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 11 of 71
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3
PRODUCT OVERVIEW
3.1 Description
The Ampcontrol PF1 is a multi-functional Relay designed for hard rock mining applications. It has the
ability to perform two standard protection functions which are compliant to AS/NZS2081:2011 for Earth
Leakage and Earth Continuity. In addition to these protection functions, the PF1 also provides selectable
control functionality for Pump or Fan motor installations.
The Pump Protection function manages the no-load/under-current condition of a pump by monitoring the
load current. When the load on the pump motor decreases due to the intake pipe not being fully
submerged (known as snoring), the speed of the pump motor will rise to its maximum, which can burn
out the pump motor in as little as 30 seconds. The under-current condition is detected by the PF1 which
can apply a configurable sleep/run cycle to help prevent pump burnout due to a lack of water.
The Fan Protection function manages the gradual pre-inflation of flexible ventilation conduit, by applying
a pulsed (burp) start-up sequence to the fan motor. This can prevent damage to the material of the
ventilation tube during the initial stages of inflation.
The four protection/control functions of the PF1 can be independently enabled or disabled as required.
3.2 Features
The PF1 has the following key features:
Fully configurable using Smart Tools PC software, via USB (external power not required)
Pump Protection (Anti-Snore Mode)
Fan Protection (Burp Mode)
Earth leakage protection (AS/NZS 2081:2011 compliant)
Earth continuity protection (AS/NZS 2081:2011 compliant)
Remote start/stop functionality
Event data logging (10,000 records)
24Vac or 24Vdc operation (one model)
DIN rail mounted
LED status indication to aid in diagnostics
Pluggable screw terminal blocks
3.3 Application
The PF1 is intended for use in the hard rock mining industry on electrical outlets supplying Pump or Fan
motors. When applied correctly, the specialised pump and fan protection functions can significantly
reduce the risk of damage to equipment and thus can also considerably reduce maintenance
requirements.
The PF1’s Pump and Fan operating functions can both be disabled, allowing the PF1 to also operate as
a combined Earth Leakage and Earth Continuity relay on non-pump and non-fan outlets. This has the
added advantage of reducing Relay variants used across a given site (reduced stock, spares,
maintenance and operator training costs).
The following sub-sections provide some typical applications of the PF1.
