Low Alarm and Low Failure setpoints are provided for each.
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