Davey Speedman Dual Pump Variable Speed Pump Control System - Manual (Page 19)

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Set-Pr Actual -Pr number 0 - 9999 0 - 9999 display
Flow-Rate VFD-Sp number 0 - 9999 0 - 100 display
SYSTEM DISPLAY MENUS
FAULT HISTORY
Set Point and Actual Pressure
The Actual Pressure is measured in the discharge pipeline of the system by the
pressure transducer and is displayed on the Speedman Pressure status screen
(Actual-Pr), next to the Pressure Set Point (Set-Pr).
If the jockey pump is running on the main VSD, then the jockey pump set point will appear. This will be
denoted by “JP” alongside the value.
The Pressure Status screen is the Speedman default display. Other messages are displayed when activated;
these include in order of priority: Emergency Stop, Hi Press Shutdown, Lo Press Shutdown, No Flow
Shutdown, VSD Shutdown, New Fault, Lo Flow Detected, Pipe Fill Mode, Pause On JP Run, Pause Activated,
Paused Low Level and High Press Limit.
After 25 minutes from the last key press the Speedman will revert to Pressure Status screen automatically.
Flow Rate & VSD Speed
The Speedman can operate on a calculated flow rate or via a 4-20mA input from a
flow meter or flow meter with a digital output. The Flowrate is displayed in this screen
and will show “*” adjacent to the Flowrate number if the Flowrate is a calculated flow.
If the flow input is determined from a flow meter the flow is displayed without the asterisk.
The estimated flow rate is calculated from information entered into the Pump Flowrate menu. This calculation
automatically compensates for the number of pumps operating and the speed of the VSD pump - it is useful
in determining the system capacity. The estimated flow for the VSD pump is calculated using the pump speed
and mathematical Affinity Laws. This is a calculated flow and must be treated as such. The time base for this
flow is in flow per MINUTES and is not adjustable.
The VSD Speed is displayed as a percentage of maximum speed and is for informational purposes only.
When a system fault is registered a “NEW FAULT” message will appear on the main
screen. It will also be logged in the FAULT HISTORY menu. There is space for 5 faults.
F1 is the most recent fault.
In the event of a new fault which has been automatically reset, the default screen will display the message
“New Fault”. Go to the FAULT HISTORY to view this fault. Faults that are active will remain live on the screen
until the ENTER Key is pressed to clear the fault.
NOTE: When the power has been turned off for any reason, “POWER FAILURE” will be recorded and
displayed. This does not mean the controller is faulty or the system not operating correctly. The
message is intended to alert the operator of an event/issue he otherwise may not be aware of.
Faults will appear in the sub menu in the following format with the time and date
included on the screen.
Set-PR Actual-PR
XXXX
XXXX
Flow-Rate VSD-Sp
XXXXX* XXX%
** NEW FAULT **
F1 Hi PressShut
16/08/08 20:04
F1 message Type/Time/Date AND display
F2 message Hi Press Shutdown, No Flow Shutdown, display
F3 message VSD Fault, Pump 1 - 2 Shutdown, display
F4 message Lo Press Shutdown, High Temperature, display
F5 message Auto Reboot, Power Failure. display