Ampcontrol Pty Ltd
– ABN 28 000 915 542
PF1 USER MANUAL
MAG-165 Version 6
– March/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 28 of 71
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6.1 Pump Sleep Mode (Anti-Snore Mode)
When the water being pumped, drops below the level of the
pump’s intake pipe, a mixture of air and
water is sucked into the pump. This sound that is produced when this occurs is known as snoring. As the
ratio of air to water increases, the load on the pump motor decreases. An insufficiently loaded pump will
run at the maximum rotor speed, potentially burning out the pump motor in as little as 30 seconds.
The PF1 r
elay’s Pump Sleep Mode (Anti-Snore Mode) provides protection against damage by initiating a
sleep state when the outlet current falls below a set level (iSet value). After a user defined time period
(determined by the sleep cycle settings), the PF1 will
‘wake’ the outlet to check if the intake pipe has
been fully submerged again. If the pump is still under-loaded, another sleep cycle will begin.
The PF1 monitors the outlet current via the supplied current transformer that is installed on one of the
outlet phase conductors, and connected to the PF1 via the PF S1 terminal (32) and PF S2 terminal (33).
NOTE
The S1 and S2 terminals of the current transformer are interchangeable
without affecting the operation of the PF1.
Sleep Modes
Pump Sleep mode can be configured to three states: “Off”, “Incremental” and “Fixed”. The Pump Sleep
Mode can be selected using the Smart Tools software.
Table 6: Pump Sleep Mode Selection
Pump Sleep Mode
Description of Operation
Off
Deactivates Sleep Mode. Pump control will now be strictly
manual, via the local or remote pushbuttons and/or via a float
switch setup.
Incremental
In Incremental Sleep Mode each time that the PF1 enters a
consecutive sleep cycle, the sleep time will increase. If water
is present when the pump wakes up, the sleep time will reset
back to its initial value.
Fixed
In Fixed Sleep Mode each time that the PF1 enters a sleep
cycle, the sleep time will be a fixed value.
Setting the Pump Sleep Mode to either “Incremental” or “Fixed” mode will enable the PF1 Relay’s sleep
function. The terms “incremental” and “fixed” refer to the length of time that the relay remains in the
sleep state each time that an undercurrent event occurs.
In Fixed Mode the length of time that the PF1 will operate in sleep mode remains constant regardless
of the number of times that it consecutively enters a sleep state.
In Incremental Mode the length of time that the pump will remain in the sleep state will increase each
time the PF1 initiates consecutive sleep states.
