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Single Phase, Single Pump Controller - SM96

General
Description:
The
SM96 Pump Controller has been designed specifically to cater for
distributed
sewage pumping systems. It is used where
a building or dwelling has its own sewage & waste water storage
tank that must be periodically emptied into a pipe network
at a high positive pressure. These distributed sewage systems
are
used where terrain is unsuitable for simple gravity fed outlets.
Where dwellings are close to the water table or on rocky, undulating
land, these domestic pumping systems can greatly reduce the
costs of connecting a building to a public sewage network. The SM96 pump controller is a compact wall mounted unit which will manage
the operation of a pump motor integral to a domestic waste water collection
tank. Three probes within the tank will inform the controller when the tank
has been pumped dry, when a tank is in danger of overflowing, or when a
normal pump cycle needs to be initiated. The probes may be either submersible
float switches or conductive probes set to different levels within the tank.
A number of alarm conditions will be declared and recorded where normal
operating parameters have been exceeded.
The controller has been independently laboratory tested and is fully compliant
with Australian AS3100 electrical safety standards (CS03057V) and with the
new Electromagnetic Compatibility, EMC standards. (C-tick no. N12656)
The SM96 unit features an advanced microprocessor controller bonded to the
backplane within the enclosure. Heavy contactors and current overload devices
support single phase 240VAC pumps with Start/Run motor windings and an average
load current of up to 15 Amps. An integral Residual Current Device (RCD) ensures
protection against earth leakage faults.
Where the pump motor requires a separate high current starter circuit, an approved ‘Starter
Module’ may be fitted to the SM96 backplane. (shown below)
A perspex barrier behind the cabinet door separates all internal wiring
from the user console. This allows routine pump maintenance to be carried
out without the presence of electrical staff. (Installation and maintenance
of all electrical components will still require the presence of a qualified
electrical contractor.)
The cabinet is an extremely tough moulded polyester composition, with
stainless steel hinge and latches and foam door seals. Stainless Steel door
latches will accept padlocks . The cabinet is intended to be wall mounted
with brackets provided and cable access may be effected from all sides or
rear.
Other Features
Should
tank levels become too high or too low, audible and visual alarms will
be triggered
for the duration of the fault. A single or double flash
will indicate the fault type. The audible alarm may be suppressed
for 6 hours by briefly pressing an ‘Alarm ‘Mute button on the underside
of the cabinet. Motor operation is inhibited with ‘Tank Low’ alarms.
A third alarm condition will indicate the accidental reversal of the ‘High’ and ‘Low’ probes
by installation staff.
A ‘Motor Jog’ button
inside the cabinet will force the pump to operate for a brief
period. (This feature is inhibited if tank levels
are low)
An electromechanical hour-meter (resettable) indicates total pump activity.
The cabinet size is 360mm high, 310mm wide and 160mm deep. Unit weight
is 7.5 Kg
A full electronic ‘Data Logging’ system
is standard with each controller. It records pump cycles, hours
of operation, alarm conditions
both as running totals and within 4 hour blocks over the last 24
hours. A counter also indicates the number of hours since the
last power interruption.
Data is extracted from the unit by bringing a standard PC with
a special terminal program near the controller. When the ‘Send Data’ button
is pressed, the entire data log contents are sent to the PC by
an infrared signal broadcast through the protective perspex barrier.
The log data is
stored indefinitely in a special memory which requires no backup
battery.
The retrieved information may be saved within the PC in a simple ‘Microsoft
Access’ format for later analysis. ( The infrared receiver probe and
software package are available as separate product, ‘SM96 TERM’.)
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