33
operate at. It must be set to a pressure higher than the previously set stop
pressure. The available range is 0 to 2000kPa or 0 to 290 psi. If the high
pressure limit is set to a pressure less than the normal stop pressure an
error message is invoked advising you to check the pressures.
On a rising pressure the E30 will start the high pressure run-on timer as
soon as it detects pressure higher than the normal stop pressure. The high
pressure run-on timer will run for whatever you set it to and expect pressure
to fall back below the normal stop pressure before it times out. It the high
pressure run-on timer times out, it shuts the pump down and reverts to a
normal waiting state. The pump will not then start until pressure falls to
below the set starting pressure. Given pressure falls to below the set stop
pressure before the high pressure run-on timer times out, the pump will
stop and wait for pressure to fall to the set starting pressure.
In effect the high pressure run-on and its associated pressure setting create
a shut down pressure band rather than a single shut down point. The
pump can continue to operate on a low draw off while in this band for a set
period of time using the high pressure run-on timer.
ANTI-CYCLING
Mode
1
Electric motors are often limited in the number of times they can be safely
started in any one hour. This is particularly important in the operation of
submersible bore pumps. When a motor starts there is an initial inrush of
current that produces heat in the coils and iron rotor of the motor. If the
frequency of starts is excessive the accumulation of heat within the motor
can cause severe damage and eventual failure of the motor. Submersible
bore pump motors are particularly prone to damage from excessive cycling
(starting and stopping).
MAXIMUM STARTS PER HOUR
The anti-cycling option built into the E30 allows the user to set the maximum
number of times the pump can be safely started in any one hour period.
If you select yes to this option the screen that follows will ask you to enter
the maximum number of times the pump can be started in any one hour.
The number of starts can be set from 1 start per hour to 1800 starts per
hour. Please contact your pump supplier to obtain the correct
fi
gure for
Summary of Contents for E30
Page 11: ...11 74mm 60mm 4 X 6mm Holes TOP WALL BRACKET DRILL PATTERN...
Page 19: ...19 WIRING DIAGRAMS PLUG PLAY CONNECTIONS CONNECTIONS FOR A SINGLE PHASE PUMP...
Page 20: ...20 LOW VOLTAGE AC SUPPLY WITH REMOTE INPUT CONNECT AN EXTERNAL ALARM...
Page 21: ...21 TWO SINGLE PHASE PUMPS WITH A REMOTE INPUT LOW VOLTAGE DC SUPPLY REMOTE INPUT...
