Davey Speedman Dual Pump Variable Speed Pump Control System - Manual (Page 49)

49
PUMP PROTECTION
The Speedman has numerous safety features built into the system to protect the pumps from damage. Some
of these shut down all operations and some are designed to halt operations until the system can stabilise. The
user determines the selection of each of these.
Description Screen Message Action
High Pressure
Shutdown
HiPress Shutdown Shutdown - Restart Automatically or Manually
Low Pressure
Shutdown
LoPress Shutdown Shutdown - Manual restart
No Flow Shutdown Low Flow Detected
No Flow Shutdown
On first detecting a “No Flow Input”
Shutdown - Manual Restart
Emergency Stop Emergency Stop Halts the system until contacts opened again
Individual Pump
Protection (Pause)
P X Protection Pump 1-2 Halted until fault is removed
Individual Pump
Fault (Stop)
P X Fault Pump 1-2 Shutdown, requires operator reset
High Pressure Shutdown
If the system pressure exceeds the High Pressure Shutdown setting for a period of time set by the High
Pressure Delay, the Speedman will shutdown the system until manually reset. The pressure reached will stay
on the display until the fault is reset.
There is the option to allow a number of automatic restarts after this shutdown.
There are 0-250 restarts possible and are set in the “High Pressure Restarts” screen within the TUNING menu.
Low Pressure Shutdown
If the system drops under the specified Low Pressure Shutdown setting for a period of time set by the Low
Pressure Delay the Speedman will shutdown the system until manually reset. Retries are not available for this
Fault.
Individual Pump Protection - P 1-2 Prot(Pause)
The Speedman has inputs for each pump to allow for individual pump protection. In the event of a pump going
into a fault condition the input for that pump should close. This will halt the pump after the time set by the Input
Delay Timer.
The pump will automatically restart when the Input contact is opened.
This protection is ideal for the following pump protection sensors:
•
Temperature probes
• Thermal Overload
• Thermistor relays
Individual No flow Pump Protection P 1-2 Fault(Stop)
Speedman has inputs for each pump to allow for individual No Flow pump protection. In the event of a pump
going into a fault condition the input for that pump should close. This will shut down the pump after the time set
by the No Flow Delay Timer.
The pump will NOT automatically restart when this event occurs.
This protection is ideal for the following pump protection sensors:
•
Temperature probes
• Loss of prime flow switches
• Thermal Overload
• Thermistor
ALL FAULTS CAN BE REMOTELY RESET FROM THE “RESET INPUT”